{"id":14935,"date":"2026-11-02T11:14:18","date_gmt":"2026-11-02T10:14:18","guid":{"rendered":"https:\/\/geopard.tech\/?page_id=14935"},"modified":"2026-11-02T12:38:24","modified_gmt":"2026-11-02T11:38:24","slug":"soil-sampling-regulations","status":"publish","type":"page","link":"https:\/\/geopard.tech\/nor\/soil-sampling-regulations\/","title":{"rendered":"Soil Sampling Regulations by Country"},"content":{"rendered":"\n<div class=\"gp-ssr\" id=\"gp-ssr\" data-theme=\"light\">\n<style>\n\/* ===== theme chrome (rule 7). Header + footer kept; only the duplicate WP page\n   title (a bare h1 in #simple_page > .container) is hidden. 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var(--mute);background:var(--panel);color:var(--ink);border-radius:var(--r-ctl);font-size:.95rem;font-weight:700}\n.gp-ssr .ssr-ftoggle[aria-expanded=\"true\"]{background:var(--accent);border-color:var(--accent);color:#fff}\n.gp-ssr .ssr-ctl{display:flex;flex-wrap:wrap;align-items:center;gap:8px 16px}\n.gp-ssr .ssr-ctl + .ssr-ctl{margin-top:10px;padding-top:10px;border-top:1px solid var(--hair)}\n.gp-ssr .ssr-ctl-lab{flex:0 0 auto;width:84px;font-size:.72rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--accent-mid)}\n.gp-ssr .ssr-chips{display:flex;flex-wrap:wrap;gap:6px;flex:1 1 auto;min-width:0}\n.gp-ssr .ssr-chip{display:inline-flex;align-items:center;min-height:36px;padding:0 12px;border:1px solid var(--mute);background:var(--panel);color:var(--ink);border-radius:var(--r-ctl);font-size:.9rem;font-weight:400}\n.gp-ssr .ssr-chip:hover{border-color:var(--accent-soft);color:var(--accent-mid)}\n.gp-ssr 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var(--accent-soft);outline-offset:1px;border-color:var(--accent-soft)}\n.gp-ssr .ssr-count{font-size:.92rem;color:var(--dim)}\n.gp-ssr .ssr-count b{color:var(--ink);font-weight:700}\n.gp-ssr .ssr-reset{min-height:36px;padding:0 12px;border:1px solid var(--line);background:var(--paper2);color:var(--ink2);border-radius:var(--r-ctl);font-size:.88rem}\n.gp-ssr .ssr-reset:hover{border-color:var(--accent-soft);color:var(--accent-mid)}\n\n\/* ---- the table: real rows in the page HTML; cards on phones from the same DOM ---- *\/\n.gp-ssr .ssr-scroll{margin-top:16px;overflow-x:auto;-webkit-overflow-scrolling:touch;background:var(--panel);border:1px solid var(--line);border-radius:var(--r-panel)}\n.gp-ssr .ssr-table{width:100%;min-width:1000px;border-collapse:collapse;font-size:.9rem;line-height:1.45;color:var(--ink2)}\n.gp-ssr .ssr-table caption{text-align:left;padding:14px 16px 4px;font-size:.84rem;color:var(--dim);caption-side:top}\n.gp-ssr .ssr-table th,.gp-ssr .ssr-table td{text-align:left;vertical-align:top;padding:12px 12px;border:0}\n.gp-ssr .ssr-table thead th{font-size:.72rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--accent-mid);background:var(--wash);border-bottom:1px solid var(--line);white-space:nowrap}\n.gp-ssr .ssr-table .c-place{width:10%} .gp-ssr .ssr-table .c-pur{width:14%} .gp-ssr .ssr-table .c-time{width:16%}\n.gp-ssr .ssr-table .c-area{width:13%} .gp-ssr .ssr-table .c-meth{width:14%} .gp-ssr .ssr-table .c-depth{width:9%}\n.gp-ssr .ssr-table .c-cores{width:9%} .gp-ssr .ssr-table .c-stat{width:15%}\n.gp-ssr .ssr-rec + .ssr-rec .ssr-main > *{border-top:1px solid var(--line)}\n.gp-ssr .ssr-main th{font-weight:400}\n.gp-ssr .ssr-grp th{padding:10px 12px;background:var(--paper2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);font-size:1.02rem;font-weight:700;color:var(--ink);letter-spacing:-.01em}\n.gp-ssr .ssr-place{display:block;font-size:1rem;font-weight:700;color:var(--ink)}\n.gp-ssr 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var(--line);border-radius:var(--r-ctl);background:var(--paper2);color:var(--accent-mid);font-size:.86rem;font-weight:700;cursor:pointer;list-style:none}\n.gp-ssr .ssr-more summary::-webkit-details-marker{display:none}\n.gp-ssr .ssr-more summary::before{content:\"+\";display:inline-block;width:1.3em;text-indent:0;font-weight:700}\n.gp-ssr .ssr-more details[open] summary::before{content:\"\\2212\"}\n.gp-ssr .ssr-more summary:focus-visible{outline:2px solid var(--accent-soft);outline-offset:2px}\n.gp-ssr .ssr-det{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1.6fr) minmax(0,1fr);gap:16px;margin-top:12px;padding:16px;background:var(--wash);border:1px solid var(--hair);border-radius:var(--r-card)}\n.gp-ssr .ssr-det h3{font-size:1rem;margin:0 0 10px}\n.gp-ssr .ssr-det h4{font-size:.72rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--accent-mid);margin:12px 0 6px}\n.gp-ssr .ssr-det h4:first-of-type{margin-top:0}\n.gp-ssr .ssr-facts{margin:0}\n.gp-ssr 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auto;min-width:0;min-height:40px;padding:0 12px;border:1px solid var(--mute);border-radius:var(--r-ctl);font-family:var(--f);font-size:1rem;color:var(--ink);background:var(--panel)}\n.gp-ssr .ssr-est-area input:focus{outline:2px solid var(--accent-soft);outline-offset:1px}\n.gp-ssr .ssr-units{display:flex;gap:4px}\n.gp-ssr .ssr-unit{min-height:40px;padding:0 12px;border:1px solid var(--mute);background:var(--panel);color:var(--ink);border-radius:var(--r-ctl);font-size:.92rem;font-weight:400}\n.gp-ssr .ssr-unit[aria-pressed=\"true\"]{background:var(--accent);border-color:var(--accent);color:#fff}\n.gp-ssr .ssr-unit:focus-visible{outline:2px solid var(--accent-soft);outline-offset:2px}\n.gp-ssr .ssr-est-err{margin-top:8px;color:var(--amber);font-size:.9rem}\n.gp-ssr .ssr-est-figs{display:grid;grid-template-columns:1fr 1fr;gap:10px}\n.gp-ssr .ssr-est-fig{background:var(--panel);border:1px solid var(--hair);border-radius:var(--r-card);padding:12px 14px}\n.gp-ssr .ssr-est-fig .k{display:block;font-size:.72rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--accent-mid)}\n.gp-ssr .ssr-est-fig .v{display:block;margin-top:4px;font-size:clamp(1.7rem,2.6vw,2.2rem);font-weight:700;letter-spacing:-.03em;line-height:1;color:var(--accent)}\n.gp-ssr .ssr-est-fig .v.ssr-ns{font-size:1rem;letter-spacing:0;color:var(--faint);font-weight:400}\n.gp-ssr .ssr-est-fig .n{display:block;margin-top:6px;font-size:.82rem;color:var(--dim);line-height:1.35}\n.gp-ssr .ssr-est-facts{margin-top:14px;padding:12px 14px;background:var(--panel);border:1px solid var(--hair);border-radius:var(--r-card)}\n.gp-ssr .ssr-est-note{margin-top:10px;font-size:.88rem;color:var(--dim)}\n.gp-ssr .ssr-est-links{display:flex;flex-wrap:wrap;gap:6px 18px;margin-top:10px;font-size:.92rem}\n.gp-ssr .ssr-est-cta{justify-content:flex-start;margin-top:16px}\n\n\/* ---- featured differences ---- *\/\n.gp-ssr 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nothing is dropped *\/\n  .gp-ssr .ssr-scroll{overflow:visible;background:transparent;border:0;border-radius:0}\n  .gp-ssr .ssr-table{min-width:0;display:block}\n  .gp-ssr .ssr-table caption{display:block;padding:0 0 10px}\n  .gp-ssr .ssr-table thead{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}\n  .gp-ssr .ssr-table tbody.ssr-rec{display:block;margin-bottom:12px;background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card)}\n  .gp-ssr .ssr-table tr{display:block}\n  .gp-ssr .ssr-table th,.gp-ssr .ssr-table td{display:block;width:auto;padding:10px 14px;border-top:1px solid var(--hair)}\n  .gp-ssr .ssr-rec + .ssr-rec .ssr-main > *{border-top:1px solid var(--hair)}\n  .gp-ssr .ssr-main th{border-top:0;background:var(--wash);border-radius:var(--r-card) var(--r-card) 0 0}\n  .gp-ssr .ssr-main td::before{content:attr(data-label);display:block;margin-bottom:3px;font-size:.72rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--accent-mid)}\n  .gp-ssr .ssr-more td{padding:10px 14px 14px}\n  .gp-ssr .ssr-det{grid-template-columns:1fr;padding:12px}\n  .gp-ssr .ssr-det .ssr-wording{order:0}\n}\n@media (max-width:480px){\n  \/* the key folds to compact rows so the first record stays near the fold *\/\n  .gp-ssr .ssr-key{grid-template-columns:1fr;gap:0;background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card)}\n  .gp-ssr .ssr-key div{border:0;border-radius:0;padding:8px 12px}\n  .gp-ssr .ssr-key div + div{border-top:1px solid var(--hair)}\n  .gp-ssr .ssr-key dt{margin:0 0 2px}\n  .gp-ssr .ssr-hero h1{font-size:clamp(1.9rem,8.4vw,2.3rem)}\n}\n\/* ---- widescreen (rule 13) ---- *\/\n@media (min-width:1200px){\n  .gp-ssr .ssr-steps{grid-template-columns:repeat(4,minmax(0,1fr))}\n  .gp-ssr .ssr-proof{grid-template-columns:repeat(4,minmax(0,1fr))}\n  .gp-ssr .ssr-prod{grid-template-columns:minmax(0,1fr) minmax(0,1fr);padding:36px}\n  .gp-ssr .ssr-meth{grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);align-items:start}\n  .gp-ssr .ssr-table{font-size:.92rem}\n}\n@media (prefers-reduced-motion:reduce){\n  .gp-ssr *{animation:none !important;transition:none !important;scroll-behavior:auto !important}\n}\n<\/style>\n\n<div class=\"ssr-hero\">\n  <span class=\"ssr-kicker\">Soil sampling reference<\/span>\n  <h1>Soil sampling regulations and guidelines by country<\/h1>\n  <p class=\"ssr-lede\">How often to test, how many hectares one sample may cover, which pattern, how deep and how many cores, as the law or official guidance sets them in each country, with the official text behind every value.<\/p>\n  <div class=\"ssr-hero-btns\">\n    <a class=\"ssr-btn\" href=\"#ssr-rules\">Explore country requirements<\/a>\n    <a class=\"ssr-btn-ghost\" id=\"ssr-cta-hero\" href=\"https:\/\/app.geopard.tech\/auth\/sign-up?utm_source=geopard.tech&amp;utm_medium=lead-magnet&amp;utm_campaign=soil-sampling-regulations&amp;utm_content=hero\">Create a sampling plan<\/a>\n  <\/div>\n  <div class=\"ssr-feats\">\n    <span class=\"ssr-feat\"><span class=\"mk\">&#10003;<\/span>The official wording behind every value<\/span>\n    <span class=\"ssr-feat\"><span class=\"mk\">&#10003;<\/span>Law and guidance marked apart<\/span>\n    <span class=\"ssr-feat\"><span class=\"mk\">&#10003;<\/span>Sources re-checked every two months<\/span>\n  <\/div>\n<\/div>\n\n<div class=\"ssr-shot\">\n  <div class=\"ssr-shot-f\">\n    <img fetchpriority=\"high\" src=\"https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2026\/09\/geopard-zonal-soil-sampling-plan-route.jpg?w=1200\" srcset=\"https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2026\/09\/geopard-zonal-soil-sampling-plan-route.jpg?w=640 640w, https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2026\/09\/geopard-zonal-soil-sampling-plan-route.jpg?w=1200 1200w, https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2026\/09\/geopard-zonal-soil-sampling-plan-route.jpg?w=2000 2000w\" sizes=\"(max-width: 1000px) 100vw, 904px\" width=\"2304\" height=\"1464\" decoding=\"async\" alt=\"A zone-based soil sampling plan in GeoPard: the field split into management zones, numbered sampling points and the walking route between them.\">\n  <\/div>\n  <p class=\"ssr-cap\">A zone-based sampling plan in GeoPard: numbered points and the route between them.<\/p>\n<\/div>\n\n<section id=\"ssr-rules\" aria-labelledby=\"ssr-rules-h\">\n  <h2 class=\"ssr-h2\" id=\"ssr-rules-h\">Soil sampling requirements by country<\/h2>\n  <p class=\"ssr-lede ssr-intro\">Rules differ by country, region, nutrient and farming activity. A law, a condition of a programme and an agronomic recommendation are not the same thing.<\/p>\n  <dl class=\"ssr-key\">\n    <div><dt><span class=\"ssr-badge is-mandatory\">Mandatory<\/span><\/dt><dd>Applies to every farm in scope.<\/dd><\/div>\n    <div><dt><span class=\"ssr-badge is-conditional\">Conditional<\/span><\/dt><dd>Applies once a condition is met: a nutrient programme, a stocking rate, an application.<\/dd><\/div>\n    <div><dt><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><\/dt><dd>Advice from a public body. Not law.<\/dd><\/div>\n    <!-- SSR-KEY-REVIEW BEGIN --><!-- SSR-KEY-REVIEW END -->\n    <div><dt><span class=\"ssr-ns\">Not specified<\/span><\/dt><dd>The source sets no value for this column.<\/dd><\/div>\n  <\/dl>\n\n  <div class=\"ssr-filters\" id=\"ssr-filters\" hidden>\n    <div class=\"ssr-fhead\">\n      <button type=\"button\" class=\"ssr-ftoggle\" aria-expanded=\"false\" aria-controls=\"ssr-fbody\">Filters<\/button>\n      <span class=\"ssr-count\" aria-hidden=\"true\"><b data-ssr-shown>0<\/b> of <b data-ssr-total>0<\/b><\/span>\n    <\/div>\n    <div class=\"ssr-fbody is-closed\" id=\"ssr-fbody\">\n<!-- SSR-FILTERS BEGIN -->\n<div class=\"ssr-ctl\" role=\"group\" aria-labelledby=\"ssr-lab-c\"><span class=\"ssr-ctl-lab\" id=\"ssr-lab-c\">Country<\/span><div class=\"ssr-chips\"><button type=\"button\" class=\"ssr-chip\" data-f=\"c\" data-v=\"AR\" aria-pressed=\"false\">Argentina<\/button><button type=\"button\" class=\"ssr-chip\" data-f=\"c\" data-v=\"AU\" aria-pressed=\"false\">Australia<\/button><button type=\"button\" class=\"ssr-chip\" data-f=\"c\" data-v=\"BE\" aria-pressed=\"false\">Belgium<\/button><button type=\"button\" class=\"ssr-chip\" data-f=\"c\" data-v=\"BR\" aria-pressed=\"false\">Brazil<\/button><button type=\"button\" class=\"ssr-chip\" data-f=\"c\" data-v=\"CA\" aria-pressed=\"false\">Canada<\/button><button type=\"button\" class=\"ssr-chip\" data-f=\"c\" data-v=\"DK\" aria-pressed=\"false\">Denmark<\/button><button type=\"button\" class=\"ssr-chip\" data-f=\"c\" data-v=\"FR\" aria-pressed=\"false\">France<\/button><button type=\"button\" class=\"ssr-chip\" data-f=\"c\" data-v=\"DE\" aria-pressed=\"false\">Germany<\/button><button type=\"button\" class=\"ssr-chip\" data-f=\"c\" data-v=\"IE\" aria-pressed=\"false\">Ireland<\/button><button type=\"button\" class=\"ssr-chip\" data-f=\"c\" data-v=\"IT\" aria-pressed=\"false\">Italy<\/button><button type=\"button\" class=\"ssr-chip\" data-f=\"c\" data-v=\"KZ\" aria-pressed=\"false\">Kazakhstan<\/button><button type=\"button\" class=\"ssr-chip\" data-f=\"c\" data-v=\"NL\" aria-pressed=\"false\">Netherlands<\/button><button type=\"button\" class=\"ssr-chip\" data-f=\"c\" data-v=\"PL\" aria-pressed=\"false\">Poland<\/button><button type=\"button\" class=\"ssr-chip\" data-f=\"c\" data-v=\"RO\" aria-pressed=\"false\">Romania<\/button><button type=\"button\" class=\"ssr-chip\" data-f=\"c\" data-v=\"ES\" aria-pressed=\"false\">Spain<\/button><button type=\"button\" class=\"ssr-chip\" data-f=\"c\" data-v=\"UA\" aria-pressed=\"false\">Ukraine<\/button><button type=\"button\" class=\"ssr-chip\" data-f=\"c\" data-v=\"GB\" aria-pressed=\"false\">United Kingdom<\/button><button type=\"button\" class=\"ssr-chip\" data-f=\"c\" data-v=\"US\" aria-pressed=\"false\">United States<\/button><\/div><\/div><div class=\"ssr-ctl\"><label class=\"ssr-ctl-lab\" for=\"ssr-region\">Region<\/label><select id=\"ssr-region\" class=\"ssr-select\"><option value=\"\">Every state, province and region<\/option><optgroup label=\"Australia\"><option value=\"AU-QLD\">Queensland<\/option><option value=\"AU-SA\">South Australia<\/option><option value=\"AU-TAS\">Tasmania<\/option><\/optgroup><optgroup label=\"Belgium\"><option value=\"BE-VLG\">Flanders<\/option><\/optgroup><optgroup label=\"Canada\"><option value=\"CA-AB\">Alberta<\/option><option value=\"CA-BC\">British Columbia<\/option><option value=\"CA-MB\">Manitoba<\/option><option value=\"CA-NL\">Newfoundland and Labrador<\/option><option value=\"CA-NS\">Nova Scotia<\/option><option value=\"CA-ON\">Ontario<\/option><option value=\"CA-SK\">Saskatchewan<\/option><\/optgroup><optgroup label=\"Italy\"><option value=\"IT-21\">Piedmont (Piemonte)<\/option><\/optgroup><optgroup label=\"United Kingdom\"><option value=\"GB-ENG\">England<\/option><option value=\"GB-NIR\">Northern Ireland<\/option><option value=\"GB-SCT\">Scotland<\/option><option value=\"GB-WLS\">Wales<\/option><\/optgroup><optgroup label=\"United States\"><option value=\"US-AL\">Alabama<\/option><option value=\"US-AK\">Alaska<\/option><option value=\"US-AZ\">Arizona<\/option><option value=\"US-AR\">Arkansas<\/option><option value=\"US-CA\">California<\/option><option value=\"US-CO\">Colorado<\/option><option value=\"US-CT\">Connecticut<\/option><option value=\"US-DE\">Delaware<\/option><option value=\"US-FL\">Florida<\/option><option value=\"US-GA\">Georgia<\/option><option value=\"US-HI\">Hawaii<\/option><option value=\"US-ID\">Idaho<\/option><option value=\"US-IL\">Illinois<\/option><option value=\"US-IN\">Indiana<\/option><option value=\"US-IA\">Iowa<\/option><option value=\"US-KS\">Kansas<\/option><option value=\"US-KY\">Kentucky<\/option><option value=\"US-LA\">Louisiana<\/option><option value=\"US-ME\">Maine<\/option><option value=\"US-MD\">Maryland<\/option><option value=\"US-MN\">Minnesota<\/option><option value=\"US-MS\">Mississippi<\/option><option value=\"US-MO\">Missouri<\/option><option value=\"US-MT\">Montana<\/option><option value=\"US-NE\">Nebraska<\/option><option value=\"US-NV\">Nevada<\/option><option value=\"US-NH\">New Hampshire<\/option><option value=\"US-NJ\">New Jersey<\/option><option value=\"US-NM\">New Mexico<\/option><option value=\"US-NY\">New York<\/option><option value=\"US-NC\">North Carolina<\/option><option value=\"US-ND\">North Dakota<\/option><option value=\"US-OH\">Ohio<\/option><option value=\"US-OK\">Oklahoma<\/option><option value=\"US-OR\">Oregon<\/option><option value=\"US-PA\">Pennsylvania<\/option><option value=\"US-SC\">South Carolina<\/option><option value=\"US-SD\">South Dakota<\/option><option value=\"US-TN\">Tennessee<\/option><option value=\"US-TX\">Texas<\/option><option value=\"US-UT\">Utah<\/option><option value=\"US-VT\">Vermont<\/option><option value=\"US-VA\">Virginia<\/option><option value=\"US-WA\">Washington<\/option><option value=\"US-WI\">Wisconsin<\/option><option value=\"US-WY\">Wyoming<\/option><\/optgroup><\/select><\/div><div class=\"ssr-ctl\" role=\"group\" aria-labelledby=\"ssr-lab-p\"><span class=\"ssr-ctl-lab\" id=\"ssr-lab-p\">Purpose<\/span><div class=\"ssr-chips\"><button type=\"button\" class=\"ssr-chip\" data-f=\"p\" data-v=\"n\" aria-pressed=\"false\">Nitrogen<\/button><button type=\"button\" class=\"ssr-chip\" data-f=\"p\" data-v=\"fertility\" aria-pressed=\"false\">pH, P, K, Mg<\/button><button type=\"button\" class=\"ssr-chip\" data-f=\"p\" data-v=\"p\" aria-pressed=\"false\">Phosphorus<\/button><button type=\"button\" class=\"ssr-chip\" data-f=\"p\" data-v=\"nmin\" aria-pressed=\"false\">Nitrate residue (Nmin)<\/button><\/div><\/div><div class=\"ssr-ctl\" role=\"group\" aria-labelledby=\"ssr-lab-s\"><span class=\"ssr-ctl-lab\" id=\"ssr-lab-s\">Status<\/span><div class=\"ssr-chips\"><button type=\"button\" class=\"ssr-chip\" data-f=\"s\" data-v=\"conditional\" aria-pressed=\"false\">Conditional<\/button><button type=\"button\" class=\"ssr-chip\" data-f=\"s\" data-v=\"official_guidance\" aria-pressed=\"false\">Official guidance<\/button><\/div><\/div><div class=\"ssr-ctl\" role=\"group\" aria-labelledby=\"ssr-lab-m\"><span class=\"ssr-ctl-lab\" id=\"ssr-lab-m\">Method<\/span><div class=\"ssr-chips\"><button type=\"button\" class=\"ssr-chip\" data-f=\"m\" data-v=\"pattern\" aria-pressed=\"false\">Set pattern<\/button><button type=\"button\" class=\"ssr-chip\" data-f=\"m\" data-v=\"grid\" aria-pressed=\"false\">Grid<\/button><button type=\"button\" class=\"ssr-chip\" data-f=\"m\" data-v=\"zone\" aria-pressed=\"false\">Zones<\/button><button type=\"button\" class=\"ssr-chip\" data-f=\"m\" data-v=\"stratified\" aria-pressed=\"false\">Stratified random<\/button><button type=\"button\" class=\"ssr-chip\" data-f=\"m\" data-v=\"representative\" aria-pressed=\"false\">Representative, protocol set locally<\/button><button type=\"button\" class=\"ssr-chip\" data-f=\"m\" data-v=\"none\" aria-pressed=\"false\">Not specified<\/button><\/div><\/div>\n<!-- SSR-FILTERS END -->\n      <div class=\"ssr-search\">\n        <label class=\"ssr-vh\" for=\"ssr-q\">Search by country, region, programme or law<\/label>\n        <input type=\"search\" id=\"ssr-q\" placeholder=\"Country, region, programme or law\" autocomplete=\"off\" spellcheck=\"false\">\n        <span class=\"ssr-count\"><b data-ssr-shown>0<\/b> of <b data-ssr-total>0<\/b> rules<\/span>\n        <button type=\"button\" class=\"ssr-reset\" id=\"ssr-reset\">Clear all<\/button>\n      <\/div>\n    <\/div>\n  <\/div>\n  <p class=\"ssr-vh\" id=\"ssr-live\" aria-live=\"polite\"><\/p>\n\n  <div class=\"ssr-scroll\" data-no-translation>\n    <table class=\"ssr-table\" role=\"table\" aria-labelledby=\"ssr-rules-h\">\n      <caption>Soil sampling rules by country and purpose, with the status and official source of each<\/caption>\n      <colgroup><col class=\"c-place\"><col class=\"c-pur\"><col class=\"c-time\"><col class=\"c-area\"><col class=\"c-meth\"><col class=\"c-depth\"><col class=\"c-cores\"><col class=\"c-stat\"><\/colgroup>\n      <thead role=\"rowgroup\"><tr role=\"row\">\n        <th role=\"columnheader\" scope=\"col\">Country \/ region<\/th>\n        <th role=\"columnheader\" scope=\"col\">Purpose \/ programme<\/th>\n        <th role=\"columnheader\" scope=\"col\">Time \/ frequency<\/th>\n        <th role=\"columnheader\" scope=\"col\">Area per sample<\/th>\n        <th role=\"columnheader\" scope=\"col\">Method<\/th>\n        <th role=\"columnheader\" scope=\"col\">Depth<\/th>\n        <th role=\"columnheader\" scope=\"col\">Cores<\/th>\n        <th role=\"columnheader\" scope=\"col\">Status and source<\/th>\n      <\/tr><\/thead>\n<!-- SSR-ROWS BEGIN -->\n<tbody class=\"ssr-grp\" data-g=\"AR\" role=\"rowgroup\"><tr role=\"row\"><th role=\"rowheader\" colspan=\"8\" scope=\"colgroup\" id=\"country-ar\">Argentina <a class=\"ssr-grp-link\" href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/argentina\/\">Exact wording for Argentina<\/a><\/th><\/tr><\/tbody>\n<tbody id=\"rule-ar-inta-anguil-soil-nitrate-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"AR\" data-r=\"\" data-p=\"n\" data-s=\"official_guidance\" data-m=\"zone\" data-q=\"argentina | inta anguil and unlpam, keys to soil sampling for nitrate analysis | soil nitrate test before nitrogen fertilising | iturri, kloster and d\u00edaz-zorita, claves para la toma de muestras de suelos para el an\u00e1lisis de n-nitratos, notas agr\u00edcolas pampeanas 2021 no. 3 (inta repository) | nitrogen | argentina | inta | inta anguil | nitratos | n-nitratos | muestreo de nitratos | regi\u00f3n pampeana\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Argentina<\/span><span class=\"ssr-sub\">Written for the Pampas region (regi\u00f3n pampeana) by INTA Anguil and the National University of La Pampa.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil nitrate test before nitrogen fertilising<\/span><span class=\"ssr-sub\">INTA Anguil and UNLPam, keys to soil sampling for nitrate analysis<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Result valid<\/span> Sample no more than 15 days before fertilising, with no heavy rain in between<\/li><li><span class=\"k\">Repeat<\/span> Every time a crop nutrition strategy is planned<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">One sample per sector of different apparent productivity (for example hilltop, mid-slope and low ground).<\/td><td role=\"cell\" data-label=\"Depth\">Winter crops 0 to 40 cm, summer crops 0 to 60 cm, in separate layers (for example every 20 cm) that are never mixed.<\/td><td role=\"cell\" data-label=\"Cores\">10 to 15 subsamples per sample<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/repositorio.inta.gob.ar\/bitstream\/handle\/20.500.12123\/9521\/INTA_CR_LaPampaSanLuis_EEAAnguil_Kloster,_N._Claves%20para%20la%20toma%20de%20muestras%20de%20suelos%20para%20el%20an%C3%A1lisis%20de%20N-Nitratos.pdf\" data-ssr-src rel=\"noopener\">INTA repository, Claves para la toma de muestras de suelos para el an\u00e1lisis de N-Nitratos (PDF, 2021)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"ar-inta-anguil-soil-nitrate-sampling\" data-c=\"Argentina\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice from INTA, the national agricultural technology institute, with the public National University of La Pampa, for nitrate tests before fertilising. Not law.<\/dd><\/div><div><dt>Field identifiers<\/dt><dd>Each bag labelled with the farm name, the management unit or lot, and the sampling depth.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Iturri, Kloster and D\u00edaz-Zorita, Claves para la toma de muestras de suelos para el an\u00e1lisis de N-Nitratos, Notas Agr\u00edcolas Pampeanas 2021 No. 3 (INTA repository)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/repositorio.inta.gob.ar\/bitstream\/handle\/20.500.12123\/9521\/INTA_CR_LaPampaSanLuis_EEAAnguil_Kloster,_N._Claves%20para%20la%20toma%20de%20muestras%20de%20suelos%20para%20el%20an%C3%A1lisis%20de%20N-Nitratos.pdf\" data-ssr-src rel=\"noopener\">INTA repository, Claves para la toma de muestras de suelos para el an\u00e1lisis de N-Nitratos (PDF, 2021)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/argentina\/#rule-ar-inta-anguil-soil-nitrate-sampling\">The exact wording, in the source language, on the Argentina page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-ar-magyp-soil-sampling-instructions\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"AR\" data-r=\"\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"zone pattern\" data-q=\"argentina | ministry of agriculture (magyp), cerrando brechas productivas, soil sampling instructions | soil sample for fertility analysis | ministerio de agricultura, ganader\u00eda y pesca, instrucciones para toma de muestra de suelo (cerrando brechas productivas) | ph, p, k, mg | argentina | magyp | muestreo de suelo | toma de muestra de suelo | cerrando brechas productivas | inta\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Argentina<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil sample for fertility analysis<\/span><span class=\"ssr-sub\">Ministry of Agriculture (MAGyP), Cerrando Brechas Productivas, soil sampling instructions<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Area per sample\">One composite per 5 to 10 ha (at least 10 subsamples), or per 15 to 20 ha (20 subsamples), on uniform ground<\/td><td role=\"cell\" data-label=\"Method\">Separate homogeneous zones and sample each. Zigzag, diagonals or simple random.<\/td><td role=\"cell\" data-label=\"Depth\">Generally 0 to 20 cm, as one layer or split into 0 to 10 and 10 to 20 cm. Fruit crops in 15 to 20 cm steps to 100 to 150 cm, at the adviser\u2019s discretion.<\/td><td role=\"cell\" data-label=\"Cores\">At least 10 subsamples per 5 to 10 ha; 20 subsamples per 15 to 20 ha<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/www.magyp.gob.ar\/brechaproductiva\/_pdf\/instrucciones-para-toma-de-muestra-de-suelo.pdf\" data-ssr-src rel=\"noopener\">MAGyP, Instrucciones para toma de muestra de suelo (PDF)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"ar-magyp-soil-sampling-instructions\" data-c=\"Argentina\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Sampling instructions from the national agriculture authority (now the Secretariat of Agriculture, Livestock and Fisheries), written for its wheat yield-gap programme. Not law.<\/dd><\/div><div><dt>Field identifiers<\/dt><dd>Label with the lot history (previous crop, fertiliser and rate) and the field location.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Ministerio de Agricultura, Ganader\u00eda y Pesca, Instrucciones para toma de muestra de suelo (Cerrando Brechas Productivas)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.magyp.gob.ar\/brechaproductiva\/_pdf\/instrucciones-para-toma-de-muestra-de-suelo.pdf\" data-ssr-src rel=\"noopener\">MAGyP, Instrucciones para toma de muestra de suelo (PDF)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/argentina\/#rule-ar-magyp-soil-sampling-instructions\">The exact wording, in the source language, on the Argentina page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody class=\"ssr-grp\" data-g=\"AU\" role=\"rowgroup\"><tr role=\"row\"><th role=\"rowheader\" colspan=\"8\" scope=\"colgroup\" id=\"country-au\">Australia <a class=\"ssr-grp-link\" href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/australia\/\">Exact wording for Australia<\/a><\/th><\/tr><\/tbody>\n<tbody id=\"rule-au-qld-reef-sugarcane-soil-test\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"AU\" data-r=\"AU-QLD\" data-p=\"p\" data-s=\"conditional\" data-m=\"representative\" data-q=\"australia | queensland | reef protection regulations, agricultural era standard for sugarcane cultivation | soil test for the nitrogen and phosphorus rate (organic carbon, p, p buffer index) | environmental protection regulation 2019 (qld), section 24 and schedule 7; agricultural era standard for sugarcane cultivation, version 2; prescribed methodology for sugarcane cultivation, version 2 | standard condition sc6; prescribed methodology part a | phosphorus | australia | queensland | qld | reef regulations | great barrier reef | sugarcane | cane | six easy steps\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Queensland<\/span><span class=\"ssr-sub\">Australia<\/span><span class=\"ssr-sub\">Queensland only, and only sugarcane grown commercially in the Great Barrier Reef catchment.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil test for the nitrogen and phosphorus rate (organic carbon, P, P buffer index)<\/span><span class=\"ssr-sub\">Reef protection regulations, Agricultural ERA standard for sugarcane cultivation<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Result valid<\/span> Sampled and tested within the 12 months before fertiliser is applied to the first crop of a crop cycle<\/li><li><span class=\"k\">Wait<\/span> At least 6 months after fertiliser or ameliorants on the area sampled<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">One representative block of average productivity for each group of plant blocks with the same soil type and the same management. Separate samples for blocks with and without past mill by-product applications. Where rates vary within a block, at least 20 cores per soil type, each soil type its own composite.<\/td><td role=\"cell\" data-label=\"Depth\">0 to 20 cm, cores from the shoulder of the cane row<\/td><td role=\"cell\" data-label=\"Cores\">At least 20 cores per composite for a representative block or area under 15 ha. At least 40 cores over 15 ha.<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/www.legislation.qld.gov.au\/view\/whole\/html\/inforce\/current\/sl-2019-0155\" data-ssr-src rel=\"noopener\">Environmental Protection Regulation 2019 (Qld), section 24 and schedule 7<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"au-qld-reef-sugarcane-soil-test\" data-c=\"Queensland\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Anyone growing sugarcane on a commercial basis in the Great Barrier Reef catchment, before fertiliser goes on a new plant cane crop (or a new crop cycle when the plant crop gets none). In force from 1 December 2019 in the Wet Tropics, Burdekin and Mackay Whitsunday regions, and from 1 December 2022 in the Fitzroy and Burnett Mary regions. Where new cane land needs an environmental authority, from the day that authority starts.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>NATA or ASPAC accredited laboratory, or equivalent certification. Organic carbon (Walkley Black, method 6A1), BSES extractable P (9G2 or 9G1), P buffer index (9I2), and pH (1:5 water, 4A1) where Colwell P (9B1 or 9B2) is used.<\/dd><\/div><div><dt>Field identifiers<\/dt><dd>Records, made within 3 business days and kept at least 6 years: date of soil testing, the location and dominant soil type sampled, a map of the block or management zone boundaries sampled, and a soil map of the dominant soil types there.<\/dd><\/div><div><dt>In force from<\/dt><dd>1 December 2019<\/dd><\/div><div><dt>Legal text<\/dt><dd>Environmental Protection Regulation 2019 (Qld), section 24 and schedule 7; Agricultural ERA standard for sugarcane cultivation, version 2; Prescribed methodology for sugarcane cultivation, version 2, Standard condition SC6; Prescribed methodology Part A<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.legislation.qld.gov.au\/view\/whole\/html\/inforce\/current\/sl-2019-0155\" data-ssr-src rel=\"noopener\">Environmental Protection Regulation 2019 (Qld), section 24 and schedule 7<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><li><a href=\"https:\/\/www.qld.gov.au\/__data\/assets\/pdf_file\/0017\/113147\/sugarcane-era-standard.pdf\" data-ssr-src rel=\"noopener\">Agricultural ERA standard for sugarcane cultivation, version 2 (PDF)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><li><a href=\"https:\/\/www.qld.gov.au\/__data\/assets\/pdf_file\/0016\/113146\/prescribed-method-sugarcane.pdf\" data-ssr-src rel=\"noopener\">Prescribed methodology for sugarcane cultivation, version 2 (PDF)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/australia\/#rule-au-qld-reef-sugarcane-soil-test\">The exact wording, in the source language, on the Australia page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-au-sa-ki-landscape-board-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"AU\" data-r=\"AU-SA\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"zone pattern\" data-q=\"australia | south australia | kangaroo island landscape board, how to take a soil sample for chemical analysis | soil sample for chemical analysis | kangaroo island landscape board, how to take a soil sample for chemical analysis (fact sheet 2025) | ph, p, k, mg | australia | south australia | sa | pirsa | kangaroo island | landscape board\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">South Australia<\/span><span class=\"ssr-sub\">Australia<\/span><span class=\"ssr-sub\">South Australia only, written for Kangaroo Island. Advice from the Kangaroo Island Landscape Board, a regional landscape board established under the Landscape South Australia Act 2019; no statewide PIRSA sampling page was found.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil sample for chemical analysis<\/span><span class=\"ssr-sub\">Kangaroo Island Landscape Board, How to take a soil sample for chemical analysis<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Season<\/span> Late summer or early autumn before fertiliser, or pre-sowing. Same time each cycle.<\/li><li><span class=\"k\">Wait<\/span> Not after recent fertiliser, compost or manure<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">Zones by soil type, crop history, yield or problem areas; cores in a zigzag across each zone.<\/td><td role=\"cell\" data-label=\"Depth\">0 to 10 cm for standard tests (0 to 5 cm also offered), the same at every site. For subsoil acidity, salinity or sodicity, by soil horizon (for example 0 to 10, 10 to 30, 30 to 60 cm), each layer its own composite.<\/td><td role=\"cell\" data-label=\"Cores\">15 to 20 cores per sampling zone<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/www.landscape.sa.gov.au\/ki\/land-and-farming\/land-management-support\/managing-soil-pasture-livestock\/how-to-take-a-soil-sample-for-chemical-analysis\" data-ssr-src rel=\"noopener\">Kangaroo Island Landscape Board, How to take a soil sample for chemical analysis<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"au-sa-ki-landscape-board-soil-sampling\" data-c=\"South Australia\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice from the Kangaroo Island Landscape Board, a South Australian statutory regional landscape board, for paddock soil tests. Not law.<\/dd><\/div><div><dt>Field identifiers<\/dt><dd>Label paddock name, depth, date and sample ID; record GPS location, depth and date.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Kangaroo Island Landscape Board, How to take a soil sample for chemical analysis (fact sheet 2025)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.landscape.sa.gov.au\/ki\/land-and-farming\/land-management-support\/managing-soil-pasture-livestock\/how-to-take-a-soil-sample-for-chemical-analysis\" data-ssr-src rel=\"noopener\">Kangaroo Island Landscape Board, How to take a soil sample for chemical analysis<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/australia\/#rule-au-sa-ki-landscape-board-soil-sampling\">The exact wording, in the source language, on the Australia page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-au-tas-nre-soil-sampling-procedure\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"AU\" data-r=\"AU-TAS\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"pattern\" data-q=\"australia | tasmania | nre tasmania, soil sampling procedure | routine soil fertility sampling | department of natural resources and environment tasmania, soil sampling procedure (last published 21 june 2021) | ph, p, k, mg | australia | tasmania | tas | nre tas\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Tasmania<\/span><span class=\"ssr-sub\">Australia<\/span><span class=\"ssr-sub\">Tasmania advice only. Other states publish their own.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Routine soil fertility sampling<\/span><span class=\"ssr-sub\">NRE Tasmania, Soil Sampling Procedure<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Season<\/span> Same time every year, preferably when soil moisture will be the same; usually spring or late winter<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">A zigzag across the paddock, a circle around it, or random cores in a small typical area. To return to the same places, a defined transect across every paddock, marked by GPS and painted fence posts. Large areas with different characteristics sampled separately.<\/td><td role=\"cell\" data-label=\"Depth\">Cropping 0 to 150 mm, kept during pasture rotations. Pasture 0 to 75 mm.<\/td><td role=\"cell\" data-label=\"Cores\">At least 50 cores for a standard paddock of about 20 ha, more as paddocks grow (at least 100 for 80 ha)<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/nre.tas.gov.au\/agriculture\/land-management-and-soils\/soil-management\/soil-sampling\" data-ssr-src rel=\"noopener\">NRE Tasmania, Soil Sampling Procedure<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"au-tas-nre-soil-sampling-procedure\" data-c=\"Tasmania\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice from the Tasmanian state department for paddock soil tests. Not law.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>A laboratory accredited for the tests wanted, with NATA or ASPAC accreditation (or both).<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Department of Natural Resources and Environment Tasmania, Soil Sampling Procedure (last published 21 June 2021)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/nre.tas.gov.au\/agriculture\/land-management-and-soils\/soil-management\/soil-sampling\" data-ssr-src rel=\"noopener\">NRE Tasmania, Soil Sampling Procedure<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/australia\/#rule-au-tas-nre-soil-sampling-procedure\">The exact wording, in the source language, on the Australia page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody class=\"ssr-grp\" data-g=\"BE\" role=\"rowgroup\"><tr role=\"row\"><th role=\"rowheader\" colspan=\"8\" scope=\"colgroup\" id=\"country-be\">Belgium <a class=\"ssr-grp-link\" href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/belgium\/\">Exact wording for Belgium<\/a><\/th><\/tr><\/tbody>\n<tbody id=\"rule-be-vlg-mestdecreet-fosfaatklasse\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"BE\" data-r=\"BE-VLG\" data-p=\"p\" data-s=\"conditional\" data-m=\"representative\" data-q=\"belgium | flanders | mestdecreet, phosphate classes (fosfaatklassen i to iv) | phosphate class for the phosphate fertilisation norm | mestdecreet (decreet van 22 december 2006), as amended | art. 13, \u00a7 3 | phosphorus | belgi\u00eb | belgie | belgique | vlaanderen | flanders | mestdecreet | mestbank | vlm | fosfaatklasse | fosfaatanalyse | p-al | bodemanalyse\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Flanders<\/span><span class=\"ssr-sub\">Belgium<\/span><span class=\"ssr-sub\">Flanders only. Wallonia and Brussels have their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Phosphate class for the phosphate fertilisation norm<\/span><span class=\"ssr-sub\">Mestdecreet, phosphate classes (fosfaatklassen I to IV)<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Result valid<\/span> At most 5 years old when sent to the Mestbank. The class lapses on 1 January of the sixth year after the analysis.<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">One soil sample per parcel, taken by an approved laboratory chosen through the Mestbank portal. For analyses from 2017 on, only samplings notified to the Mestbank in advance count.<\/td><td role=\"cell\" data-label=\"Depth\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/www.ejustice.just.fgov.be\/eli\/decreet\/2006\/12\/22\/2006037097\/justel\" data-ssr-src rel=\"noopener\">Mestdecreet, consolidated text (Justel, Belgian Official Journal)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"be-vlg-mestdecreet-fosfaatklasse\" data-c=\"Flanders\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Parcels whose farmer wants a phosphate class below the default class IV, so as to apply more phosphate. The parcel must be in that year&#8217;s single application (verzamelaanvraag).<\/dd><\/div><div><dt>Outside the rule<\/dt><dd>Without an analysis the parcel stays in class IV, except parcels of at most 0.5 ha in area type 0 or 1 and at most 0.3 ha in area type 2 or 3, which default to class III.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>An approved laboratory (art. 61 \u00a7 7), commissioned by the Mestbank or the farmer. Plant-available phosphate (P-AL), mg P per 100 g air-dry soil.<\/dd><\/div><div><dt>Field identifiers<\/dt><dd>The analysis must state the X-Y coordinates of the parcel analysed.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Mestdecreet (Decreet van 22 december 2006), as amended, Art. 13, \u00a7 3<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.ejustice.just.fgov.be\/eli\/decreet\/2006\/12\/22\/2006037097\/justel\" data-ssr-src rel=\"noopener\">Mestdecreet, consolidated text (Justel, Belgian Official Journal)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><li><a href=\"https:\/\/www.vlm.be\/nl\/themas\/waterkwaliteit\/Mestbank\/bodemstalen\/fosfaat\/Paginas\/default.aspx\" data-ssr-src rel=\"noopener\">VLM, Fosfaatstalen en classificatie<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/belgium\/#rule-be-vlg-mestdecreet-fosfaatklasse\">The exact wording, in the source language, on the Belgium page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-be-vlg-mestdecreet-nitraatresidu\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"BE\" data-r=\"BE-VLG\" data-p=\"nmin\" data-s=\"conditional\" data-m=\"stratified\" data-q=\"belgium | flanders | mestdecreet, nitrate residue farm evaluation (bedrijfsevaluatie), seventh manure action programme (map 7) | autumn nitrate residue, farm evaluation | mestdecreet (decreet van 22 december 2006 houdende de bescherming van water tegen de verontreiniging door nitraten uit agrarische bronnen), as amended | art. 3 (definition of nitraatresidu) and art. 15 | nitrate residue (nmin) | belgi\u00eb | belgie | belgique | vlaanderen | flanders | mestdecreet | mestbank | vlm | map7 | map 7 | nitraatresidu | nitraatresidu-evaluatie | bedrijfsevaluatie\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Flanders<\/span><span class=\"ssr-sub\">Belgium<\/span><span class=\"ssr-sub\">Flanders only. Wallonia and Brussels have their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Autumn nitrate residue, farm evaluation<\/span><span class=\"ssr-sub\">Mestdecreet, nitrate residue farm evaluation (bedrijfsevaluatie), seventh manure action programme (MAP 7)<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Season<\/span> From 2026, 1 October to 30 November. The consolidated decree definition still reads 1 October to 15 November.<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">From 2026: one subsample per 5 ha (previously one per 2 ha)<\/td><td role=\"cell\" data-label=\"Method\">From 2026, stratified sampling: the parcel is split into zones (strata) with one random point in each.<\/td><td role=\"cell\" data-label=\"Depth\">0 to 90 cm<\/td><td role=\"cell\" data-label=\"Cores\">From 2026: 40 sampling points per subsample (previously 15)<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/www.ejustice.just.fgov.be\/eli\/decreet\/2006\/12\/22\/2006037097\/justel\" data-ssr-src rel=\"noopener\">Mestdecreet, consolidated text (Justel, Belgian Official Journal)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"be-vlg-mestdecreet-nitraatresidu\" data-c=\"Flanders\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Farms the Mestbank orders to carry out a farm evaluation, and farms that sign up by 31 May. A farm evaluation covers at least three parcels, at least one parcel for each nitrate residue type on the farm that year, and at least as many determinations as the square root of the farm hectares. The consolidated decree text still also requires a farm evaluation in the year after a measured exceedance (art. 15, paragraph 3); VLM says that duty ended with MAP 7. Until that is settled, treat an exceedance as a possible trigger.<\/dd><\/div><div><dt>Outside the rule<\/dt><dd>According to VLM, the former standard duty (after an exceedance, or one parcel a year for exempted farms) has been dropped since MAP 7 (2025).<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>An approved laboratory, commissioned by and at the cost of the farmer. Results in kg nitrate N per ha, by the methods book of art. 61 \u00a7 8.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Mestdecreet (Decreet van 22 december 2006 houdende de bescherming van water tegen de verontreiniging door nitraten uit agrarische bronnen), as amended, Art. 3 (definition of nitraatresidu) and art. 15<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.ejustice.just.fgov.be\/eli\/decreet\/2006\/12\/22\/2006037097\/justel\" data-ssr-src rel=\"noopener\">Mestdecreet, consolidated text (Justel, Belgian Official Journal)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><li><a href=\"https:\/\/www.vlm.be\/nl\/themas\/Waterkwaliteit\/Mestbank\/bodemstalen\/nitraatresidustalen\/\" data-ssr-src rel=\"noopener\">VLM, Wat is het nitraatresidu?<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><li><a href=\"https:\/\/www.vlm.be\/nl\/themas\/waterkwaliteit\/Mestbank\/bodemstalen\/Gestratificeerde_bemonstering\/Paginas\/default.aspx\" data-ssr-src rel=\"noopener\">VLM, Gestratificeerde bemonstering<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/belgium\/#rule-be-vlg-mestdecreet-nitraatresidu\">The exact wording, in the source language, on the Belgium page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody class=\"ssr-grp\" data-g=\"BR\" role=\"rowgroup\"><tr role=\"row\"><th role=\"rowheader\" colspan=\"8\" scope=\"colgroup\" id=\"country-br\">Brazil <a class=\"ssr-grp-link\" href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/brazil\/\">Exact wording for Brazil<\/a><\/th><\/tr><\/tbody>\n<tbody id=\"rule-br-embrapa-soil-sampling-liming-fertilising\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"BR\" data-r=\"\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"zone pattern\" data-q=\"brazil | embrapa, amostragem de solo para recomenda\u00e7\u00e3o de calagem e aduba\u00e7\u00e3o | soil sample for lime and fertiliser recommendations | embrapa mandioca e fruticultura tropical, amostragem de solo para recomenda\u00e7\u00e3o de calagem e aduba\u00e7\u00e3o (folder, june 2009) | ph, p, k, mg | brasil | brazil | embrapa | amostragem de solo | an\u00e1lise de solo | analise de solo | plantio direto\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Brazil<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil sample for lime and fertiliser recommendations<\/span><span class=\"ssr-sub\">Embrapa, Amostragem de solo para recomenda\u00e7\u00e3o de calagem e aduba\u00e7\u00e3o<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Season<\/span> Annual crops: end of the rainy season, ahead of the next planting. Perennial crops in production: just after harvest, before the next fertilising.<\/li><li><span class=\"k\">Wait<\/span> Where crop nutrition is monitored: 30 days after the last fertiliser, 15 days after fertigation<\/li><li><span class=\"k\">Repeat<\/span> Where crop nutrition is monitored: every year, sometimes twice a year, alongside leaf analysis<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">Homogeneous plots (talh\u00f5es) of at most 10 ha, one composite each<\/td><td role=\"cell\" data-label=\"Method\">Split the area into homogeneous plots by soil colour, relief, texture, drainage, erosion, vegetation or previous crop, cropping, liming and fertiliser history, management and yield; walk each plot at random in a zigzag.<\/td><td role=\"cell\" data-label=\"Depth\">0 to 20 cm for conventional tillage, perennial crops, and no-till fertilised in the row up to the 6th consecutive crop. 0 to 10 cm for no-till after the 6th crop, established pasture and undisturbed natural grassland. 20 to 40 and 40 to 60 cm before the first planting, to find barriers.<\/td><td role=\"cell\" data-label=\"Cores\">At least 10 points per homogeneous plot, ideally about 20<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/www.infoteca.cnptia.embrapa.br\/infoteca\/bitstream\/doc\/655892\/1\/folderamostragemsolo.pdf\" data-ssr-src rel=\"noopener\">Embrapa, Amostragem de Solo para Recomenda\u00e7\u00e3o de Calagem e Aduba\u00e7\u00e3o (PDF folder, 2009)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"br-embrapa-soil-sampling-liming-fertilising\" data-c=\"Brazil\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice from Embrapa, the federal agricultural research corporation, for lime and fertiliser recommendations. Not law.<\/dd><\/div><div><dt>Field identifiers<\/dt><dd>Label each sample with date, place and depth of collection.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Embrapa Mandioca e Fruticultura Tropical, Amostragem de Solo para Recomenda\u00e7\u00e3o de Calagem e Aduba\u00e7\u00e3o (folder, June 2009)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.infoteca.cnptia.embrapa.br\/infoteca\/bitstream\/doc\/655892\/1\/folderamostragemsolo.pdf\" data-ssr-src rel=\"noopener\">Embrapa, Amostragem de Solo para Recomenda\u00e7\u00e3o de Calagem e Aduba\u00e7\u00e3o (PDF folder, 2009)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/brazil\/#rule-br-embrapa-soil-sampling-liming-fertilising\">The exact wording, in the source language, on the Brazil page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody class=\"ssr-grp\" data-g=\"CA\" role=\"rowgroup\"><tr role=\"row\"><th role=\"rowheader\" colspan=\"8\" scope=\"colgroup\" id=\"country-ca\">Canada <a class=\"ssr-grp-link\" href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/canada\/\">Exact wording for Canada<\/a><\/th><\/tr><\/tbody>\n<tbody id=\"rule-ca-ab-aopa-ar-267-2001-soil-test\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"CA\" data-r=\"CA-AB\" data-p=\"n\" data-s=\"conditional\" data-m=\"representative\" data-q=\"canada | alberta | agricultural operation practices act (aopa): nutrient management | soil test before applying manure, organic materials or compost | standards and administration regulation, alta reg 267\/2001, under the agricultural operation practices act (consolidated to alta reg 146\/2025, current as of june 23, 2025) | sections 25 and 28(5), schedule 3 | nitrogen | alberta | canada | aopa | agricultural operation practices act | standards and administration regulation | nrcb\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Alberta<\/span><span class=\"ssr-sub\">Canada<\/span><span class=\"ssr-sub\">Alberta only. Other provinces have their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil test before applying manure, organic materials or compost<\/span><span class=\"ssr-sub\">Agricultural Operation Practices Act (AOPA): nutrient management<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Result valid<\/span> Soil test no older than 3 years when manure, organic materials or compost is applied<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">Sampling and testing follow the most recent edition of the Manual on Soil Sampling and Methods of Analysis (Canadian Society of Soil Science).<\/td><td role=\"cell\" data-label=\"Depth\">Nitrate-N 0 to 60 cm. Salinity (EC) 0 to 15 cm. Texture once, at 0 to 15 cm and 15 to 30 cm.<\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/kings-printer.alberta.ca\/documents\/Regs\/2001_267.pdf\" data-ssr-src rel=\"noopener\">Alta Reg 267\/2001, office consolidation (Alberta King\u2019s Printer)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"ca-ab-aopa-ar-267-2001-soil-test\" data-c=\"Alberta\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Anyone applying a total of 500 tonnes or more of manure, organic materials or compost a year: the receiving soil must have been tested within the previous 3 years.<\/dd><\/div><div><dt>Outside the rule<\/dt><dd>People applying less than 500 tonnes a year in total. An approval officer or inspector may instead permit application under a nutrient management plan they approve as giving equal or greater protection to water and soil.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>Standard laboratory procedures. Tests must include extractable nitrate-N, salinity by electrical conductivity and a one-time soil texture.<\/dd><\/div><div><dt>Field identifiers<\/dt><dd>Records kept for 5 years: legal land description and soil test results by the area receiving the material.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Standards and Administration Regulation, Alta Reg 267\/2001, under the Agricultural Operation Practices Act (consolidated to Alta Reg 146\/2025, current as of June 23, 2025), Sections 25 and 28(5), Schedule 3<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/kings-printer.alberta.ca\/documents\/Regs\/2001_267.pdf\" data-ssr-src rel=\"noopener\">Alta Reg 267\/2001, office consolidation (Alberta King\u2019s Printer)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/canada\/#rule-ca-ab-aopa-ar-267-2001-soil-test\">The exact wording, in the source language, on the Canada page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-ca-ab-agriculture-soil-sampling-guidance\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"CA\" data-r=\"CA-AB\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"zone grid\" data-q=\"canada | alberta | alberta agriculture soil sampling advice | routine soil fertility sampling | alberta agriculture, chapter 3.3 soil sampling (nutrient management planning publication, pdf dated 2008) | ph, p, k, mg | alberta | canada | aopa | agricultural operation practices act | standards and administration regulation | nrcb\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Alberta<\/span><span class=\"ssr-sub\">Canada<\/span><span class=\"ssr-sub\">Alberta only. Other provinces have their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Routine soil fertility sampling<\/span><span class=\"ssr-sub\">Alberta Agriculture soil sampling advice<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> Ideally every field every year; sampling every other year, with estimates between, is an alternative<\/li><li><span class=\"k\">Season<\/span> Spring-sown annual crops: early spring once the soil has thawed, or the previous fall once soil is below 5 to 7 degrees C. Established perennials: each spring before active growth.<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">One random composite sample suits fields under 30 ha (80 acres) that have been uniformly cropped and have little natural variation<\/td><td role=\"cell\" data-label=\"Method\">Random composite, directed random by management zone, benchmark, landscape-directed benchmark or grid sampling.<\/td><td role=\"cell\" data-label=\"Depth\">Each core split 0 to 15, 15 to 30 and 30 to 60 cm. N and S from 0 to 60 cm, P and K from 0 to 15 cm.<\/td><td role=\"cell\" data-label=\"Cores\">15 to 20 cores per bulk sample<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/www1.agriculture.alberta.ca\/$department\/deptdocs.nsf\/all\/epw11920\/$FILE\/3-3.pdf\" data-ssr-src rel=\"noopener\">Alberta Agriculture, Chapter 3.3 Soil Sampling (PDF)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"ca-ab-agriculture-soil-sampling-guidance\" data-c=\"Alberta\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for Alberta farms from the provincial agriculture department. Not law.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Alberta Agriculture, Chapter 3.3 Soil Sampling (nutrient management planning publication, PDF dated 2008)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www1.agriculture.alberta.ca\/$department\/deptdocs.nsf\/all\/epw11920\/$FILE\/3-3.pdf\" data-ssr-src rel=\"noopener\">Alberta Agriculture, Chapter 3.3 Soil Sampling (PDF)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/canada\/#rule-ca-ab-agriculture-soil-sampling-guidance\">The exact wording, in the source language, on the Canada page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-ca-bc-aem-code-phosphorus-test\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"CA\" data-r=\"CA-BC\" data-p=\"p\" data-s=\"conditional\" data-m=\"representative\" data-q=\"canada | british columbia | code of practice for agricultural environmental management | soil phosphorus test | code of practice for agricultural environmental management, b.c. reg. 8\/2019, under the environmental management act (consolidation current to october 27, 2026) | sections 51(2), 53 and 55 | phosphorus | british columbia | b.c. | canada | aemcop | code of practice for agricultural environmental management | phnt | post-harvest nitrate test\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">British Columbia<\/span><span class=\"ssr-sub\">Canada<\/span><span class=\"ssr-sub\">British Columbia only. Other provinces have their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil phosphorus test<\/span><span class=\"ssr-sub\">Code of Practice for Agricultural Environmental Management<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> At least once every 3 years<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">A representative sample.<\/td><td role=\"cell\" data-label=\"Depth\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/www.bclaws.gov.bc.ca\/civix\/document\/id\/complete\/statreg\/8_2019\" data-ssr-src rel=\"noopener\">B.C. Reg. 8\/2019, Code of Practice for Agricultural Environmental Management (BC Laws)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"ca-bc-aem-code-phosphorus-test\" data-c=\"British Columbia\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Anyone who applies nutrient sources to land for an agricultural operation on a land base not zoned for residential purposes. Nutrient sources include commercial fertilizers, agricultural by-products such as manure, compost and other listed materials. The soil in each field is tested.<\/dd><\/div><div><dt>Outside the rule<\/dt><dd>Operations with an agricultural land base under 2 ha, crops intentionally flooded for harvest, and peat or muck soils.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>Available P. Results by any method other than the Kelowna method are converted to their Kelowna equivalent.<\/dd><\/div><div><dt>Field identifiers<\/dt><dd>Records for each field: its location and size, and the soil test results (land bases of 2 ha or more).<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Code of Practice for Agricultural Environmental Management, B.C. Reg. 8\/2019, under the Environmental Management Act (consolidation current to October 27, 2026), Sections 51(2), 53 and 55<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.bclaws.gov.bc.ca\/civix\/document\/id\/complete\/statreg\/8_2019\" data-ssr-src rel=\"noopener\">B.C. Reg. 8\/2019, Code of Practice for Agricultural Environmental Management (BC Laws)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/canada\/#rule-ca-bc-aem-code-phosphorus-test\">The exact wording, in the source language, on the Canada page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-ca-bc-aem-code-post-harvest-nitrate-test\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"CA\" data-r=\"CA-BC\" data-p=\"n\" data-s=\"conditional\" data-m=\"representative\" data-q=\"canada | british columbia | code of practice for agricultural environmental management | post-harvest soil nitrate test | code of practice for agricultural environmental management, b.c. reg. 8\/2019, under the environmental management act (consolidation current to october 27, 2026) | sections 51(2), 53 and 54 | nitrogen | british columbia | b.c. | canada | aemcop | code of practice for agricultural environmental management | phnt | post-harvest nitrate test\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">British Columbia<\/span><span class=\"ssr-sub\">Canada<\/span><span class=\"ssr-sub\">British Columbia only. Other provinces have their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Post-harvest soil nitrate test<\/span><span class=\"ssr-sub\">Code of Practice for Agricultural Environmental Management<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> At least once every 3 years; again the following year when the result is 100 kg N\/ha or more<\/li><li><span class=\"k\">Season<\/span> For a post-harvest nitrate test: after the last harvest of the growing season, before the autumn rains typically begin<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">A representative sample, or an equivalent test that gives representative results.<\/td><td role=\"cell\" data-label=\"Depth\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/www.bclaws.gov.bc.ca\/civix\/document\/id\/complete\/statreg\/8_2019\" data-ssr-src rel=\"noopener\">B.C. Reg. 8\/2019, Code of Practice for Agricultural Environmental Management (BC Laws)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"ca-bc-aem-code-post-harvest-nitrate-test\" data-c=\"British Columbia\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Anyone who applies nutrient sources to land for an agricultural operation on a land base not zoned for residential purposes. Nutrient sources include commercial fertilizers, agricultural by-products such as manure, compost and other listed materials. The soil in each field is tested.<\/dd><\/div><div><dt>Outside the rule<\/dt><dd>Operations with an agricultural land base under 2 ha, crops intentionally flooded for harvest, and peat or muck soils.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>A post-harvest nitrate test, or an equivalent test, measuring nitrate-N left in the soil by the last crop.<\/dd><\/div><div><dt>Field identifiers<\/dt><dd>Records for each field: its location and size, and the soil test results (land bases of 2 ha or more).<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Code of Practice for Agricultural Environmental Management, B.C. Reg. 8\/2019, under the Environmental Management Act (consolidation current to October 27, 2026), Sections 51(2), 53 and 54<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.bclaws.gov.bc.ca\/civix\/document\/id\/complete\/statreg\/8_2019\" data-ssr-src rel=\"noopener\">B.C. Reg. 8\/2019, Code of Practice for Agricultural Environmental Management (BC Laws)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/canada\/#rule-ca-bc-aem-code-post-harvest-nitrate-test\">The exact wording, in the source language, on the Canada page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-ca-bc-agriculture-basic-soil-fertility-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"CA\" data-r=\"CA-BC\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"zone\" data-q=\"canada | british columbia | bc ministry of agriculture and food soil sampling advice | basic soil fertility test (ph, p, k) | government of british columbia, soil nutrient testing: soil sampling guidelines, timing and depth, methods and tools | ph, p, k, mg | british columbia | b.c. | canada | aemcop | code of practice for agricultural environmental management | phnt | post-harvest nitrate test\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">British Columbia<\/span><span class=\"ssr-sub\">Canada<\/span><span class=\"ssr-sub\">British Columbia only. Other provinces have their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Basic soil fertility test (pH, P, K)<\/span><span class=\"ssr-sub\">BC Ministry of Agriculture and Food soil sampling advice<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> Every 1 to 3 years<\/li><li><span class=\"k\">Season<\/span> Before planting or before the spring growing season; fall where spring sampling is not practical<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">Sampling zones of up to 10 ha (25 acres)<\/td><td role=\"cell\" data-label=\"Method\">Composite sample from each sampling zone of uniform soils, cropping and management; random locations across the zone.<\/td><td role=\"cell\" data-label=\"Depth\">Surface to 15 cm (6 inches)<\/td><td role=\"cell\" data-label=\"Cores\">15 to 20 samples at random locations for most field crops; 30 to 40 where band locations are unknown<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/www2.gov.bc.ca\/gov\/content\/industry\/agriculture-seafood\/agricultural-land-and-environment\/soil-nutrients\/nutrient-management\/what-to-apply\/soil-nutrient-testing\/soil-sampling-guidelines\" data-ssr-src rel=\"noopener\">gov.bc.ca, Soil sampling guidelines<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"ca-bc-agriculture-basic-soil-fertility-sampling\" data-c=\"British Columbia\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for British Columbia farms from the provincial agriculture ministry. Not law.<\/dd><\/div><div><dt>Field identifiers<\/dt><dd>A unique name or number for each sampling zone, kept with past results.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Government of British Columbia, Soil nutrient testing: soil sampling guidelines, timing and depth, methods and tools<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www2.gov.bc.ca\/gov\/content\/industry\/agriculture-seafood\/agricultural-land-and-environment\/soil-nutrients\/nutrient-management\/what-to-apply\/soil-nutrient-testing\/soil-sampling-guidelines\" data-ssr-src rel=\"noopener\">gov.bc.ca, Soil sampling guidelines<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><li><a href=\"https:\/\/www2.gov.bc.ca\/gov\/content\/industry\/agriculture-seafood\/agricultural-land-and-environment\/soil-nutrients\/nutrient-management\/what-to-apply\/soil-nutrient-testing\/sample-timing-and-depth\" data-ssr-src rel=\"noopener\">gov.bc.ca, Sample timing and depth<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><li><a href=\"https:\/\/www2.gov.bc.ca\/gov\/content\/industry\/agriculture-seafood\/agricultural-land-and-environment\/soil-nutrients\/nutrient-management\/what-to-apply\/soil-nutrient-testing\/soil-sampling-methods-tools\" data-ssr-src rel=\"noopener\">gov.bc.ca, Soil sampling methods and tools<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/canada\/#rule-ca-bc-agriculture-basic-soil-fertility-sampling\">The exact wording, in the source language, on the Canada page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-ca-bc-agriculture-post-harvest-nitrate-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"CA\" data-r=\"CA-BC\" data-p=\"n\" data-s=\"official_guidance\" data-m=\"zone\" data-q=\"canada | british columbia | bc ministry of agriculture and food post-harvest nitrate test advice | post-harvest nitrate test sampling | government of british columbia, soil nutrient testing: sample timing and depth, methods and tools | nitrogen | british columbia | b.c. | canada | aemcop | code of practice for agricultural environmental management | phnt | post-harvest nitrate test\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">British Columbia<\/span><span class=\"ssr-sub\">Canada<\/span><span class=\"ssr-sub\">British Columbia only. Other provinces have their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Post-harvest nitrate test sampling<\/span><span class=\"ssr-sub\">BC Ministry of Agriculture and Food post-harvest nitrate test advice<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Season<\/span> After harvest, before 75 mm (coarser soils: sand, loamy sand, sandy loam) or 125 mm (finer soils: loam, clay loam, clay) of cumulative precipitation counted from September 1. Late samples go to 60 cm.<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">Composite sample from each sampling zone. Nitrate zones have no size limit where soils, cropping and management do not differ.<\/td><td role=\"cell\" data-label=\"Depth\">0 to 30 cm (12 inches). 0 to 60 cm (24 inches) when the 30 cm date is missed.<\/td><td role=\"cell\" data-label=\"Cores\">15 to 20 samples at random locations for most field crops; 30 to 40 where band locations are unknown<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/www2.gov.bc.ca\/gov\/content\/industry\/agriculture-seafood\/agricultural-land-and-environment\/soil-nutrients\/nutrient-management\/what-to-apply\/soil-nutrient-testing\/sample-timing-and-depth\" data-ssr-src rel=\"noopener\">gov.bc.ca, Sample timing and depth<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"ca-bc-agriculture-post-harvest-nitrate-sampling\" data-c=\"British Columbia\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for British Columbia farms from the provincial agriculture ministry, for the post-harvest nitrate test the Code requires. Not law.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Government of British Columbia, Soil nutrient testing: sample timing and depth, methods and tools<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www2.gov.bc.ca\/gov\/content\/industry\/agriculture-seafood\/agricultural-land-and-environment\/soil-nutrients\/nutrient-management\/what-to-apply\/soil-nutrient-testing\/sample-timing-and-depth\" data-ssr-src rel=\"noopener\">gov.bc.ca, Sample timing and depth<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><li><a href=\"https:\/\/www2.gov.bc.ca\/gov\/content\/industry\/agriculture-seafood\/agricultural-land-and-environment\/soil-nutrients\/nutrient-management\/what-to-apply\/soil-nutrient-testing\/soil-sampling-methods-tools\" data-ssr-src rel=\"noopener\">gov.bc.ca, Soil sampling methods and tools<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><li><a href=\"https:\/\/www2.gov.bc.ca\/gov\/content\/industry\/agriculture-seafood\/agricultural-land-and-environment\/soil-nutrients\/nutrient-management\/what-to-apply\/soil-nutrient-testing\/post-harvest-nitrate-testing\" data-ssr-src rel=\"noopener\">gov.bc.ca, Post-harvest nitrate testing<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/canada\/#rule-ca-bc-agriculture-post-harvest-nitrate-sampling\">The exact wording, in the source language, on the Canada page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-ca-mb-lmmm-reg-42-98-manure-plan\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"CA\" data-r=\"CA-MB\" data-p=\"n\" data-s=\"conditional\" data-m=\"representative\" data-q=\"canada | manitoba | livestock manure and mortalities management regulation: manure management plans | soil nutrient analysis for a manure management plan | livestock manure and mortalities management regulation, m.r. 42\/98, under the environment act (last amendment m.r. 115\/2025) | sections 12(1.4.1), 12.1 and 13 | nitrogen | manitoba | canada | manure management plan | livestock manure and mortalities management regulation | olsen\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Manitoba<\/span><span class=\"ssr-sub\">Canada<\/span><span class=\"ssr-sub\">Manitoba only. Other provinces have their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil nutrient analysis for a manure management plan<\/span><span class=\"ssr-sub\">Livestock Manure and Mortalities Management Regulation: manure management plans<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">For the residual nitrate limits, sampling follows guidelines published or approved by the Manitoba Department of Agriculture.<\/td><td role=\"cell\" data-label=\"Depth\">The director may refuse a plan whose soil nutrient analysis reports rest on samples taken to less than 0.6 m (2 feet). Soil test phosphorus is read in the top 0.15 m (6 inches).<\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/web2.gov.mb.ca\/laws\/regs\/current\/_pdf-regs.php?reg=42\/98\" data-ssr-src rel=\"noopener\">M.R. 42\/98, consolidated text current from 12 December 2025<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"ca-mb-lmmm-reg-42-98-manure-plan\" data-c=\"Manitoba\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Operators of agricultural operations with 300 animal units or more, and smaller operations the director notifies in writing. A manure management plan is submitted for registration before manure is applied for each growing season, and the director may refuse a plan whose soil nutrient analysis reports do not meet the depth and method rules.<\/dd><\/div><div><dt>Outside the rule<\/dt><dd>Operations under 300 animal units, unless they expand to 300 or more, or the director notifies the operator in writing that the plan rule applies.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>The director may refuse a plan whose soil nutrient analysis reports do not rest on analytical procedures acceptable to the director. Soil test phosphorus by the Olsen (sodium bicarbonate) procedure.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Livestock Manure and Mortalities Management Regulation, M.R. 42\/98, under The Environment Act (last amendment M.R. 115\/2025), Sections 12(1.4.1), 12.1 and 13<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/web2.gov.mb.ca\/laws\/regs\/current\/_pdf-regs.php?reg=42\/98\" data-ssr-src rel=\"noopener\">M.R. 42\/98, consolidated text current from 12 December 2025<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><li><a href=\"https:\/\/web2.gov.mb.ca\/laws\/regs\/current\/_pdf-regs.php?reg=62\/2008\" data-ssr-src rel=\"noopener\">Nutrient Management Regulation, M.R. 62\/2008, s. 8(1) definition<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/canada\/#rule-ca-mb-lmmm-reg-42-98-manure-plan\">The exact wording, in the source language, on the Canada page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-ca-mb-soil-fertility-guide-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"CA\" data-r=\"CA-MB\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"grid zone\" data-q=\"canada | manitoba | manitoba soil fertility guide advice | routine soil fertility sampling | manitoba agriculture, soil fertility guide, fertilizer recommendation guidelines | ph, p, k, mg | manitoba | canada | manure management plan | livestock manure and mortalities management regulation | olsen\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Manitoba<\/span><span class=\"ssr-sub\">Canada<\/span><span class=\"ssr-sub\">Manitoba only. Other provinces have their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Routine soil fertility sampling<\/span><span class=\"ssr-sub\">Manitoba Soil Fertility Guide advice<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> Every field sampled and tested every year<\/li><li><span class=\"k\">Season<\/span> Before seeding in spring, or the preceding fall after soils cool<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">Composite random sampling, benchmark sampling, grid sampling or landscape directed (zone) sampling.<\/td><td role=\"cell\" data-label=\"Depth\">Full 24 inches (60.96 cm) for nitrate and sulphate. P, K and micronutrients in the top 6 inches (15.24 cm).<\/td><td role=\"cell\" data-label=\"Cores\">15 to 20 cores per field composite sample (traditional random sampling)<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/www.gov.mb.ca\/agriculture\/crops\/soil-fertility\/soil-fertility-guide\/print,fertilizer-recommendation-guidelines.html\" data-ssr-src rel=\"noopener\">Manitoba Agriculture, Soil Fertility Guide, Fertilizer Recommendation Guidelines<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"ca-mb-soil-fertility-guide-sampling\" data-c=\"Manitoba\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for Manitoba farms from the provincial agriculture department. Not law.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>Nitrate-N and sulphate-S to 24 inches, Olsen (sodium bicarbonate) P and ammonium acetate K in the top 6 inches.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Manitoba Agriculture, Soil Fertility Guide, Fertilizer Recommendation Guidelines<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.gov.mb.ca\/agriculture\/crops\/soil-fertility\/soil-fertility-guide\/print,fertilizer-recommendation-guidelines.html\" data-ssr-src rel=\"noopener\">Manitoba Agriculture, Soil Fertility Guide, Fertilizer Recommendation Guidelines<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/canada\/#rule-ca-mb-soil-fertility-guide-sampling\">The exact wording, in the source language, on the Canada page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-ca-nl-ffa-soil-sampling-guide\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"CA\" data-r=\"CA-NL\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"pattern\" data-q=\"canada | newfoundland and labrador | provincial soil, plant and feed laboratory sampling advice | routine soil fertility sampling | department of fisheries, forestry and agriculture, soil sampling guide (guide_st 25\/05) | ph, p, k, mg | newfoundland | labrador | newfoundland and labrador | canada | terre-neuve\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Newfoundland and Labrador<\/span><span class=\"ssr-sub\">Canada<\/span><span class=\"ssr-sub\">Newfoundland and Labrador only. Other provinces have their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Routine soil fertility sampling<\/span><span class=\"ssr-sub\">Provincial Soil, Plant and Feed Laboratory sampling advice<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> Every year for a field in rotation; every 2 years when growing the same crop<\/li><li><span class=\"k\">Season<\/span> Any time; fall sampling returns results in time for the next planting, early fall for fall liming<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">One sample per 5 ha<\/td><td role=\"cell\" data-label=\"Method\">Walk a W pattern across each uniform field; sample different areas separately.<\/td><td role=\"cell\" data-label=\"Depth\">20 cm; 6 cm for sod crops (depths given in the shovel directions).<\/td><td role=\"cell\" data-label=\"Cores\">10 individual samples per field of 5 ha or less<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/www.gov.nl.ca\/fisheries\/files\/Soil-Sampling-Guide-June-2025.pdf\" data-ssr-src rel=\"noopener\">Government of Newfoundland and Labrador, Soil Sampling Guide (PDF, June 2025)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"ca-nl-ffa-soil-sampling-guide\" data-c=\"Newfoundland and Labrador\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for Newfoundland and Labrador farms from the provincial agriculture department and its soil laboratory. Not law.<\/dd><\/div><div><dt>Field identifiers<\/dt><dd>A number for each field, the same as in previous soil test submissions.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Department of Fisheries, Forestry and Agriculture, Soil Sampling Guide (GUIDE_ST 25\/05)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.gov.nl.ca\/fisheries\/files\/Soil-Sampling-Guide-June-2025.pdf\" data-ssr-src rel=\"noopener\">Government of Newfoundland and Labrador, Soil Sampling Guide (PDF, June 2025)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/canada\/#rule-ca-nl-ffa-soil-sampling-guide\">The exact wording, in the source language, on the Canada page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-ca-ns-perennia-how-to-take-a-soil-sample\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"CA\" data-r=\"CA-NS\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"pattern grid\" data-q=\"canada | nova scotia | perennia soil sampling advice | routine soil fertility sampling | perennia food and agriculture corporation, how to take a soil sample? (fact sheet, 2026) | ph, p, k, mg | nova scotia | canada | perennia | nouvelle-ecosse | nouvelle-\u00e9cosse\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Nova Scotia<\/span><span class=\"ssr-sub\">Canada<\/span><span class=\"ssr-sub\">Nova Scotia only. Other provinces have their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Routine soil fertility sampling<\/span><span class=\"ssr-sub\">Perennia soil sampling advice<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> Every 2 to 3 years for most crops<\/li><li><span class=\"k\">Season<\/span> Any time of year, at the same time each year; often in fall right after harvest<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">One composite per field or sampling block, cores on a zig-zag. Grid sampling for a more detailed picture.<\/td><td role=\"cell\" data-label=\"Depth\">15 cm in a ploughed field, 8 cm in pasture. Other depths may be used for some crops or sampling goals.<\/td><td role=\"cell\" data-label=\"Cores\">At least 15 to 20 samples per field<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/www.perennia.ca\/wp-content\/uploads\/2026\/05\/01-How-to-Take-a-Soil-Sample.pdf\" data-ssr-src rel=\"noopener\">Perennia, How to Take a Soil Sample? (PDF, 2026)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"ca-ns-perennia-how-to-take-a-soil-sample\" data-c=\"Nova Scotia\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for Nova Scotia farms from the provincial agriculture development agency. Not law.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>For fertility, at minimum pH, macronutrients, micronutrients, base saturation, cation exchange capacity and organic matter.<\/dd><\/div><div><dt>Field identifiers<\/dt><dd>A unique ID for each field or block, kept on a farm map as a record.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Perennia Food and Agriculture Corporation, How to Take a Soil Sample? (fact sheet, 2026)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.perennia.ca\/wp-content\/uploads\/2026\/05\/01-How-to-Take-a-Soil-Sample.pdf\" data-ssr-src rel=\"noopener\">Perennia, How to Take a Soil Sample? (PDF, 2026)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/canada\/#rule-ca-ns-perennia-how-to-take-a-soil-sample\">The exact wording, in the source language, on the Canada page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-ca-on-o-reg-267-03-nmp-soil-test\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"CA\" data-r=\"CA-ON\" data-p=\"fertility\" data-s=\"conditional\" data-m=\"representative pattern\" data-q=\"canada | ontario | nutrient management act, 2002: nutrient management plans for land receiving manure or anaerobic digestion output | soil test for a nutrient management plan | o. reg. 267\/03 (general) under the nutrient management act, 2002, with the sampling and analysis protocol (version july 1, 2021) it incorporates | section 91; sampling and analysis protocol sections 1.3.1.1 and 2.1 | ph, p, k, mg | ontario | canada | omafa | omafra | nutrient management act | o. reg. 267\/03 | nmp\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Ontario<\/span><span class=\"ssr-sub\">Canada<\/span><span class=\"ssr-sub\">Ontario only. Other provinces have their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil test for a nutrient management plan<\/span><span class=\"ssr-sub\">Nutrient Management Act, 2002: nutrient management plans for land receiving manure or anaerobic digestion output<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> A sample while preparing each plan after the first. A plan ceases to be in force on its fifth anniversary, so at least once in each 5 year period.<\/li><li><span class=\"k\">Result valid<\/span> P and pH tested within the 5 years before nutrients are applied<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">Normally at most 10 ha (25 acres) per sample. Up to 20 ha (50 acres) may be permitted where there is evidence that nutrient content is uniform (within 15 percent of the mean) and management is uniform.<\/td><td role=\"cell\" data-label=\"Method\">Representative composite from each field or section. Zig-zag traverse with random cores; separate samples for parts that differ markedly.<\/td><td role=\"cell\" data-label=\"Depth\">About 15 cm (6 inches), the depth normally tilled, also where no tillage is used. Soil nitrate samples 30 cm (12 inches).<\/td><td role=\"cell\" data-label=\"Cores\">At least 20 sub-samples under 5 ha (12.5 acres), plus at least 2 more for each additional hectare.<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/www.ontario.ca\/laws\/regulation\/030267\" data-ssr-src rel=\"noopener\">O. Reg. 267\/03, General (e-Laws consolidation from April 1, 2024)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"ca-on-o-reg-267-03-nmp-soil-test\" data-c=\"Ontario\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Anyone required to have a nutrient management plan for an operation that applies manure or anaerobic digestion output to land. A sample from each field, or each part of the land the plan deals with separately, is collected while preparing the plan.<\/dd><\/div><div><dt>Outside the rule<\/dt><dd>For the first plan of an operation, set default soil concentrations (101 mg\/L P, 251 mg\/L K) may be used instead of a sample.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>A laboratory accredited for that purpose by the Ministry of Agriculture, Food and Rural Affairs (the name in the regulation). Soil pH, buffer pH when pH is below 6.0, sodium bicarbonate P and ammonium acetate K.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>O. Reg. 267\/03 (General) under the Nutrient Management Act, 2002, with the Sampling and Analysis Protocol (version July 1, 2021) it incorporates, Section 91; Sampling and Analysis Protocol sections 1.3.1.1 and 2.1<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.ontario.ca\/laws\/regulation\/030267\" data-ssr-src rel=\"noopener\">O. Reg. 267\/03, General (e-Laws consolidation from April 1, 2024)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><li><a href=\"https:\/\/www.ontario.ca\/document\/sampling-and-analysis-protocol\" data-ssr-src rel=\"noopener\">Sampling and Analysis Protocol, introduction (version July 1, 2021)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><li><a href=\"https:\/\/www.ontario.ca\/document\/sampling-and-analysis-protocol\/sampling-methods\" data-ssr-src rel=\"noopener\">Sampling and Analysis Protocol, 2.1 Soils in-situ<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/canada\/#rule-ca-on-o-reg-267-03-nmp-soil-test\">The exact wording, in the source language, on the Canada page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-ca-on-omafa-soil-sampling-guidance\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"CA\" data-r=\"CA-ON\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"pattern grid\" data-q=\"canada | ontario | omafa soil sampling and analysis advice | routine soil fertility sampling | ontario ministry of agriculture, food and agribusiness, soil sampling and analysis: managing crop nutrients | ph, p, k, mg | ontario | canada | omafa | omafra | nutrient management act | o. reg. 267\/03 | nmp\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Ontario<\/span><span class=\"ssr-sub\">Canada<\/span><span class=\"ssr-sub\">Ontario only. Other provinces have their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Routine soil fertility sampling<\/span><span class=\"ssr-sub\">OMAFA soil sampling and analysis advice<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> Once every 3 years is adequate for most farms; more often on coarse soils or high potassium removal crops<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">At most 10 ha (25 acres) per sample<\/td><td role=\"cell\" data-label=\"Method\">Random cores on a zig-zag across uniform sampling areas. Precision, site specific or grid sampling allowed, not required.<\/td><td role=\"cell\" data-label=\"Depth\">About 15 cm (6 inches) for nutrients, unchanged under no-till. Nitrate 30 cm (1 ft). Under no-till with surface-applied nitrogen, a separate 5 cm (2 inches) sample checks surface pH only, not nutrients.<\/td><td role=\"cell\" data-label=\"Cores\">At least 20 cores, plus one per 0.4 ha (1 acre) in fields over 8 ha (20 acres)<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/www.ontario.ca\/page\/soil-sampling-and-analysis-managing-crop-nutrients\" data-ssr-src rel=\"noopener\">Ontario.ca, Soil sampling and analysis: managing crop nutrients<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"ca-on-omafa-soil-sampling-guidance\" data-c=\"Ontario\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for Ontario farms from the provincial agriculture ministry. Not law.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>For a nutrient management plan, an OMAFA-accredited lab using OMAFA-accredited tests.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Ontario Ministry of Agriculture, Food and Agribusiness, Soil sampling and analysis: managing crop nutrients<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.ontario.ca\/page\/soil-sampling-and-analysis-managing-crop-nutrients\" data-ssr-src rel=\"noopener\">Ontario.ca, Soil sampling and analysis: managing crop nutrients<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/canada\/#rule-ca-on-omafa-soil-sampling-guidance\">The exact wording, in the source language, on the Canada page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-ca-sk-agriculture-fall-soil-testing\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"CA\" data-r=\"CA-SK\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"zone\" data-q=\"canada | saskatchewan | saskatchewan ministry of agriculture crops extension advice | fall soil testing for next season fertility | saskatchewan ministry of agriculture, sask ag now: soil testing for this fall (september 2026) | ph, p, k, mg | saskatchewan | sask | canada | sask ag now\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Saskatchewan<\/span><span class=\"ssr-sub\">Canada<\/span><span class=\"ssr-sub\">Saskatchewan only. Other provinces have their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Fall soil testing for next season fertility<\/span><span class=\"ssr-sub\">Saskatchewan Ministry of Agriculture crops extension advice<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Season<\/span> Fall, once soil temperature is below 10 degrees C<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">Cores from several locations in each management zone; unusual areas avoided or sampled separately.<\/td><td role=\"cell\" data-label=\"Depth\">To a depth of 6 to 12 inches (15.24 to 30.48 cm)<\/td><td role=\"cell\" data-label=\"Cores\">Typically 15 to 20 cores per management zone<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/www.saskatchewan.ca\/business\/agriculture-natural-resources-and-industry\/agribusiness-farmers-and-ranchers\/sask-ag-now\/crops\/soil-testing-for-this-fall\" data-ssr-src rel=\"noopener\">saskatchewan.ca, Sask Ag Now: Soil Testing for this Fall<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"ca-sk-agriculture-fall-soil-testing\" data-c=\"Saskatchewan\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for Saskatchewan farms from the provincial agriculture ministry. Not law.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Saskatchewan Ministry of Agriculture, Sask Ag Now: Soil Testing for this Fall (September 2026)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.saskatchewan.ca\/business\/agriculture-natural-resources-and-industry\/agribusiness-farmers-and-ranchers\/sask-ag-now\/crops\/soil-testing-for-this-fall\" data-ssr-src rel=\"noopener\">saskatchewan.ca, Sask Ag Now: Soil Testing for this Fall<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/canada\/#rule-ca-sk-agriculture-fall-soil-testing\">The exact wording, in the source language, on the Canada page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody class=\"ssr-grp\" data-g=\"DK\" role=\"rowgroup\"><tr role=\"row\"><th role=\"rowheader\" colspan=\"8\" scope=\"colgroup\" id=\"country-dk\">Denmark <a class=\"ssr-grp-link\" href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/denmark\/\">Exact wording for Denmark<\/a><\/th><\/tr><\/tbody>\n<tbody id=\"rule-dk-bek-655-2026-raised-phosphorus-ceiling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"DK\" data-r=\"\" data-p=\"p\" data-s=\"conditional\" data-m=\"none\" data-q=\"denmark | fertiliser use rules for farm businesses, raised phosphorus ceiling for low p numbers (planning period 2026\/2027) | soil p numbers (olsen p) to raise the phosphorus ceiling | bek nr 931 af 16\/07\/2024 om jordbrugsvirksomheders anvendelse af g\u00f8dning, as amended by bek nr 655 af 08\/07\/2026 | \u00a7 20 e (planning period 2026\/2027; \u00a7 19 for earlier periods) | phosphorus | danmark | denmark | g\u00f8dningsanvendelsesbekendtg\u00f8relsen | fosforloft | h\u00e6vet fosforloft | fosfortal | pt | olsen p | jordpr\u00f8ver | harmoniareal\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Denmark<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil P numbers (Olsen P) to raise the phosphorus ceiling<\/span><span class=\"ssr-sub\">Fertiliser use rules for farm businesses, raised phosphorus ceiling for low P numbers (planning period 2026\/2027)<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Result valid<\/span> No more than 5 years old at the start of the planning period in which the ceiling is raised<\/li><li><span class=\"k\">Season<\/span> The farm average uses the latest sampling on each field, taken by 31 July in the current planning period<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">At least one soil sample per started 5 ha of harmony area on JB 1 to 10, and at least one per field<\/td><td role=\"cell\" data-label=\"Method\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Depth\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/www.retsinformation.dk\/eli\/lta\/2026\/655\/pdf\" data-ssr-src rel=\"noopener\">BEK nr 655 af 08\/07\/2026, amending order (Lovtidende A, PDF)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"dk-bek-655-2026-raised-phosphorus-ceiling\" data-c=\"Denmark\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Farm businesses that want to raise their phosphorus ceiling because the average P number (Pt) on their harmony area on soil types JB 1 to 10 is below 4.0. P numbers must exist for all of that area.<\/dd><\/div><div><dt>Outside the rule<\/dt><dd>Fields on soil types JB 11 and 12 are outside the sample count; the raise is scaled down by their share of the harmony area.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>A laboratory with a quality management system to EN ISO\/IEC 17025 or an equivalent international standard. Phosphorus by the Olsen P method.<\/dd><\/div><div><dt>Field identifiers<\/dt><dd>Sampling positions drawn on a field map, with an unambiguous link between each position and the result on the certificate. Both shown on request at inspection.<\/dd><\/div><div><dt>In force from<\/dt><dd>1 August 2026<\/dd><\/div><div><dt>Legal text<\/dt><dd>BEK nr 931 af 16\/07\/2024 om jordbrugsvirksomheders anvendelse af g\u00f8dning, as amended by BEK nr 655 af 08\/07\/2026, \u00a7 20 e (planning period 2026\/2027; \u00a7 19 for earlier periods)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.retsinformation.dk\/eli\/lta\/2026\/655\/pdf\" data-ssr-src rel=\"noopener\">BEK nr 655 af 08\/07\/2026, amending order (Lovtidende A, PDF)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><li><a href=\"https:\/\/www.retsinformation.dk\/eli\/lta\/2024\/931\/pdf\" data-ssr-src rel=\"noopener\">BEK nr 931 af 16\/07\/2024, g\u00f8dningsanvendelsesbekendtg\u00f8relsen (PDF)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/denmark\/#rule-dk-bek-655-2026-raised-phosphorus-ceiling\">The exact wording, in the source language, on the Denmark page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody class=\"ssr-grp\" data-g=\"FR\" role=\"rowgroup\"><tr role=\"row\"><th role=\"rowheader\" colspan=\"8\" scope=\"colgroup\" id=\"country-fr\">France <a class=\"ssr-grp-link\" href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/france\/\">Exact wording for France<\/a><\/th><\/tr><\/tbody>\n<tbody id=\"rule-fr-pan-nitrates-annual-soil-analysis\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"FR\" data-r=\"\" data-p=\"n\" data-s=\"conditional\" data-m=\"representative\" data-q=\"france | nitrates directive national action programme (programme d'actions national), vulnerable zones | annual soil nitrogen or organic matter analysis | arr\u00eat\u00e9 du 19 d\u00e9cembre 2011 relatif au programme d'actions national \u00e0 mettre en oeuvre dans les zones vuln\u00e9rables, as amended | annex i, iii, 1\u00b0, soil nitrogen supply (reliquat d'azote min\u00e9ral) | nitrogen | france | zone vuln\u00e9rable | zone vulnerable | zones vuln\u00e9rables | directive nitrates | programme d'actions national | reliquat azot\u00e9 | reliquat azote | reliquat sortie hiver | rsh | plan pr\u00e9visionnel de fumure | plan de fumure | analyse de sol\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">France<\/span><span class=\"ssr-sub\">National rule for nitrate vulnerable zones. Each regional action programme sets the sampling protocol.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Annual soil nitrogen or organic matter analysis<\/span><span class=\"ssr-sub\">Nitrates Directive national action programme (programme d&#8217;actions national), vulnerable zones<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> Every cropping season, at least one analysis<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">At least one field (\u00eelot cultural) for one of the three main crops grown in the vulnerable zone. The regional prefectoral order sets the protocol, including minimum depths and the number of horizons by soil type.<\/td><td role=\"cell\" data-label=\"Depth\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/www.legifrance.gouv.fr\/loda\/id\/JORFTEXT000025001662\" data-ssr-src rel=\"noopener\">Arr\u00eat\u00e9 du 19 d\u00e9cembre 2011, programme d&#8217;actions national (L\u00e9gifrance, version in force 30 October 2026)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"fr-pan-nitrates-annual-soil-analysis\" data-c=\"France\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Anyone farming more than 3 ha in a nitrate vulnerable zone.<\/dd><\/div><div><dt>Outside the rule<\/dt><dd>The regional order may let a manure analysis replace the soil analysis, or, on soils unsuited to residue sampling, an estimator (model or tool) for the soil nitrogen stock.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>One of: nitrogen residue at the end of winter, after harvest or at the start of winter; organic matter content; or total nitrogen in the cultivated horizons, as the regional order specifies. An end-of-winter residue result must be used in the planned rate.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Arr\u00eat\u00e9 du 19 d\u00e9cembre 2011 relatif au programme d&#8217;actions national \u00e0 mettre en oeuvre dans les zones vuln\u00e9rables, as amended, Annex I, III, 1\u00b0, soil nitrogen supply (reliquat d&#8217;azote min\u00e9ral)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.legifrance.gouv.fr\/loda\/id\/JORFTEXT000025001662\" data-ssr-src rel=\"noopener\">Arr\u00eat\u00e9 du 19 d\u00e9cembre 2011, programme d&#8217;actions national (L\u00e9gifrance, version in force 30 October 2026)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/france\/#rule-fr-pan-nitrates-annual-soil-analysis\">The exact wording, in the source language, on the France page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody class=\"ssr-grp\" data-g=\"DE\" role=\"rowgroup\"><tr role=\"row\"><th role=\"rowheader\" colspan=\"8\" scope=\"colgroup\" id=\"country-de\">Germany <a class=\"ssr-grp-link\" href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/germany\/\">Exact wording for Germany<\/a><\/th><\/tr><\/tbody>\n<tbody id=\"rule-de-duv-4-4-phosphate\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"DE\" data-r=\"\" data-p=\"p\" data-s=\"conditional\" data-m=\"representative\" data-q=\"germany | d\u00fcngeverordnung (d\u00fcv), fertiliser ordinance | phosphate soil analysis before fertilising | d\u00fcngeverordnung 2017, last amended 11 december 2024 | \u00a7 4(4) sentence 1 no. 2 | phosphorus | deutschland | germany | d\u00fcv | duv | d\u00fcngeverordnung | duengeverordnung | fertiliser ordinance | fertilizer ordinance\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Germany<\/span><span class=\"ssr-sub\">Federal rule. Each federal state sets the sampling protocol.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Phosphate soil analysis before fertilising<\/span><span class=\"ssr-sub\">D\u00fcngeverordnung (D\u00fcV), Fertiliser Ordinance<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> At least every 6 years, per field of 1 ha or more<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">Representative soil samples. Sampling and analysis follow the protocol of the competent body in each federal state.<\/td><td role=\"cell\" data-label=\"Depth\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/www.gesetze-im-internet.de\/d_v_2017\/__4.html\" data-ssr-src rel=\"noopener\">D\u00fcV \u00a7 4<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"de-duv-4-4-phosphate\" data-c=\"Germany\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Farm operators, for every field (Schlag) of 1 ha or more, before substantial nutrient quantities are applied: more than 50 kg N or 30 kg P2O5 per hectare and year.<\/dd><\/div><div><dt>Outside the rule<\/dt><dd>Grazing-only land with up to 100 kg N\/ha a year from livestock manure and no extra N fertiliser (\u00a7 10(3) No. 2).<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>As required by the competent body under federal state law.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>D\u00fcngeverordnung 2017, last amended 11 December 2024, \u00a7 4(4) sentence 1 No. 2<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.gesetze-im-internet.de\/d_v_2017\/__4.html\" data-ssr-src rel=\"noopener\">D\u00fcV \u00a7 4<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><li><a href=\"https:\/\/www.gesetze-im-internet.de\/d_v_2017\/__2.html\" data-ssr-src rel=\"noopener\">D\u00fcV \u00a7 2 (definitions)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><li><a href=\"https:\/\/www.gesetze-im-internet.de\/d_v_2017\/__10.html\" data-ssr-src rel=\"noopener\">D\u00fcV \u00a7 10<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/germany\/#rule-de-duv-4-4-phosphate\">The exact wording, in the source language, on the Germany page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody class=\"ssr-grp\" data-g=\"IE\" role=\"rowgroup\"><tr role=\"row\"><th role=\"rowheader\" colspan=\"8\" scope=\"colgroup\" id=\"country-ie\">Ireland <a class=\"ssr-grp-link\" href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/ireland\/\">Exact wording for Ireland<\/a><\/th><\/tr><\/tbody>\n<tbody id=\"rule-ie-si-588-2025-soil-test\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"IE\" data-r=\"\" data-p=\"p\" data-s=\"conditional\" data-m=\"pattern\" data-q=\"ireland | nitrates regulations, good agricultural practice for protection of waters | soil test for the phosphorus index | s.i. no. 588\/2025, as amended by s.i. no. 119\/2026 | schedule 1 and article 17(4) | phosphorus | eire | \u00e9ire | republic of ireland | nitrates | teagasc\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Ireland<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil test for the phosphorus index<\/span><span class=\"ssr-sub\">Nitrates regulations, Good Agricultural Practice for Protection of Waters<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Result valid<\/span> Under 4 years for P (Index 4 results excepted). 12 years for organic matter.<\/li><li><span class=\"k\">Wait<\/span> P test: 3 months after the last P fertiliser, chemical or organic<\/li><li><span class=\"k\">Wait<\/span> pH test: 2 years after ground limestone<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">4 ha per sample. Up to 5 ha where soil types and cropping were similar for the previous five years.<\/td><td role=\"cell\" data-label=\"Method\">The sampling pattern set out in Schedule 1. Separate samples where soil type, cropping history, slope, drainage or yields differ.<\/td><td role=\"cell\" data-label=\"Depth\">0 to 10 cm<\/td><td role=\"cell\" data-label=\"Cores\">20 cores per sample<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/www.irishstatutebook.ie\/eli\/2025\/si\/588\/made\/en\/print\" data-ssr-src rel=\"noopener\">S.I. No. 588\/2025, Schedule 1 (as made)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"ie-si-588-2025-soil-test\" data-c=\"Ireland\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>All arable land, and holdings with a grassland stocking rate of 130 kg N\/ha or more before export of livestock manure: the previous year, or for new entrants and those changing stocking rate, the actual or projected current year. Until they test, these holdings are assumed to be at P Index 4.<\/dd><\/div><div><dt>Outside the rule<\/dt><dd>Other holdings may test; without a test their soil is deemed to be at P Index 3.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>A laboratory that meets the requirements of the Minister for Agriculture, Food and the Marine. P Index by the Morgan extractable P test; organic matter by loss on ignition; pH in a 1:2 soil:water suspension.<\/dd><\/div><div><dt>Field identifiers<\/dt><dd>Results issued after 14 September 2025 must state the georeference or LPIS parcel number of every field or parcel the sample represents.<\/dd><\/div><div><dt>In force from<\/dt><dd>1 January 2026<\/dd><\/div><div><dt>Legal text<\/dt><dd>S.I. No. 588\/2025, as amended by S.I. No. 119\/2026, Schedule 1 and Article 17(4)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.irishstatutebook.ie\/eli\/2025\/si\/588\/made\/en\/print\" data-ssr-src rel=\"noopener\">S.I. No. 588\/2025, Schedule 1 (as made)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><li><a href=\"https:\/\/www.irishstatutebook.ie\/eli\/2026\/si\/119\/made\/en\/print\" data-ssr-src rel=\"noopener\">S.I. No. 119\/2026, amending Regulations<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/ireland\/#rule-ie-si-588-2025-soil-test\">The exact wording, in the source language, on the Ireland page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-ie-teagasc-soil-sampling-advice\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"IE\" data-r=\"\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"zone\" data-q=\"ireland | teagasc sampling advice | routine soil fertility sampling | teagasc, soil sampling faq | ph, p, k, mg | eire | \u00e9ire | republic of ireland | teagasc\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Ireland<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Routine soil fertility sampling<\/span><span class=\"ssr-sub\">Teagasc sampling advice<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Result valid<\/span> Base fertiliser advice on tests for 4 to 5 years<\/li><li><span class=\"k\">Season<\/span> September to March<\/li><li><span class=\"k\">Wait<\/span> 3 to 6 months after P and K. 2 years after lime.<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">One sample every 2 to 4 ha<\/td><td role=\"cell\" data-label=\"Method\">Divide fields by soil type, cropping history and known growth differences or previous performance.<\/td><td role=\"cell\" data-label=\"Depth\">0 to 10 cm<\/td><td role=\"cell\" data-label=\"Cores\">At least 20 cores per sample<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/teagasc.ie\/crops\/faq\/soil-sampling\/\" data-ssr-src rel=\"noopener\">Teagasc, Soil sampling FAQ<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"ie-teagasc-soil-sampling-advice\" data-c=\"Ireland\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for Irish farms from the state agriculture and food development authority. Not law.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Teagasc, Soil sampling FAQ<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/teagasc.ie\/crops\/faq\/soil-sampling\/\" data-ssr-src rel=\"noopener\">Teagasc, Soil sampling FAQ<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/ireland\/#rule-ie-teagasc-soil-sampling-advice\">The exact wording, in the source language, on the Ireland page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody class=\"ssr-grp\" data-g=\"IT\" role=\"rowgroup\"><tr role=\"row\"><th role=\"rowheader\" colspan=\"8\" scope=\"colgroup\" id=\"country-it\">Italy <a class=\"ssr-grp-link\" href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/italy\/\">Exact wording for Italy<\/a><\/th><\/tr><\/tbody>\n<tbody id=\"rule-it-pie-dpi-2026-soil-analysis\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"IT\" data-r=\"IT-21\" data-p=\"fertility\" data-s=\"conditional\" data-m=\"pattern zone\" data-q=\"italy | piedmont (piemonte) | integrated production standards (disciplinari di produzione integrata 2026): cap intervention sra01 aca1 and the national integrated production quality scheme (sqnpi) | soil analysis for the fertilisation plan in integrated production | regione piemonte, disciplinari di produzione integrata 2026, allegato i fertilizzazione, approved by determinazione dirigenziale n. 256 of 10 march 2026 | allegato i, istruzioni per il campionamento dei terreni e l'interpretazione delle analisi | ph, p, k, mg | italia | piemonte | piedmont | produzione integrata | disciplinari di produzione integrata | dpi | sqnpi | sra01 | aca1 | analisi del terreno\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Piedmont (Piemonte)<\/span><span class=\"ssr-sub\">Italy<\/span><span class=\"ssr-sub\">Piedmont only, and only for farms in integrated production. Each Italian region sets its own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil analysis for the fertilisation plan in integrated production<\/span><span class=\"ssr-sub\">Integrated production standards (Disciplinari di produzione integrata 2026): CAP intervention SRA01 ACA1 and the national integrated production quality scheme (SQNPI)<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Result valid<\/span> 5 years for variable parameters. No limit for texture, total carbonate and pH (unless the pH is corrected).<\/li><li><span class=\"k\">Season<\/span> Field crops: the days after harvest<\/li><li><span class=\"k\">Wait<\/span> Field crops: or at least 2 months after the last fertiliser<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">Generally one sample per 1 ha field, extended or reduced with the uniformity of soil and cropping. At least one per cropping system.<\/td><td role=\"cell\" data-label=\"Method\">Up to 20 sampling points by field size, along the diagonals or at random. More samples where agricultural landscape units differ in soil or management.<\/td><td role=\"cell\" data-label=\"Depth\">Field crops about 30 cm, after removing the top 5 cm. Tree crops: advised to take topsoil (to about 30 cm) and subsoil (to about 60 cm) as separate samples.<\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/www.regione.piemonte.it\/web\/sites\/default\/files\/media\/documenti\/2026-03\/dpi_2026_-_allegato_i_-_fertilizzazione.pdf\" data-ssr-src rel=\"noopener\">Regione Piemonte, DPI 2026, Allegato I Fertilizzazione (PDF)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"it-pie-dpi-2026-soil-analysis\" data-c=\"Piedmont (Piemonte)\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Farms in Piedmont that join integrated production under the CAP intervention SRA01 ACA1, the CAP sectoral interventions for integrated production, or the national integrated production quality scheme (SQNPI). Analyses must be in hand within 12 months of joining and stay valid for the whole commitment. At least one sample per cropping system on the farm.<\/dd><\/div><div><dt>Outside the rule<\/dt><dd>Land that receives no fertiliser, organic or synthetic, in the five years. Mixed farms entering their whole area may skip analysis on less than 3 ha of arable land, extensive vegetables and meadows, and less than 0.5 ha of other crops.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>Texture, pH in water, total carbonate, organic matter, total N, C\/N, CEC, Olsen P (Bray-Kurtz below pH 6.5), exchangeable K, Ca and Mg (Ca and Mg optional above pH 7). Texture and pH may be taken from soil maps of at least 1:50,000. Official Italian soil analysis methods (DM 13 September 1999) or internationally recognised methods.<\/dd><\/div><div><dt>Field identifiers<\/dt><dd>The report must give the cadastral reference or the geographic coordinates of the field sampled.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Regione Piemonte, Disciplinari di produzione integrata 2026, Allegato I Fertilizzazione, approved by Determinazione Dirigenziale n. 256 of 10 March 2026, Allegato I, Istruzioni per il campionamento dei terreni e l&#8217;interpretazione delle analisi<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.regione.piemonte.it\/web\/sites\/default\/files\/media\/documenti\/2026-03\/dpi_2026_-_allegato_i_-_fertilizzazione.pdf\" data-ssr-src rel=\"noopener\">Regione Piemonte, DPI 2026, Allegato I Fertilizzazione (PDF)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><li><a href=\"https:\/\/www.regione.piemonte.it\/web\/temi\/agricoltura\/servizi-fitosanitari-pan\/disciplinari-produzione-integrata-2026\" data-ssr-src rel=\"noopener\">Regione Piemonte, Disciplinari di produzione integrata 2026<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/italy\/#rule-it-pie-dpi-2026-soil-analysis\">The exact wording, in the source language, on the Italy page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody class=\"ssr-grp\" data-g=\"KZ\" role=\"rowgroup\"><tr role=\"row\"><th role=\"rowheader\" colspan=\"8\" scope=\"colgroup\" id=\"country-kz\">Kazakhstan <a class=\"ssr-grp-link\" href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/kazakhstan\/\">Exact wording for Kazakhstan<\/a><\/th><\/tr><\/tbody>\n<tbody id=\"rule-kz-agrochemical-survey-rules-2015\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"KZ\" data-r=\"\" data-p=\"fertility\" data-s=\"conditional\" data-m=\"grid\" data-q=\"kazakhstan | agrochemical survey of soils (\u0430\u0433\u0440\u043e\u0445\u0438\u043c\u0438\u0447\u0435\u0441\u043a\u043e\u0435 \u043e\u0431\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u043d\u0438\u0435 \u043f\u043e\u0447\u0432) by the state agrochemical service | state agrochemical survey of arable land | rules for the agrochemical survey of soils, order of the acting minister of agriculture no. 4-1\/147 of 27 february 2015 (registered no. 10686); law on soil protection no. 341-viii of 8 july 2026; law no. 342-viii of 8 july 2026 (amending the law on state regulation of the agro-industrial complex) | rules, paragraphs 1, 2, 6, 7 and 12 to 16, annex 3; law on soil protection, articles 11 and 13; law no. 342-viii, article 1(6) | ph, p, k, mg | \u043a\u0430\u0437\u0430\u0445\u0441\u0442\u0430\u043d | \u049b\u0430\u0437\u0430\u049b\u0441\u0442\u0430\u043d | qazaqstan | kazakstan | kazakhstan | \u0440\u0435\u0441\u043f\u0443\u0431\u043b\u0438\u043a\u0430 \u043a\u0430\u0437\u0430\u0445\u0441\u0442\u0430\u043d | \u0430\u0433\u0440\u043e\u0445\u0438\u043c\u0438\u0447\u0435\u0441\u043a\u043e\u0435 \u043e\u0431\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u043d\u0438\u0435 | \u0430\u0433\u0440\u043e\u0445\u0438\u043c\u0438\u0447\u0435\u0441\u043a\u0430\u044f \u043a\u0430\u0440\u0442\u043e\u0433\u0440\u0430\u043c\u043c\u0430 | \u043a\u0430\u0440\u0442\u043e\u0433\u0440\u0430\u043c\u043c\u0430 | \u0430\u0433\u0440\u043e\u0445\u0438\u043c\u0441\u043b\u0443\u0436\u0431\u0430\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Kazakhstan<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">State agrochemical survey of arable land<\/span><span class=\"ssr-sub\">Agrochemical survey of soils (\u0430\u0433\u0440\u043e\u0445\u0438\u043c\u0438\u0447\u0435\u0441\u043a\u043e\u0435 \u043e\u0431\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u043d\u0438\u0435 \u043f\u043e\u0447\u0432) by the state agrochemical service<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> Rainfed land every 7 years. Irrigated land, and farms using chemical ameliorants, every 5 years. State variety plots and experimental farms every 3 years. Owners and land users may ask for shorter intervals.<\/li><li><span class=\"k\">Season<\/span> Non-irrigated fields with low mineral fertiliser use: throughout the growing season<\/li><li><span class=\"k\">Season<\/span> Irrigated land with systematic mineral fertiliser use of up to 90 kg\/ha of active ingredient: throughout the growing season<\/li><li><span class=\"k\">Wait<\/span> Irrigated land with systematic mineral fertiliser use of more than 90 kg\/ha of active ingredient: in spring before fertilising, or 2 months or more after it<\/li><li><span class=\"k\">Season<\/span> Flood irrigation or flooded rice checks: before flooding, or after the water is drained and the crop is harvested<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">One composite sample per elementary plot. Elementary plot at most 75 ha, or at most 10 ha on irrigated land.<\/td><td role=\"cell\" data-label=\"Method\">A grid of elementary plots. On rainfed land the grid follows the soil cover and the position in the relief. Sampling density, set by the plot size, follows the variability of the soil cover and the fertiliser rates.<\/td><td role=\"cell\" data-label=\"Depth\">Plough layer 0 to 20 cm, taking the humus horizon into account<\/td><td role=\"cell\" data-label=\"Cores\">20 to 25 point samples per composite sample, on all soil types. Each composite sample weighs at least 500 g.<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/adilet.zan.kz\/rus\/docs\/V1500010686\" data-ssr-src rel=\"noopener\">Rules for the agrochemical survey of soils, Order No. 4-1\/147 (Adilet)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"kz-agrochemical-survey-rules-2015\" data-c=\"Kazakhstan\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Arable land (\u043f\u0430\u0448\u043d\u044f). The Rules set how the state agrochemical service surveys it: under annual plans at budget cost, or for a fee at the request of the owner or land user. Owners and land users must give access for the survey. The Rules were made under subparagraph 21) of Article 6(1) of the Law On State Regulation of the Agro-Industrial Complex, which Law No. 342-VIII of 8 July 2026 removed.<\/dd><\/div><div><dt>Outside the rule<\/dt><dd>Hay meadows and pastures sown with preliminary crops for up to three years after ploughing for improvement, and orchard inter-rows used for sowing, are not arable land under the Rules.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>Analyses follow the state standards and methods in Annex 3 of the Rules, for example mobile P and K by Machigin (carbonate soils, GOST 26205-91) or Chirikov (non-carbonate soils, GOST 26204-91). The 2026 Law On Soil Protection assigns soil protection surveys to a republican state enterprise; agrochemical surveys may also be done by accredited laboratories. Results go into the agrochemical data bank.<\/dd><\/div><div><dt>Field identifiers<\/dt><dd>Each elementary plot gets a sequence number. On the base map, plot boundaries must match those of the previous survey, using satellite navigation coordinates.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Rules for the agrochemical survey of soils, Order of the Acting Minister of Agriculture No. 4-1\/147 of 27 February 2015 (registered No. 10686); Law On Soil Protection No. 341-VIII of 8 July 2026; Law No. 342-VIII of 8 July 2026 (amending the Law On State Regulation of the Agro-Industrial Complex), Rules, paragraphs 1, 2, 6, 7 and 12 to 16, Annex 3; Law On Soil Protection, Articles 11 and 13; Law No. 342-VIII, Article 1(6)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/adilet.zan.kz\/rus\/docs\/V1500010686\" data-ssr-src rel=\"noopener\">Rules for the agrochemical survey of soils, Order No. 4-1\/147 (Adilet)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><li><a href=\"https:\/\/adilet.zan.kz\/rus\/docs\/Z2600000341\" data-ssr-src rel=\"noopener\">Law of the Republic of Kazakhstan On Soil Protection No. 341-VIII (Adilet)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><li><a href=\"https:\/\/adilet.zan.kz\/rus\/docs\/K030000442_\" data-ssr-src rel=\"noopener\">Land Code of the Republic of Kazakhstan, Article 65 (Adilet)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><li><a href=\"https:\/\/adilet.zan.kz\/rus\/docs\/Z2600000342\" data-ssr-src rel=\"noopener\">Law of the Republic of Kazakhstan No. 342-VIII of 8 July 2026 (Adilet)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/kazakhstan\/#rule-kz-agrochemical-survey-rules-2015\">The exact wording, in the source language, on the Kazakhstan page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody class=\"ssr-grp\" data-g=\"NL\" role=\"rowgroup\"><tr role=\"row\"><th role=\"rowheader\" colspan=\"8\" scope=\"colgroup\" id=\"country-nl\">Netherlands <a class=\"ssr-grp-link\" href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/netherlands\/\">Exact wording for Netherlands<\/a><\/th><\/tr><\/tbody>\n<tbody id=\"rule-nl-fosfaatdifferentiatie-own-method\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"NL\" data-r=\"\" data-p=\"p\" data-s=\"conditional\" data-m=\"pattern\" data-q=\"netherlands | phosphate differentiation (fosfaatdifferentiatie), laboratory's own method | phosphate class for the phosphate use norm | uitvoeringsregeling meststoffenwet | article 103a and annex l (bijlage l) | phosphorus | nederland | holland | the netherlands | rvo | fosfaatdifferentiatie | phosphate differentiation\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Netherlands<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Phosphate class for the phosphate use norm<\/span><span class=\"ssr-sub\">Phosphate differentiation (fosfaatdifferentiatie), laboratory&#8217;s own method<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Result valid<\/span> 4 years from the sampling date<\/li><li><span class=\"k\">Wait<\/span> At least 2 months after liming<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">One composite per 5 ha at most. Adjoining parcels of up to 2.5 ha each may be combined up to 5 ha.<\/td><td role=\"cell\" data-label=\"Method\">The accredited sampling organisation&#8217;s own protocol, always based on the W, zig-zag or crosswise method.<\/td><td role=\"cell\" data-label=\"Depth\">Grassland 0 to 10 cm. Arable land 0 to 25 cm.<\/td><td role=\"cell\" data-label=\"Cores\">At least 40 cores per composite<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/wetten.overheid.nl\/BWBR0018989\/\" data-ssr-src rel=\"noopener\">Uitvoeringsregeling Meststoffenwet, art. 103a and Bijlage L<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"nl-fosfaatdifferentiatie-own-method\" data-c=\"Netherlands\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Parcels entered for phosphate differentiation, to claim a phosphate class other than high.<\/dd><\/div><div><dt>Outside the rule<\/dt><dd>Parcels not entered keep the standard class high norm. Sampling is the route to a different class, not a duty on every parcel.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>Sampling and analysis by organisations accredited by the Dutch Accreditation Council to ISO\/IEC 17025. P-CaCl2 and P-Al figures; PAL and Pw no longer accepted from 2025.<\/dd><\/div><div><dt>Field identifiers<\/dt><dd>The analysis report gives, for each parcel, its exact location fixed with GPS data and a diagram or drawing of where the samples were taken.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Uitvoeringsregeling Meststoffenwet, Article 103a and Annex L (Bijlage L)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/wetten.overheid.nl\/BWBR0018989\/\" data-ssr-src rel=\"noopener\">Uitvoeringsregeling Meststoffenwet, art. 103a and Bijlage L<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><li><a href=\"https:\/\/www.rvo.nl\/sites\/default\/files\/2025-01\/20250114_Bemonsteringsprotocol_fosfaattoestand_bepalen.pdf\" data-ssr-src rel=\"noopener\">RVO, Bemonsteringsprotocol fosfaattoestand bepalen (PDF)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><li><a href=\"https:\/\/www.rvo.nl\/onderwerpen\/mest\/gebruiken-en-uitrijden\/gebruiksnormen-gebruiksruimte\/fosfaatdifferentiatie\" data-ssr-src rel=\"noopener\">RVO, Fosfaatdifferentiatie<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/netherlands\/#rule-nl-fosfaatdifferentiatie-own-method\">The exact wording, in the source language, on the Netherlands page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-nl-fosfaatdifferentiatie-stratified\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"NL\" data-r=\"\" data-p=\"p\" data-s=\"conditional\" data-m=\"stratified\" data-q=\"netherlands | phosphate differentiation (fosfaatdifferentiatie), stratified random sample | phosphate class for the phosphate use norm | uitvoeringsregeling meststoffenwet | article 103a and annex l (bijlage l) | phosphorus | nederland | holland | the netherlands | rvo | fosfaatdifferentiatie | phosphate differentiation | gestratificeerde steekproef\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Netherlands<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Phosphate class for the phosphate use norm<\/span><span class=\"ssr-sub\">Phosphate differentiation (fosfaatdifferentiatie), stratified random sample<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Result valid<\/span> 4 years from the sampling date<\/li><li><span class=\"k\">Wait<\/span> At least 2 months after liming<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">Sampling units of at most 20 ha. Parcels cannot be combined.<\/td><td role=\"cell\" data-label=\"Method\">Stratified random sample: a computer splits the parcel into equal, compact blocks, one per sampling point, and picks one random point in each, located by GNSS.<\/td><td role=\"cell\" data-label=\"Depth\">Grassland 0 to 10 cm. Arable land 0 to 25 cm.<\/td><td role=\"cell\" data-label=\"Cores\">By unit size: 1 to 5 ha 25 points; 5 to 10 ha 29 on grassland, 28 on arable; 10 to 20 ha 33 on grassland, 32 on arable.<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/wetten.overheid.nl\/BWBR0018989\/\" data-ssr-src rel=\"noopener\">Uitvoeringsregeling Meststoffenwet, art. 103a and Bijlage L<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"nl-fosfaatdifferentiatie-stratified\" data-c=\"Netherlands\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Parcels entered for phosphate differentiation, to claim a phosphate class other than high.<\/dd><\/div><div><dt>Outside the rule<\/dt><dd>Parcels not entered keep the standard class high norm. Sampling is the route to a different class, not a duty on every parcel.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>Sampling and analysis by organisations accredited by the Dutch Accreditation Council to ISO\/IEC 17025. P-CaCl2 and P-Al figures; PAL and Pw no longer accepted from 2025.<\/dd><\/div><div><dt>Field identifiers<\/dt><dd>The analysis report gives, for each parcel, its exact location fixed with GPS data and a diagram or drawing of where the samples were taken.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Uitvoeringsregeling Meststoffenwet, Article 103a and Annex L (Bijlage L)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/wetten.overheid.nl\/BWBR0018989\/\" data-ssr-src rel=\"noopener\">Uitvoeringsregeling Meststoffenwet, art. 103a and Bijlage L<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><li><a href=\"https:\/\/www.rvo.nl\/sites\/default\/files\/2025-01\/20250114_Bemonsteringsprotocol_fosfaattoestand_bepalen.pdf\" data-ssr-src rel=\"noopener\">RVO, Bemonsteringsprotocol fosfaattoestand bepalen (PDF)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><li><a href=\"https:\/\/www.rvo.nl\/onderwerpen\/mest\/gebruiken-en-uitrijden\/gebruiksnormen-gebruiksruimte\/fosfaatdifferentiatie\" data-ssr-src rel=\"noopener\">RVO, Fosfaatdifferentiatie<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/netherlands\/#rule-nl-fosfaatdifferentiatie-stratified\">The exact wording, in the source language, on the Netherlands page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody class=\"ssr-grp\" data-g=\"PL\" role=\"rowgroup\"><tr role=\"row\"><th role=\"rowheader\" colspan=\"8\" scope=\"colgroup\" id=\"country-pl\">Poland <a class=\"ssr-grp-link\" href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/poland\/\">Exact wording for Poland<\/a><\/th><\/tr><\/tbody>\n<tbody id=\"rule-pl-ekoschemat-plan-nawozowy-analiza-gleby\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"PL\" data-r=\"\" data-p=\"fertility\" data-s=\"conditional\" data-m=\"representative\" data-q=\"poland | cap eco-scheme carbon farming and nutrient management (rolnictwo w\u0119glowe i zarz\u0105dzanie sk\u0142adnikami od\u017cywczymi), practice fertilisation plan (opracowanie i przestrzeganie planu nawo\u017cenia) | chemical soil analysis behind the fertilisation plan | rozporz\u0105dzenie ministra rolnictwa i rozwoju wsi z dnia 13 marca 2023 r. (dz. u. 2023 poz. 493), as amended up to dz. u. 2026 poz. 325 | \u00a7 4 ust. 1 pkt 3 and \u00a7 7 ust. 2 to 4 | ph, p, k, mg | polska | poland | rzeczpospolita polska | ekoschemat | eko-schemat | rolnictwo w\u0119glowe | rolnictwo weglowe | plan nawo\u017cenia | plan nawozenia | plan nawozowy | arimr | eco-scheme\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Poland<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Chemical soil analysis behind the fertilisation plan<\/span><span class=\"ssr-sub\">CAP eco-scheme Carbon farming and nutrient management (Rolnictwo w\u0119glowe i zarz\u0105dzanie sk\u0142adnikami od\u017cywczymi), practice Fertilisation plan (Opracowanie i przestrzeganie planu nawo\u017cenia)<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">Soil samples taken under the standard on sampling for agrochemical soil testing, from each agricultural parcel on arable land and permanent grassland.<\/td><td role=\"cell\" data-label=\"Depth\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/api.sejm.gov.pl\/eli\/acts\/DU\/2023\/493\/text.html\" data-ssr-src rel=\"noopener\">Dz. U. 2023 poz. 493, text as published (Sejm ELI)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"pl-ekoschemat-plan-nawozowy-analiza-gleby\" data-c=\"Poland\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Farmers claiming eco-scheme points for the fertilisation plan practice, basic variant or variant with liming, on arable land and permanent grassland. The plan must exist within 25 days of the payment application deadline (30 September for winter crops sown that year). The liming variant needs soil pH of 5.5 or less in the chemical soil analysis.<\/dd><\/div><div><dt>Outside the rule<\/dt><dd>From 2026, peatland and wetland covered by GAEC 2 is not counted in the parcel area for the liming variant.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>A laboratory that carries out agrochemical soil testing. The plan rests on a nitrogen balance and a chemical soil analysis.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Rozporz\u0105dzenie Ministra Rolnictwa i Rozwoju Wsi z dnia 13 marca 2023 r. (Dz. U. 2023 poz. 493), as amended up to Dz. U. 2026 poz. 325, \u00a7 4 ust. 1 pkt 3 and \u00a7 7 ust. 2 to 4<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/api.sejm.gov.pl\/eli\/acts\/DU\/2023\/493\/text.html\" data-ssr-src rel=\"noopener\">Dz. U. 2023 poz. 493, text as published (Sejm ELI)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><li><a href=\"https:\/\/api.sejm.gov.pl\/eli\/acts\/DU\/2026\/325\/text.pdf\" data-ssr-src rel=\"noopener\">Dz. U. 2026 poz. 325, latest amending regulation (no change to \u00a7 7 ust. 2 or 4)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/poland\/#rule-pl-ekoschemat-plan-nawozowy-analiza-gleby\">The exact wording, in the source language, on the Poland page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-pl-kschr-instrukcja-pobierania-probek-glebowych\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"PL\" data-r=\"\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"pattern\" data-q=\"poland | chemical-agricultural station sampling instruction (schr a 1) | soil sampling for agrochemical analysis | krajowa stacja chemiczno-rolnicza, instrukcja pobierania pr\u00f3bek glebowych (schr a 1), based on pn-r-04031:1997 | ph, p, k, mg | polska | poland | rzeczpospolita polska | oschr | kschr | stacja chemiczno-rolnicza | okr\u0119gowa stacja chemiczno-rolnicza | pobieranie pr\u00f3bek glebowych | pobieranie probek glebowych | pn-r-04031\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Poland<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil sampling for agrochemical analysis<\/span><span class=\"ssr-sub\">Chemical-agricultural station sampling instruction (SChR A 1)<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Season<\/span> Spring or autumn, before fertiliser is spread<\/li><li><span class=\"k\">Wait<\/span> Avoid sampling straight after mineral or organic fertiliser, and in excessive drought or wet soil<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">One composite sample for at most 4 ha of uniform soil and similar terrain, separately for each crop<\/td><td role=\"cell\" data-label=\"Method\">Up to 20 primary samples along a set scheme, preferably at right angles to cultivation and fertilising passes. Not within 5 m of the field edge, on former stack or heap sites, in ditches, furrows, molehills or gravel patches, or in hollows and steep rises.<\/td><td role=\"cell\" data-label=\"Depth\">0 to 20 cm<\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/www.schr.gov.pl\/index.php\/instrukcje\" data-ssr-src rel=\"noopener\">Krajowa Stacja Chemiczno-Rolnicza, Instrukcje (attachment SChR A 1, .doc)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"pl-kschr-instrukcja-pobierania-probek-glebowych\" data-c=\"Poland\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Sampling instruction from the national network of chemical-agricultural stations for arable land and grassland samples sent to a station. Not law.<\/dd><\/div><div><dt>Field identifiers<\/dt><dd>Number each sample on a field sketch with the area it represents; mark grassland samples with X.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Krajowa Stacja Chemiczno-Rolnicza, Instrukcja pobierania pr\u00f3bek glebowych (SChR A 1), based on PN-R-04031:1997<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.schr.gov.pl\/index.php\/instrukcje\" data-ssr-src rel=\"noopener\">Krajowa Stacja Chemiczno-Rolnicza, Instrukcje (attachment SChR A 1, .doc)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/poland\/#rule-pl-kschr-instrukcja-pobierania-probek-glebowych\">The exact wording, in the source language, on the Poland page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody class=\"ssr-grp\" data-g=\"RO\" role=\"rowgroup\"><tr role=\"row\"><th role=\"rowheader\" colspan=\"8\" scope=\"colgroup\" id=\"country-ro\">Romania <a class=\"ssr-grp-link\" href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/romania\/\">Exact wording for Romania<\/a><\/th><\/tr><\/tbody>\n<tbody id=\"rule-ro-program-actiune-nitrati-studiu-agrochimic\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"RO\" data-r=\"\" data-p=\"fertility\" data-s=\"conditional\" data-m=\"none\" data-q=\"romania | nitrates action programme (programul de ac\u021biune pentru protec\u021bia apelor \u00eempotriva polu\u0103rii cu nitra\u021bi proveni\u021bi din surse agricole) | agrochemical soil study behind the fertilisation plan | ordinul mmap nr. 333\/2021 \u0219i madr nr. 165\/2021 (monitorul oficial nr. 754 din 3 august 2021), annex 2, the action programme | action programme, art. 9(2) to 9(4) and art. 16(2) to 16(3) | ph, p, k, mg | rom\u00e2nia | romania | nitra\u021bi | nitrati | studiu agrochimic | plan de fertilizare | ospa | icpa | programul de ac\u021biune | programul de actiune\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Romania<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Agrochemical soil study behind the fertilisation plan<\/span><span class=\"ssr-sub\">Nitrates Action Programme (Programul de ac\u021biune pentru protec\u021bia apelor \u00eempotriva polu\u0103rii cu nitra\u021bi proveni\u021bi din surse agricole)<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Depth\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/legislatie.just.ro\/Public\/DetaliiDocumentAfis\/245113\" data-ssr-src rel=\"noopener\">Ordin nr. 333\/165\/2021, legislatie.just.ro (annexes published in Monitorul Oficial nr. 754 bis)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"ro-program-actiune-nitrati-studiu-agrochimic\" data-c=\"Romania\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>The Action Programme binds every farmer in Romania. Farms with irrigated land must base the fertilisation plan for that land on agrochemical studies. Any other farm may go above the fixed mineral nitrogen caps only with a fertilisation plan based on agrochemical studies.<\/dd><\/div><div><dt>Outside the rule<\/dt><dd>Farms without an agrochemical study stay under fixed mineral nitrogen caps (for example 80 kg N\/ha a year on permanent grassland) with a simplified fertilisation plan.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Ordinul MMAP nr. 333\/2021 \u0219i MADR nr. 165\/2021 (Monitorul Oficial nr. 754 din 3 august 2021), Annex 2, the Action Programme, Action Programme, art. 9(2) to 9(4) and art. 16(2) to 16(3)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/legislatie.just.ro\/Public\/DetaliiDocumentAfis\/245113\" data-ssr-src rel=\"noopener\">Ordin nr. 333\/165\/2021, legislatie.just.ro (annexes published in Monitorul Oficial nr. 754 bis)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><li><a href=\"https:\/\/mmediu.ro\/app\/webroot\/uploads\/files\/program-de-actiune-1%281%29.pdf\" data-ssr-src rel=\"noopener\">Ministry of Environment, Water and Forests, text of the Action Programme (Annex 2), PDF<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/romania\/#rule-ro-program-actiune-nitrati-studiu-agrochimic\">The exact wording, in the source language, on the Romania page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-ro-cod-bune-practici-studiu-agrochimic\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"RO\" data-r=\"\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"representative\" data-q=\"romania | code of good agricultural practice (codul de bune practici agricole), voluntary since 2021 | agrochemical soil study: frequency, area and depth | codul de bune practici agricole pentru protec\u0163ia apelor \u00eempotriva polu\u0103rii cu nitra\u0163i proveni\u021bi din surse agricole (annex 1 to ordin 333\/165\/2021), ministry of environment, ministry of agriculture and icpa bucharest | ph, p, k, mg | rom\u00e2nia | romania | nitra\u021bi | nitrati | studiu agrochimic | plan de fertilizare | ospa | icpa | codul de bune practici agricole | cbpa\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Romania<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Agrochemical soil study: frequency, area and depth<\/span><span class=\"ssr-sub\">Code of Good Agricultural Practice (Codul de bune practici agricole), voluntary since 2021<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> Soil analyses at least every 4 years. Study every 4 to 5 years for rainfed field crops, 2 to 3 years for irrigated crops.<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">Arable land 2 to 5 ha per composite sample; at most 5 ha per sample in the general recommendation. Grassland and hay meadows 5 to 10 ha; irrigated land 0.25 to 2 ha; orchards and vineyards 0.5 to 2 ha; eroded land at most 2 ha.<\/td><td role=\"cell\" data-label=\"Method\">Composite samples from uniform areas; never mix organically fertilised and unfertilised areas, or different crops, in one sample. Results drawn up as maps (cartograms) of pH, P and K.<\/td><td role=\"cell\" data-label=\"Depth\">Arable 0 to 20 cm. Grassland and hay meadows 0 to 10 cm. Orchards and vineyards 0 to 20 and 20 to 40 cm.<\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/mmediu.ro\/app\/webroot\/uploads\/files\/CBPA-integral-1.pdf\" data-ssr-src rel=\"noopener\">Ministry of Environment, Water and Forests, Codul de bune practici agricole (PDF), chapter 6 and Annex 11<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"ro-cod-bune-practici-studiu-agrochimic\" data-c=\"Romania\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Recommendations in the Code of Good Agricultural Practice, which became voluntary for farmers in 2021. Not mandatory.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>Usual analyses: pH, and as needed hydrolytic acidity, exchangeable bases and sodium, humus, mobile P (PAl) and mobile K (KAl).<\/dd><\/div><div><dt>Field identifiers<\/dt><dd>Number every sample and identify it on the physical block it came from.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Codul de bune practici agricole pentru protec\u0163ia apelor \u00eempotriva polu\u0103rii cu nitra\u0163i proveni\u021bi din surse agricole (Annex 1 to Ordin 333\/165\/2021), Ministry of Environment, Ministry of Agriculture and ICPA Bucharest<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/mmediu.ro\/app\/webroot\/uploads\/files\/CBPA-integral-1.pdf\" data-ssr-src rel=\"noopener\">Ministry of Environment, Water and Forests, Codul de bune practici agricole (PDF), chapter 6 and Annex 11<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/romania\/#rule-ro-cod-bune-practici-studiu-agrochimic\">The exact wording, in the source language, on the Romania page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody class=\"ssr-grp\" data-g=\"ES\" role=\"rowgroup\"><tr role=\"row\"><th role=\"rowheader\" colspan=\"8\" scope=\"colgroup\" id=\"country-es\">Spain <a class=\"ssr-grp-link\" href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/spain\/\">Exact wording for Spain<\/a><\/th><\/tr><\/tbody>\n<tbody id=\"rule-es-rd-1051-2022-plan-de-abonado-soil-data\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"ES\" data-r=\"\" data-p=\"fertility\" data-s=\"conditional\" data-m=\"representative\" data-q=\"spain | sustainable nutrition of agricultural soils, plan de abonado and farm record book | soil data for the fertilisation plan (ph, p, k, organic matter) | real decreto 1051\/2022, with real decreto 1311\/2012 annex iii as amended | rd 1051\/2022 art. 4.2 and 6.2; rd 1311\/2012 annex iii, part i, a.3 | ph, p, k, mg | espa\u00f1a | espana | plan de abonado | nutrici\u00f3n sostenible | nutricion sostenible | cuaderno de explotaci\u00f3n | rd 1051\/2022\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Spain<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil data for the fertilisation plan (pH, P, K, organic matter)<\/span><span class=\"ssr-sub\">Sustainable nutrition of agricultural soils, plan de abonado and farm record book<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> At least every 5 years on irrigated land and every 10 years on rainfed land, where no provincial map or register supplies the data<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">Parcels of similar characteristics grouped in one crop sheet may be analysed through a single representative parcel.<\/td><td role=\"cell\" data-label=\"Depth\">P2O5, K2O and organic matter in the top 30 cm<\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/www.boe.es\/buscar\/act.php?id=BOE-A-2012-11605\" data-ssr-src rel=\"noopener\">Real Decreto 1311\/2012, Annex III (consolidated, BOE)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"es-rd-1051-2022-plan-de-abonado-soil-data\" data-c=\"Spain\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Farm holders who must keep the fertilisation section of the farm record book (cuaderno de explotaci\u00f3n), and every production unit that needs a fertilisation plan (plan de abonado) from 1 September 2026 (1 January 2026 for irrigated units sown or planted between 1 March and 30 June 2026). Both carry the soil data of RD 1311\/2012 Annex III, A.3, per parcel or for one representative parcel per crop sheet. The soil data become obligatory one year after the Ministry publishes its soil sampling and analysis guides, except where sewage sludge is applied.<\/dd><\/div><div><dt>Outside the rule<\/dt><dd>Holdings outside the fertilisation record: 5 ha or less of permanent crops and arable land with 1 ha or less irrigated, and holdings with only pasture that receives no fertiliser. Production units with no fertilisation plan duty: unfertilised pasture, and units up to 10 ha that are rainfed or only pasture or forage for own use. No analysis is needed where parcels cannot be grouped into a crop sheet of at least 5 ha and the production unit is 20 ha at most. Analysis is only required where no provincial map or register supplies the data.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>Minimum data: pH, available P2O5, available K2O and organic matter. Methods of Annex XII of RD 1051\/2022, or methods that give equivalent results.<\/dd><\/div><div><dt>Field identifiers<\/dt><dd>The plan must identify every parcel (recinto) in the production unit unambiguously.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Real Decreto 1051\/2022, with Real Decreto 1311\/2012 Annex III as amended, RD 1051\/2022 art. 4.2 and 6.2; RD 1311\/2012 Annex III, Part I, A.3<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.boe.es\/buscar\/act.php?id=BOE-A-2012-11605\" data-ssr-src rel=\"noopener\">Real Decreto 1311\/2012, Annex III (consolidated, BOE)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><li><a href=\"https:\/\/www.boe.es\/buscar\/act.php?id=BOE-A-2022-23052\" data-ssr-src rel=\"noopener\">Real Decreto 1051\/2022 (consolidated, BOE)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/spain\/#rule-es-rd-1051-2022-plan-de-abonado-soil-data\">The exact wording, in the source language, on the Spain page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-es-mapa-guia-fertilizacion-toma-de-muestras\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"ES\" data-r=\"\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"zone\" data-q=\"spain | ministry of agriculture practical guide to rational fertilisation | soil sampling for fertiliser advice | mapa, gu\u00eda pr\u00e1ctica de la fertilizaci\u00f3n racional de los cultivos en espa\u00f1a, part i (2010) | ph, p, k, mg | espa\u00f1a | espana | mapa | toma de muestras | an\u00e1lisis de suelo | analisis de suelo\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Spain<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil sampling for fertiliser advice<\/span><span class=\"ssr-sub\">Ministry of Agriculture practical guide to rational fertilisation<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Season<\/span> After harvest and always before applying fertiliser or soil amendment. For nitrogen, ideally before sowing and again early in crop development.<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">Divide the field into uniform areas by colour, position, depth and crop growth, each one an area that can be fertilised separately. Sample each separately.<\/td><td role=\"cell\" data-label=\"Depth\">Grassland and no-till 0 to 15 cm. Arable crops the plough layer, 25 to 30 cm. Tree and vine crops 0 to 40 cm in most cases; new plantings or calcareous soils two samples, to 30 cm and 30 to 60 cm. Nitrate about 50 cm.<\/td><td role=\"cell\" data-label=\"Cores\">At least 10 to 12 sub-samples per composite, about 500 g in total<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/www.mapa.gob.es\/dam\/mapa\/contenido\/agricultura\/publicaciones\/01_fertilizacion-baja-.pdf\" data-ssr-src rel=\"noopener\">MAPA, Gu\u00eda pr\u00e1ctica de la fertilizaci\u00f3n racional de los cultivos en Espa\u00f1a, Part I (PDF)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"es-mapa-guia-fertilizacion-toma-de-muestras\" data-c=\"Spain\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice from the Spanish Ministry of Agriculture, Fisheries and Food. Not law, and not the sampling guide that RD 1051\/2022 announces.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>MAPA, Gu\u00eda pr\u00e1ctica de la fertilizaci\u00f3n racional de los cultivos en Espa\u00f1a, Part I (2010)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.mapa.gob.es\/dam\/mapa\/contenido\/agricultura\/publicaciones\/01_fertilizacion-baja-.pdf\" data-ssr-src rel=\"noopener\">MAPA, Gu\u00eda pr\u00e1ctica de la fertilizaci\u00f3n racional de los cultivos en Espa\u00f1a, Part I (PDF)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/spain\/#rule-es-mapa-guia-fertilizacion-toma-de-muestras\">The exact wording, in the source language, on the Spain page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody class=\"ssr-grp\" data-g=\"UA\" role=\"rowgroup\"><tr role=\"row\"><th role=\"rowheader\" colspan=\"8\" scope=\"colgroup\" id=\"country-ua\">Ukraine <a class=\"ssr-grp-link\" href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/ukraine\/\">Exact wording for Ukraine<\/a><\/th><\/tr><\/tbody>\n<tbody id=\"rule-ua-kmu-844-2025-demined-land-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"UA\" data-r=\"\" data-p=\"fertility\" data-s=\"conditional\" data-m=\"representative\" data-q=\"ukraine | soil sampling on agricultural land cleared of explosive ordnance | soil sampling on farmland cleared of explosive ordnance | \u043f\u043e\u0441\u0442\u0430\u043d\u043e\u0432\u0430 \u043a\u0430\u0431\u0456\u043d\u0435\u0442\u0443 \u043c\u0456\u043d\u0456\u0441\u0442\u0440\u0456\u0432 \u0443\u043a\u0440\u0430\u0457\u043d\u0438 \u0432\u0456\u0434 14 \u043b\u0438\u043f\u043d\u044f 2025 \u0440. \u2116 844, \u043f\u043e\u0440\u044f\u0434\u043e\u043a \u0432\u0456\u0434\u0431\u043e\u0440\u0443 \u043f\u0440\u043e\u0431 \u0491\u0440\u0443\u043d\u0442\u0456\u0432 \u043d\u0430 \u0437\u0435\u043c\u043b\u044f\u0445 \u0441\u0456\u043b\u044c\u0441\u044c\u043a\u043e\u0433\u043e\u0441\u043f\u043e\u0434\u0430\u0440\u0441\u044c\u043a\u043e\u0433\u043e \u043f\u0440\u0438\u0437\u043d\u0430\u0447\u0435\u043d\u043d\u044f, \u043e\u0447\u0438\u0449\u0435\u043d\u0438\u0445 \u0432\u0456\u0434 \u0432\u0438\u0431\u0443\u0445\u043e\u043d\u0435\u0431\u0435\u0437\u043f\u0435\u0447\u043d\u0438\u0445 \u043f\u0440\u0435\u0434\u043c\u0435\u0442\u0456\u0432 | \u043f\u043e\u0440\u044f\u0434\u043e\u043a, \u043f\u0443\u043d\u043a\u0442\u0438 1 to 12 | ph, p, k, mg | \u0443\u043a\u0440\u0430\u0457\u043d\u0430 | ukraina | ukraine | \u0443\u043a\u0440\u0430\u0438\u043d\u0430 | \u0440\u043e\u0437\u043c\u0456\u043d\u0443\u0432\u0430\u043d\u043d\u044f | rozminuvannia | demining | mine clearance | \u0432\u0438\u0431\u0443\u0445\u043e\u043d\u0435\u0431\u0435\u0437\u043f\u0435\u0447\u043d\u0438\u0445 \u043f\u0440\u0435\u0434\u043c\u0435\u0442\u0456\u0432 | \u043f\u043e\u0441\u0442\u0430\u043d\u043e\u0432\u0430 844 | \u0432\u0456\u0434\u0431\u0456\u0440 \u043f\u0440\u043e\u0431 \u0491\u0440\u0443\u043d\u0442\u0456\u0432\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Ukraine<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil sampling on farmland cleared of explosive ordnance<\/span><span class=\"ssr-sub\">Soil sampling on agricultural land cleared of explosive ordnance<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Wait<\/span> Only after demining is finished, with a handover certificate for the cleared area or a guarantee letter after non-technical survey<\/li><li><span class=\"k\">Wait<\/span> Notify the authorised institution at least 7 working days before sampling<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">Point samples from the plough layer, taken by hand or machine along a survey scheme, under methodological recommendations approved by the agriculture ministry. An arbitration sample is taken at the same time by the ministry&#8217;s authorised institution.<\/td><td role=\"cell\" data-label=\"Depth\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/www.kmu.gov.ua\/storage\/app\/uploads\/public\/687\/659\/437\/687659437f8a7919940924.pdf\" data-ssr-src rel=\"noopener\">Cabinet of Ministers of Ukraine, \u041f\u043e\u0440\u044f\u0434\u043e\u043a approved by resolution No. 844 of 14 July 2025 (PDF)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"ua-kmu-844-2025-demined-land-soil-sampling\" data-c=\"Ukraine\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Soil sampling and analysis on agricultural land cleared of explosive ordnance, ordered by the owner or user, a public body or another customer, to decide whether the land is fit for crops or needs reclamation or conservation. Sampling only after demining is finished and a handover certificate or guarantee letter exists.<\/dd><\/div><div><dt>Outside the rule<\/dt><dd>Sampling is done at a customer&#8217;s request; the procedure does not oblige every owner to sample.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>Agrochemical laboratories or research institutions legally entitled to do the work. Analysis against the Cabinet of Ministers limits for hazardous substances in soil (resolution No. 1325 of 15 December 2021) and EU regulation requirements. The arbitration sample is kept for 2 years.<\/dd><\/div><div><dt>Field identifiers<\/dt><dd>The advance notice gives the cadastral number of each land plot and the date and time of sampling.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>\u041f\u043e\u0441\u0442\u0430\u043d\u043e\u0432\u0430 \u041a\u0430\u0431\u0456\u043d\u0435\u0442\u0443 \u041c\u0456\u043d\u0456\u0441\u0442\u0440\u0456\u0432 \u0423\u043a\u0440\u0430\u0457\u043d\u0438 \u0432\u0456\u0434 14 \u043b\u0438\u043f\u043d\u044f 2025 \u0440. \u2116 844, \u041f\u043e\u0440\u044f\u0434\u043e\u043a \u0432\u0456\u0434\u0431\u043e\u0440\u0443 \u043f\u0440\u043e\u0431 \u0491\u0440\u0443\u043d\u0442\u0456\u0432 \u043d\u0430 \u0437\u0435\u043c\u043b\u044f\u0445 \u0441\u0456\u043b\u044c\u0441\u044c\u043a\u043e\u0433\u043e\u0441\u043f\u043e\u0434\u0430\u0440\u0441\u044c\u043a\u043e\u0433\u043e \u043f\u0440\u0438\u0437\u043d\u0430\u0447\u0435\u043d\u043d\u044f, \u043e\u0447\u0438\u0449\u0435\u043d\u0438\u0445 \u0432\u0456\u0434 \u0432\u0438\u0431\u0443\u0445\u043e\u043d\u0435\u0431\u0435\u0437\u043f\u0435\u0447\u043d\u0438\u0445 \u043f\u0440\u0435\u0434\u043c\u0435\u0442\u0456\u0432, \u041f\u043e\u0440\u044f\u0434\u043e\u043a, \u043f\u0443\u043d\u043a\u0442\u0438 1 to 12<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.kmu.gov.ua\/storage\/app\/uploads\/public\/687\/659\/437\/687659437f8a7919940924.pdf\" data-ssr-src rel=\"noopener\">Cabinet of Ministers of Ukraine, \u041f\u043e\u0440\u044f\u0434\u043e\u043a approved by resolution No. 844 of 14 July 2025 (PDF)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><li><a href=\"https:\/\/www.kmu.gov.ua\/npas\/pro-zatverdzhennia-poriadku-vidboru-prob-gruntiv-na-zemliakh-silskohospodarskoho-t140725\" data-ssr-src rel=\"noopener\">Cabinet of Ministers of Ukraine, resolution No. 844 of 14 July 2025<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/ukraine\/#rule-ua-kmu-844-2025-demined-land-soil-sampling\">The exact wording, in the source language, on the Ukraine page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody class=\"ssr-grp\" data-g=\"GB\" role=\"rowgroup\"><tr role=\"row\"><th role=\"rowheader\" colspan=\"8\" scope=\"colgroup\" id=\"country-gb\">United Kingdom <a class=\"ssr-grp-link\" href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-kingdom\/\">Exact wording for United Kingdom<\/a><\/th><\/tr><\/tbody>\n<tbody id=\"rule-gb-eng-frfw-reg-5\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"GB\" data-r=\"GB-ENG\" data-p=\"fertility\" data-s=\"conditional\" data-m=\"none\" data-q=\"united kingdom | england | farming rules for water | soil test results for manure and fertiliser planning | the reduction and prevention of agricultural diffuse pollution (england) regulations 2018, si 2018\/151 | regulation 5 | ph, p, k, mg | england | united kingdom | uk | great britain | farming rules for water | frfw | rb209\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">England<\/span><span class=\"ssr-sub\">United Kingdom<\/span><span class=\"ssr-sub\">England only. Wales, Scotland and Northern Ireland have their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil test results for manure and fertiliser planning<\/span><span class=\"ssr-sub\">Farming Rules for Water<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Result valid<\/span> No more than 5 years old when the manure or fertiliser is applied. Results taken before April 2018, or by another land manager, still count.<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Depth\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/www.legislation.gov.uk\/uksi\/2018\/151\/regulation\/5\" data-ssr-src rel=\"noopener\">SI 2018\/151, regulation 5<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"gb-eng-frfw-reg-5\" data-c=\"England\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Land managers planning to apply organic manure or manufactured fertiliser to cultivated agricultural land in England: land cultivated in the previous year, or fertilised or manured in the previous 3 years.<\/dd><\/div><div><dt>Outside the rule<\/dt><dd>Land outside that definition. The rule limits the age of the result used for planning; it does not require every field to be sampled on a cycle.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>Results must include pH, N, P, K and Mg. Soil N may be an assessment of soil nitrogen supply instead of a test.<\/dd><\/div><div><dt>In force from<\/dt><dd>2 April 2018<\/dd><\/div><div><dt>Legal text<\/dt><dd>The Reduction and Prevention of Agricultural Diffuse Pollution (England) Regulations 2018, SI 2018\/151, Regulation 5<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.legislation.gov.uk\/uksi\/2018\/151\/regulation\/5\" data-ssr-src rel=\"noopener\">SI 2018\/151, regulation 5<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><li><a href=\"https:\/\/www.gov.uk\/guidance\/rules-for-farmers-and-land-managers-to-prevent-water-pollution\" data-ssr-src rel=\"noopener\">GOV.UK, Rules for farmers and land managers to prevent water pollution<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-kingdom\/#rule-gb-eng-frfw-reg-5\">The exact wording, in the source language, on the United Kingdom page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-gb-nir-nap-2019-derogation-soil-analysis\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"GB\" data-r=\"GB-NIR\" data-p=\"p\" data-s=\"conditional\" data-m=\"none\" data-q=\"united kingdom | northern ireland | nutrients action programme (nap), grassland derogation | soil analysis for nitrogen and phosphorus on derogated grassland | the nutrient action programme regulations (northern ireland) 2019, s.r. 2019\/81, as amended by s.r. 2019\/183 | schedule 8, paragraphs 5 and 6, read with regulation 39 | phosphorus | northern ireland | ni | united kingdom | uk | ulster | daera | nutrients action programme | nap\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Northern Ireland<\/span><span class=\"ssr-sub\">United Kingdom<\/span><span class=\"ssr-sub\">Northern Ireland only. England, Scotland and Wales have their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil analysis for nitrogen and phosphorus on derogated grassland<\/span><span class=\"ssr-sub\">Nutrients Action Programme (NAP), grassland derogation<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> At least every 4 years for each homogeneous area of grassland<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">At least one analysis per 4 ha<\/td><td role=\"cell\" data-label=\"Method\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Depth\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/www.legislation.gov.uk\/nisr\/2019\/81\/schedule\/8\" data-ssr-src rel=\"noopener\">S.R. 2019\/81, Schedule 8, Conditions applying in relation to a Derogation<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"gb-nir-nap-2019-derogation-soil-analysis\" data-c=\"Northern Ireland\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Grassland holdings authorised by DAERA to apply grazing livestock manure containing up to 250 kg N\/ha a year (the derogation).<\/dd><\/div><div><dt>Outside the rule<\/dt><dd>Holdings without a derogation authorisation.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>The Nutrient Action Programme Regulations (Northern Ireland) 2019, S.R. 2019\/81, as amended by S.R. 2019\/183, Schedule 8, paragraphs 5 and 6, read with regulation 39<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.legislation.gov.uk\/nisr\/2019\/81\/schedule\/8\" data-ssr-src rel=\"noopener\">S.R. 2019\/81, Schedule 8, Conditions applying in relation to a Derogation<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><li><a href=\"https:\/\/www.legislation.gov.uk\/nisr\/2019\/81\/regulation\/39\" data-ssr-src rel=\"noopener\">S.R. 2019\/81, regulation 39<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-kingdom\/#rule-gb-nir-nap-2019-derogation-soil-analysis\">The exact wording, in the source language, on the United Kingdom page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-gb-nir-nap-2019-schedule-5-phosphorus\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"GB\" data-r=\"GB-NIR\" data-p=\"p\" data-s=\"conditional\" data-m=\"pattern\" data-q=\"united kingdom | northern ireland | nutrients action programme (nap) | soil test for the phosphorus index | the nutrient action programme regulations (northern ireland) 2019, s.r. 2019\/81, as amended by s.r. 2019\/183 | schedule 5, read with regulations 12 and 13 | phosphorus | northern ireland | ni | united kingdom | uk | ulster | daera | nutrients action programme | nap\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Northern Ireland<\/span><span class=\"ssr-sub\">United Kingdom<\/span><span class=\"ssr-sub\">Northern Ireland only. England, Scotland and Wales have their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil test for the phosphorus index<\/span><span class=\"ssr-sub\">Nutrients Action Programme (NAP)<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> Every fourth year is satisfactory as a basis for phosphorus fertiliser recommendations<\/li><li><span class=\"k\">Wait<\/span> At least 3 months after the last fertiliser containing phosphorus, organic or chemical<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">Not more than 4 ha per sample. Generally one sample per field; areas that differ in growth, cropping or fertilising are sampled separately.<\/td><td role=\"cell\" data-label=\"Method\">Sub-samples taken at regular intervals along a W pattern, evenly spread over the whole area. Avoid headlands, dung and urine patches and where stock gather.<\/td><td role=\"cell\" data-label=\"Depth\">Grassland 0 to 7.5 cm. Arable land 0 to 15 cm.<\/td><td role=\"cell\" data-label=\"Cores\">At least 25 sub-samples per sample<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/www.legislation.gov.uk\/nisr\/2019\/81\/schedule\/5\" data-ssr-src rel=\"noopener\">S.R. 2019\/81, Schedule 5, Soil test for Phosphorus<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"gb-nir-nap-2019-schedule-5-phosphorus\" data-c=\"Northern Ireland\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Controllers applying chemical phosphorus fertiliser, or anaerobic digestate, in Northern Ireland: the soil phosphorus index that caps the application is ascertained by a Schedule 5 soil test.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>A laboratory competent to analyse soils for phosphorus, with a UKAS accreditation (or national equivalent) statement on each analysis. Olsen extractable P, reported in mg P\/l.<\/dd><\/div><div><dt>In force from<\/dt><dd>11 April 2019<\/dd><\/div><div><dt>Legal text<\/dt><dd>The Nutrient Action Programme Regulations (Northern Ireland) 2019, S.R. 2019\/81, as amended by S.R. 2019\/183, Schedule 5, read with regulations 12 and 13<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.legislation.gov.uk\/nisr\/2019\/81\/schedule\/5\" data-ssr-src rel=\"noopener\">S.R. 2019\/81, Schedule 5, Soil test for Phosphorus<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><li><a href=\"https:\/\/www.legislation.gov.uk\/nisr\/2019\/81\/regulation\/12\" data-ssr-src rel=\"noopener\">S.R. 2019\/81, regulation 12<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><li><a href=\"https:\/\/www.legislation.gov.uk\/nisr\/2019\/81\/regulation\/13\" data-ssr-src rel=\"noopener\">S.R. 2019\/81, regulation 13<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><li><a href=\"https:\/\/www.legislation.gov.uk\/nisr\/2019\/81\/regulation\/1\" data-ssr-src rel=\"noopener\">S.R. 2019\/81, regulation 1<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><li><a href=\"https:\/\/www.daera-ni.gov.uk\/news\/new-requirements-soil-sampling\" data-ssr-src rel=\"noopener\">DAERA, New requirements for soil sampling (8 August 2019)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-kingdom\/#rule-gb-nir-nap-2019-schedule-5-phosphorus\">The exact wording, in the source language, on the United Kingdom page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-gb-nir-daera-soil-sampling-advice\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"GB\" data-r=\"GB-NIR\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"none\" data-q=\"united kingdom | northern ireland | daera soil sampling advice | routine soil fertility sampling | daera, new requirements for soil sampling (news release, 8 august 2019) | ph, p, k, mg | northern ireland | ni | united kingdom | uk | ulster | daera | nutrients action programme | nap\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Northern Ireland<\/span><span class=\"ssr-sub\">United Kingdom<\/span><span class=\"ssr-sub\">Northern Ireland only. England, Scotland and Wales have their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Routine soil fertility sampling<\/span><span class=\"ssr-sub\">DAERA soil sampling advice<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Season<\/span> October to February<\/li><li><span class=\"k\">Wait<\/span> 3 months after organic manure, lime or bagged fertiliser<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">One sample for up to 4 ha, in one or more fields of similar soil type and management<\/td><td role=\"cell\" data-label=\"Method\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Depth\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Cores\">20 to 25 cores per sample<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/www.daera-ni.gov.uk\/news\/new-requirements-soil-sampling\" data-ssr-src rel=\"noopener\">DAERA, New requirements for soil sampling<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"gb-nir-daera-soil-sampling-advice\" data-c=\"Northern Ireland\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for Northern Ireland farms from the Department of Agriculture, Environment and Rural Affairs. Not law.<\/dd><\/div><div><dt>Field identifiers<\/dt><dd>Label each bag with your name, farm survey number and field number.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>DAERA, New requirements for soil sampling (news release, 8 August 2019)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.daera-ni.gov.uk\/news\/new-requirements-soil-sampling\" data-ssr-src rel=\"noopener\">DAERA, New requirements for soil sampling<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-kingdom\/#rule-gb-nir-daera-soil-sampling-advice\">The exact wording, in the source language, on the United Kingdom page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-gb-sct-bps-whole-farm-plan-soil-analysis\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"GB\" data-r=\"GB-SCT\" data-p=\"fertility\" data-s=\"conditional\" data-m=\"none\" data-q=\"united kingdom | scotland | basic payment scheme, whole farm plan (soil report) | soil report as one of the whole farm plan plans or reports | rural support (improvement) (miscellaneous amendment) (scotland) regulations 2025, s.s.i. 2025\/59, inserting article 43a and annex ixa into regulation (eu) no 1307\/2013 as it applies in scotland | article 43a and annex ixa paragraph 5 (soil report) | ph, p, k, mg | scotland | alba | united kingdom | uk | great britain | whole farm plan | wfp | rural payments | basic payment scheme | bps\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Scotland<\/span><span class=\"ssr-sub\">United Kingdom<\/span><span class=\"ssr-sub\">Scotland only. England, Wales and Northern Ireland have their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil report as one of the Whole Farm Plan plans or reports<\/span><span class=\"ssr-sub\">Basic Payment Scheme, Whole Farm Plan (soil report)<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Result valid<\/span> The soil report must have been prepared no more than 5 years before the start of the claim year<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Depth\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/www.legislation.gov.uk\/ssi\/2025\/59\/regulation\/3\" data-ssr-src rel=\"noopener\">S.S.I. 2025\/59, regulation 3 (Article 43a and Annex IXa)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"gb-sct-bps-whole-farm-plan-soil-analysis\" data-c=\"Scotland\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Basic Payment Scheme claimants in Scotland, who must prepare any two or more of five plans or reports for the claim year, and who choose the soil report as one of them. The report covers every field of Region 1 land managed on a permanent basis that receives artificial fertiliser or organic manure.<\/dd><\/div><div><dt>Outside the rule<\/dt><dd>Land let for less than a year, and land used for common grazing, is not land managed on a permanent basis.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>For each field, any two of: soil pH, organic matter, phosphorus, potassium.<\/dd><\/div><div><dt>In force from<\/dt><dd>5 March 2025<\/dd><\/div><div><dt>Legal text<\/dt><dd>Rural Support (Improvement) (Miscellaneous Amendment) (Scotland) Regulations 2025, S.S.I. 2025\/59, inserting Article 43a and Annex IXa into Regulation (EU) No 1307\/2013 as it applies in Scotland, Article 43a and Annex IXa paragraph 5 (soil report)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.legislation.gov.uk\/ssi\/2025\/59\/regulation\/3\" data-ssr-src rel=\"noopener\">S.S.I. 2025\/59, regulation 3 (Article 43a and Annex IXa)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><li><a href=\"https:\/\/www.legislation.gov.uk\/ssi\/2025\/59\/regulation\/1\" data-ssr-src rel=\"noopener\">S.S.I. 2025\/59, regulation 1 (commencement)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-kingdom\/#rule-gb-sct-bps-whole-farm-plan-soil-analysis\">The exact wording, in the source language, on the United Kingdom page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-gb-sct-easr-sch-18-waste-to-land-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"GB\" data-r=\"GB-SCT\" data-p=\"fertility\" data-s=\"conditional\" data-m=\"representative\" data-q=\"united kingdom | scotland | environmental authorisations (scotland): recovery of waste by application to land for soil improvement | soil testing before and during waste application to land | the environmental authorisations (scotland) regulations 2018, s.s.i. 2018\/219, schedule 18, inserted by s.s.i. 2025\/165 | schedule 18, paragraph 8 and table 2 | ph, p, k, mg | scotland | alba | united kingdom | uk | sepa | easr | environmental authorisations | sewage sludge | waste to land | soil improvement\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Scotland<\/span><span class=\"ssr-sub\">United Kingdom<\/span><span class=\"ssr-sub\">Scotland only. England, Wales and Northern Ireland have their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil testing before and during waste application to land<\/span><span class=\"ssr-sub\">Environmental Authorisations (Scotland): recovery of waste by application to land for soil improvement<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Result valid<\/span> Full analysis no more than 1 year before the first application to that land<\/li><li><span class=\"k\">Repeat<\/span> For later applications, at the Table 2 frequencies: every 5 years for pH, extractable P, K and Mg (if claimed), texture and any element that earlier exceeded 90 percent of its limit; every 10 years for total carbon or organic matter and the metals<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">One representative sample per unit of land of not more than 5 ha<\/td><td role=\"cell\" data-label=\"Method\">Representative sample per unit. Sampling, handling and testing follow SEPA technical guidance.<\/td><td role=\"cell\" data-label=\"Depth\">Depth of the topsoil or 15 cm, whichever is deeper<\/td><td role=\"cell\" data-label=\"Cores\">25 cores per sample<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/www.legislation.gov.uk\/ssi\/2018\/219\/schedule\/18\" data-ssr-src rel=\"noopener\">S.S.I. 2018\/219, Schedule 18 (revised)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"gb-sct-easr-sch-18-waste-to-land-soil-sampling\" data-c=\"Scotland\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Recovery of waste (such as treated sewage sludge) by application to land for soil improvement, under a SEPA authorisation: SEPA must include these soil testing conditions.<\/dd><\/div><div><dt>Outside the rule<\/dt><dd>Creation of new soils when restoring former industrial land is not soil improvement under this schedule.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>Every 5 years: soil pH, extractable P and K, soil texture, extractable Mg if claimed to be of benefit, and any potentially toxic element that earlier exceeded 90 percent of its limit. Every 10 years: total carbon or organic matter, cadmium, copper, mercury, nickel, lead, zinc. Metals by strong acid digestion, detection limit no more than 10 percent of the limit value.<\/dd><\/div><div><dt>In force from<\/dt><dd>1 June 2025<\/dd><\/div><div><dt>Legal text<\/dt><dd>The Environmental Authorisations (Scotland) Regulations 2018, S.S.I. 2018\/219, Schedule 18, inserted by S.S.I. 2025\/165, Schedule 18, paragraph 8 and Table 2<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.legislation.gov.uk\/ssi\/2018\/219\/schedule\/18\" data-ssr-src rel=\"noopener\">S.S.I. 2018\/219, Schedule 18 (revised)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><li><a href=\"https:\/\/www.legislation.gov.uk\/ssi\/2025\/165\/regulation\/1\" data-ssr-src rel=\"noopener\">S.S.I. 2025\/165, regulation 1 (commencement)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-kingdom\/#rule-gb-sct-easr-sch-18-waste-to-land-soil-sampling\">The exact wording, in the source language, on the United Kingdom page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-gb-sct-nvz-derogation-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"GB\" data-r=\"GB-SCT\" data-p=\"p\" data-s=\"conditional\" data-m=\"none\" data-q=\"united kingdom | scotland | action programme for nitrate vulnerable zones, grassland derogation | nitrogen and phosphate soil sampling on derogated grassland | the action programme for nitrate vulnerable zones (scotland) regulations 2008, s.s.i. 2008\/298, as amended by s.s.i. 2009\/447 | regulation 14b(f), read with regulation 14(4) | phosphorus | scotland | alba | united kingdom | uk | nvz | nitrate vulnerable zone | nitrates | derogation\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Scotland<\/span><span class=\"ssr-sub\">United Kingdom<\/span><span class=\"ssr-sub\">Scotland only. England, Wales and Northern Ireland have their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Nitrogen and phosphate soil sampling on derogated grassland<\/span><span class=\"ssr-sub\">Action Programme for Nitrate Vulnerable Zones, grassland derogation<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> At least once every 4 years<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">At least one sampling and analysis for every 5 ha of the farm that can reasonably be considered homogeneous<\/td><td role=\"cell\" data-label=\"Method\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Depth\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/www.legislation.gov.uk\/ssi\/2008\/298\" data-ssr-src rel=\"noopener\">S.S.I. 2008\/298 (revised), regulations 14 and 14B<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"gb-sct-nvz-derogation-soil-sampling\" data-c=\"Scotland\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Grassland farms in a Nitrate Vulnerable Zone granted a derogation to apply grazing livestock manure up to 250 kg N\/ha a year.<\/dd><\/div><div><dt>Outside the rule<\/dt><dd>Farms without a derogation, and land outside Nitrate Vulnerable Zones.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>The Action Programme for Nitrate Vulnerable Zones (Scotland) Regulations 2008, S.S.I. 2008\/298, as amended by S.S.I. 2009\/447, Regulation 14B(f), read with regulation 14(4)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.legislation.gov.uk\/ssi\/2008\/298\" data-ssr-src rel=\"noopener\">S.S.I. 2008\/298 (revised), regulations 14 and 14B<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-kingdom\/#rule-gb-sct-nvz-derogation-soil-sampling\">The exact wording, in the source language, on the United Kingdom page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-gb-sct-whole-farm-plan-sampling-advice\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"GB\" data-r=\"GB-SCT\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"pattern\" data-q=\"united kingdom | scotland | whole farm plan, soil analysis minimum standard and recommended practice | whole farm plan soil analysis: minimum standard and sampling advice | scottish government rural payments and services, whole farm plan guidance, soil analysis minimum standard (published 18 march 2026) | ph, p, k, mg | scotland | alba | united kingdom | uk | great britain | whole farm plan | wfp | rural payments | basic payment scheme | bps\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Scotland<\/span><span class=\"ssr-sub\">United Kingdom<\/span><span class=\"ssr-sub\">Scotland only. England, Wales and Northern Ireland have their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Whole Farm Plan soil analysis: minimum standard and sampling advice<\/span><span class=\"ssr-sub\">Whole Farm Plan, Soil Analysis minimum standard and recommended practice<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> Minimum standard: every qualifying Region 1 field sampled at least once every 5 years; by 15 May 2028 all of it sampled at least once since 16 May 2023<\/li><li><span class=\"k\">Repeat<\/span> Recommended, not mandatory: at least 20 percent of Region 1 land sampled each year<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">Recommended, not mandatory: walk a W across the field, at least five samples on each leg. No minimum number of samples per field is set.<\/td><td role=\"cell\" data-label=\"Depth\">Recommended: grass 0 to 7 cm, arable 0 to 15 cm.<\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/www.ruralpayments.org\/topics\/all-schemes\/whole-farm-plan\/\" data-ssr-src rel=\"noopener\">Scottish Government Rural Payments and Services, Whole Farm Plan<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"gb-sct-whole-farm-plan-sampling-advice\" data-c=\"Scotland\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Scottish Government guidance for farmers and crofters doing soil analysis for the Whole Farm Plan: Region 1 land they manage on a permanent basis and apply artificial fertiliser or organic manure to. The page sets a minimum standard for the analysis and separate recommendations it marks as not mandatory. Guidance, not law; the Regulations themselves ask only for any two of pH, organic matter, P and K (separate row).<\/dd><\/div><div><dt>Outside the rule<\/dt><dd>Seasonal land and common grazing shares.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>Minimum standard: analysis by a laboratory, including pH, phosphate (P), potash (K) and carbon (loss on ignition or Dumas test). Keep the results and a record of the actions taken.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Scottish Government Rural Payments and Services, Whole Farm Plan guidance, Soil Analysis minimum standard (published 18 March 2026)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.ruralpayments.org\/topics\/all-schemes\/whole-farm-plan\/\" data-ssr-src rel=\"noopener\">Scottish Government Rural Payments and Services, Whole Farm Plan<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-kingdom\/#rule-gb-sct-whole-farm-plan-sampling-advice\">The exact wording, in the source language, on the United Kingdom page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-gb-wls-sfs-ua1-soil-testing\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"GB\" data-r=\"GB-WLS\" data-p=\"fertility\" data-s=\"conditional\" data-m=\"none\" data-q=\"united kingdom | wales | sustainable farming scheme, universal layer, ua1 soil health | soil testing of improved land on a five-year cycle | sustainable farming scheme, universal layer: guidance 2026 (scheme rules), under the agriculture support schemes (eligibility, enforcement and appeals) (wales) regulations 2025, s.i. 2025\/1308 (w. 213) | rules booklet section j1 (ua1: soil health) | ph, p, k, mg | wales | cymru | united kingdom | uk | great britain | sustainable farming scheme | sfs | universal layer | ua1\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Wales<\/span><span class=\"ssr-sub\">United Kingdom<\/span><span class=\"ssr-sub\">Wales only. England, Scotland and Northern Ireland have their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil testing of improved land on a five-year cycle<\/span><span class=\"ssr-sub\">Sustainable Farming Scheme, Universal Layer, UA1 Soil Health<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> At least 20 percent of improved-land parcels tested in 2026 (or tested in the past 5 years); from year 2, on average 20 percent a year so every parcel is tested within 5 years, unless you opt for a break in year 2. Each year&#8217;s testing done by 31 December<\/li><li><span class=\"k\">Result valid<\/span> Tests on improved-land parcels after 1 January 2022 count if they include P, K, Mg and pH; parcels are tested again 5 years from the last test<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Depth\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/www.gov.wales\/sites\/default\/files\/publications\/2025-12\/sustainable-farming-scheme-2026-universal-layer-rules-booklet.pdf\" data-ssr-src rel=\"noopener\">Welsh Government, Sustainable Farming Scheme Universal Layer: Guidance 2026 (rules booklet), section J1<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"gb-wls-sfs-ua1-soil-testing\" data-c=\"Wales\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Only farmers in the Sustainable Farming Scheme Universal Layer (agreement holders) who claim on field parcels with improved land. The duty comes from the scheme agreement and scheme rules; farms outside the scheme have no duty under this rule.<\/dd><\/div><div><dt>Outside the rule<\/dt><dd>Permanent habitat land. Improved land that has had no inputs or lime since 1 April 2022 and will have none in the scheme year, once confirmed on the Single Application Form.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>An accredited laboratory, the same one for every sample from the farm. Tests from 1 January 2026 must cover at least P, K, Mg, pH and soil organic matter.<\/dd><\/div><div><dt>Field identifiers<\/dt><dd>Record the field number, date of test and results (P, K, Mg, pH, SOM) for each tested parcel on the SFS Universal Dashboard.<\/dd><\/div><div><dt>In force from<\/dt><dd>1 January 2026<\/dd><\/div><div><dt>Legal text<\/dt><dd>Sustainable Farming Scheme, Universal Layer: Guidance 2026 (scheme rules), under the Agriculture Support Schemes (Eligibility, Enforcement and Appeals) (Wales) Regulations 2025, S.I. 2025\/1308 (W. 213), Rules booklet section J1 (UA1: Soil Health)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.gov.wales\/sites\/default\/files\/publications\/2025-12\/sustainable-farming-scheme-2026-universal-layer-rules-booklet.pdf\" data-ssr-src rel=\"noopener\">Welsh Government, Sustainable Farming Scheme Universal Layer: Guidance 2026 (rules booklet), section J1<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><li><a href=\"https:\/\/www.legislation.gov.uk\/wsi\/2025\/1308\" data-ssr-src rel=\"noopener\">S.I. 2025\/1308 (W. 213), Agriculture Support Schemes (Eligibility, Enforcement and Appeals) (Wales) Regulations 2025<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-kingdom\/#rule-gb-wls-sfs-ua1-soil-testing\">The exact wording, in the source language, on the United Kingdom page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-gb-wls-sfs-soil-testing-technical-guidance\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"GB\" data-r=\"GB-WLS\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"pattern\" data-q=\"united kingdom | wales | sustainable farming scheme, ua1 technical guidance for soil testing | how to take a soil sample for ua1 | welsh government, sustainable farming scheme universal layer, ua1: soil health technical guidance (last updated 26 march 2026) | ph, p, k, mg | wales | cymru | united kingdom | uk | great britain | sustainable farming scheme | sfs | universal layer | ua1\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Wales<\/span><span class=\"ssr-sub\">United Kingdom<\/span><span class=\"ssr-sub\">Wales only. England, Scotland and Northern Ireland have their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">How to take a soil sample for UA1<\/span><span class=\"ssr-sub\">Sustainable Farming Scheme, UA1 technical guidance for soil testing<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Season<\/span> Autumn<\/li><li><span class=\"k\">Wait<\/span> 6 months after lime or fertiliser (nitrogen excepted). 6 weeks after the last organic manure.<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">A uniform field can be one sampling unit; a uniform field over 10 ha needs at least two units. Adjoining parcels each under 0.5 ha, managed alike on the same soil, may be combined up to 4 ha in total. Walk a wide W across each unit, 5 to 7 samples per leg at regular intervals. Avoid old manure heaps, feeding areas, headlands, gates and field edges.<\/td><td role=\"cell\" data-label=\"Depth\">Permanent grass 0 to 7.5 cm. Arable or short-term grass ley 0 to 15 cm.<\/td><td role=\"cell\" data-label=\"Cores\">5 to 7 samples on each leg of the W; 20 sample points for a set of combined small parcels<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/www.gov.wales\/sites\/default\/files\/publications\/2026-03\/sustainable-farming-scheme-technical-guidance-for-soil-testing.pdf\" data-ssr-src rel=\"noopener\">Welsh Government, UA1: Soil Health Technical Guidance (PDF)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"gb-wls-sfs-soil-testing-technical-guidance\" data-c=\"Wales\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Sampling method advice from the Welsh Government for farms testing soil under the Sustainable Farming Scheme. The sampling method is advice, not law.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>Send every sample from the farm to the same accredited laboratory, with the same methods each sampling period.<\/dd><\/div><div><dt>Field identifiers<\/dt><dd>Label each bag with the field name or number, your name, the farm name and the date. The paperwork sent to the laboratory repeats these and adds the GPS position if taken, the sampling date and the depth.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Welsh Government, Sustainable Farming Scheme Universal Layer, UA1: Soil Health Technical Guidance (last updated 26 March 2026)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.gov.wales\/sites\/default\/files\/publications\/2026-03\/sustainable-farming-scheme-technical-guidance-for-soil-testing.pdf\" data-ssr-src rel=\"noopener\">Welsh Government, UA1: Soil Health Technical Guidance (PDF)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-kingdom\/#rule-gb-wls-sfs-soil-testing-technical-guidance\">The exact wording, in the source language, on the United Kingdom page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody class=\"ssr-grp\" data-g=\"US\" role=\"rowgroup\"><tr role=\"row\"><th role=\"rowheader\" colspan=\"8\" scope=\"colgroup\" id=\"country-us\">United States <a class=\"ssr-grp-link\" href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/\">Exact wording for United States<\/a><\/th><\/tr><\/tbody>\n<tbody id=\"rule-us-40-cfr-412-cafo-soil-phosphorus\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"\" data-p=\"p\" data-s=\"conditional\" data-m=\"none\" data-q=\"united states | federal cafo effluent guidelines, nutrient management plan | phosphorus soil analysis for manure application | 40 cfr part 412, concentrated animal feeding operations point source category | \u00a7 412.4(c)(3), with \u00a7 412.30 and \u00a7 412.40 | phosphorus | usa | united states | federal | epa | cafo | cfr | 40 cfr 412 | animal feeding operation\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">United States<\/span><span class=\"ssr-sub\">Federal rule in every state. State rules below may add to it.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Phosphorus soil analysis for manure application<\/span><span class=\"ssr-sub\">Federal CAFO effluent guidelines, nutrient management plan<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> Soil phosphorus at least once every 5 years. Manure nitrogen and phosphorus at least once a year.<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Depth\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/www.govinfo.gov\/content\/pkg\/CFR-2025-title40-vol31\/xml\/CFR-2025-title40-vol31-sec412-4.xml\" data-ssr-src rel=\"noopener\">40 CFR \u00a7 412.4 (govinfo, 2025 edition)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-40-cfr-412-cafo-soil-phosphorus\" data-c=\"United States\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Concentrated animal feeding operations that land-apply manure, litter or process wastewater, at or above these sizes: 700 mature dairy cows; 1,000 other cattle or veal calves; 2,500 swine of 55 lb or more, or 10,000 smaller swine; 55,000 turkeys; 30,000 laying hens or broilers with a liquid manure system; 82,000 laying hens or 125,000 other chickens with another manure system.<\/dd><\/div><div><dt>Outside the rule<\/dt><dd>Operations below those sizes, and any operation that does not land-apply manure, litter or process wastewater.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>40 CFR Part 412, Concentrated Animal Feeding Operations Point Source Category, \u00a7 412.4(c)(3), with \u00a7 412.30 and \u00a7 412.40<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.govinfo.gov\/content\/pkg\/CFR-2025-title40-vol31\/xml\/CFR-2025-title40-vol31-sec412-4.xml\" data-ssr-src rel=\"noopener\">40 CFR \u00a7 412.4 (govinfo, 2025 edition)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><li><a href=\"https:\/\/www.govinfo.gov\/content\/pkg\/CFR-2025-title40-vol31\/xml\/CFR-2025-title40-vol31-sec412-30.xml\" data-ssr-src rel=\"noopener\">40 CFR \u00a7 412.30, applicability<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><li><a href=\"https:\/\/www.govinfo.gov\/content\/pkg\/CFR-2025-title40-vol31\/xml\/CFR-2025-title40-vol31-sec412-40.xml\" data-ssr-src rel=\"noopener\">40 CFR \u00a7 412.40, applicability<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-40-cfr-412-cafo-soil-phosphorus\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-al-adem-335-6-7-afo-land-application\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-AL\" data-p=\"fertility\" data-s=\"conditional\" data-m=\"representative\" data-q=\"united states | alabama | adem animal feeding operation rules (afo and cafo) | soil tests on fields that receive animal waste | alabama administrative code, chapter 335-6-7 (adem, animal feeding operations) | rule 335-6-7-.26(5) and rule 335-6-7-.03 | ph, p, k, mg | alabama | adem | afo | cafo | usa | united states\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Alabama<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Alabama only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil tests on fields that receive animal waste<\/span><span class=\"ssr-sub\">ADEM animal feeding operation rules (AFO and CAFO)<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> At a frequency that meets NRCS technical standards and guidelines, and as often as needed to protect groundwater and surface water<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">Accepted standard soil sampling procedures, on each field.<\/td><td role=\"cell\" data-label=\"Depth\">0 to 3 inches in sod crops. Depth of the plow layer in cultivated crops.<\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/admincode.legislature.state.al.us\/api\/chapter\/335-6-7\" data-ssr-src rel=\"noopener\">Ala. Admin. Code ch. 335-6-7 (Alabama Legislative Services Agency)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-al-adem-335-6-7-afo-land-application\" data-c=\"Alabama\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Animal feeding operations in Alabama, for each field where animal waste or wastewater has been or will be land applied.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>Methods in the Southern Region soil test bulletins (Southern Cooperative Service Bulletins 289 and 374), the Alabama crop soil test recommendations (Auburn Series No. 178), or another method the Director approves. Analyses include pH and lime requirement, extractable phosphorus, and extractable zinc, copper, arsenic and other selected metals where the qualified credentialed professional finds them probable at high levels.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Alabama Administrative Code, Chapter 335-6-7 (ADEM, animal feeding operations), Rule 335-6-7-.26(5) and Rule 335-6-7-.03<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/admincode.legislature.state.al.us\/api\/chapter\/335-6-7\" data-ssr-src rel=\"noopener\">Ala. Admin. Code ch. 335-6-7 (Alabama Legislative Services Agency)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-al-adem-335-6-7-afo-land-application\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-al-extension-precision-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-AL\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"grid zone\" data-q=\"united states | alabama | alabama cooperative extension system, precision soil sampling advice | grid and zone sampling for lime and fertilizer | aces anr-3181, precision soil sampling strategies for site-specific nutrient management (2025) | ph, p, k, mg | alabama | aces | auburn | alabama extension | usa | united states\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Alabama<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Alabama only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Grid and zone sampling for lime and fertilizer<\/span><span class=\"ssr-sub\">Alabama Cooperative Extension System, precision soil sampling advice<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> Grid sampling every 4 to 5 years, with zone sampling in between<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">Grids of 2.5 acres or less. Up to 5 acres in relatively uniform fields. Zones of 10 acres or less.<\/td><td role=\"cell\" data-label=\"Method\">Grid sampling to set a baseline in new or problem fields, then management zones. Hand sampling: cores in a circle around the grid center. Automated samplers: an S pattern through the grid. A zigzag through each zone.<\/td><td role=\"cell\" data-label=\"Depth\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Cores\">Eight to twelve cores per grid or zone sample. At least ten to fifteen for zones of 10 acres or less, more for larger zones.<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/www.aces.edu\/blog\/topics\/crop-production\/precision-soil-sampling-strategies-for-site-specific-nutrient-management\/\" data-ssr-src rel=\"noopener\">ACES ANR-3181, Precision Soil Sampling Strategies for Site-Specific Nutrient Management<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-al-extension-precision-soil-sampling\" data-c=\"Alabama\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for Alabama fields from the Alabama Cooperative Extension System (Auburn University and Alabama A and M). Not law.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>ACES ANR-3181, Precision Soil Sampling Strategies for Site-Specific Nutrient Management (2025)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.aces.edu\/blog\/topics\/crop-production\/precision-soil-sampling-strategies-for-site-specific-nutrient-management\/\" data-ssr-src rel=\"noopener\">ACES ANR-3181, Precision Soil Sampling Strategies for Site-Specific Nutrient Management<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-al-extension-precision-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-ak-extension-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-AK\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"pattern\" data-q=\"united states | alaska | university of alaska fairbanks cooperative extension service, soil sampling instructions | routine soil fertility sampling | uaf cooperative extension service, kenai soil test interpretation form (2019), soil sampling instructions | ph, p, k, mg | alaska | uaf | uaf extension | kenai | usa | united states\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Alaska<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Alaska only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Routine soil fertility sampling<\/span><span class=\"ssr-sub\">University of Alaska Fairbanks Cooperative Extension Service, soil sampling instructions<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">At least 13 points per sample, following the form diagram. On contour strips, 6 cores 20 feet in from the edge of the strip and 6 from the opposite side. Separate samples where soil type, past fertilizer or lime, or cropping history differ.<\/td><td role=\"cell\" data-label=\"Depth\">Tilling or plowing depth on cultivated land, or 6 inches. Pastures 3 or 4 inches.<\/td><td role=\"cell\" data-label=\"Cores\">At least 13 slices or borings per sample<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/www.uaf.edu\/ces\/agriculture\/soil\/files\/pdfs\/kenai-soil-test-interpretation-form-2019.pdf\" data-ssr-src rel=\"noopener\">UAF Cooperative Extension Service, Kenai soil test interpretation form 2019 (PDF)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-ak-extension-soil-sampling\" data-c=\"Alaska\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for Alaska fields, pastures and gardens from the University of Alaska Fairbanks Cooperative Extension Service. Not law.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>UAF Cooperative Extension Service, Kenai soil test interpretation form (2019), Soil Sampling Instructions<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.uaf.edu\/ces\/agriculture\/soil\/files\/pdfs\/kenai-soil-test-interpretation-form-2019.pdf\" data-ssr-src rel=\"noopener\">UAF Cooperative Extension Service, Kenai soil test interpretation form 2019 (PDF)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-ak-extension-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-az-extension-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-AZ\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"pattern grid zone\" data-q=\"united states | arizona | university of arizona cooperative extension, soil sampling guide | soil sampling for commercial crop production | university of arizona cooperative extension az2147, a guide to effective soil sampling for sustainable crop production (july 2025) | ph, p, k, mg | arizona | university of arizona | arizona extension | az2147 | usa | united states\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Arizona<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Arizona only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil sampling for commercial crop production<\/span><span class=\"ssr-sub\">University of Arizona Cooperative Extension, soil sampling guide<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> Regularly, if not every season, before planting each crop<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">Whole field sampling: one composite sample per 15 to 20 acres<\/td><td role=\"cell\" data-label=\"Method\">Whole field: random cores in a zigzag across the field. Grid: composites per grid cell or points at grid intersections. Zone: separate composites where variation is already known.<\/td><td role=\"cell\" data-label=\"Depth\">12 inches for vegetables such as lettuce, spinach, broccoli, celery or cantaloupes. 24 inches for cotton, alfalfa, corn or wheat. Tilled soils to tillage depth.<\/td><td role=\"cell\" data-label=\"Cores\">15 to 20 cores or scoops per site, depending on field size and the laboratory<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/extension.arizona.edu\/sites\/default\/files\/2025-09\/az2147-a-guide-to-effective-soil-sampling-for-sustainable-crop-production.pdf\" data-ssr-src rel=\"noopener\">University of Arizona Cooperative Extension AZ2147 (PDF)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-az-extension-soil-sampling\" data-c=\"Arizona\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for commercial agriculture in Arizona from the University of Arizona Cooperative Extension. Not law.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>University of Arizona Cooperative Extension AZ2147, A Guide to Effective Soil Sampling for Sustainable Crop Production (July 2025)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/extension.arizona.edu\/sites\/default\/files\/2025-09\/az2147-a-guide-to-effective-soil-sampling-for-sustainable-crop-production.pdf\" data-ssr-src rel=\"noopener\">University of Arizona Cooperative Extension AZ2147 (PDF)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-az-extension-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-ar-title-22-nutrient-surplus-area\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-AR\" data-p=\"p\" data-s=\"conditional\" data-m=\"none\" data-q=\"united states | arkansas | arkansas soil nutrient and poultry litter application and management program (nutrient surplus areas) | soil test before phosphorus fertilizer and in nutrient management plans | arkansas natural resources commission title 22, rules governing the arkansas soil nutrient and poultry litter application and management program | sections 2202.3, 2202.5, 2203.3 and 2204.2 | phosphorus | arkansas | anrc | nutrient surplus area | title 22 | poultry litter | usa | united states\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Arkansas<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Arkansas only, and within the designated nutrient surplus areas. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil test before phosphorus fertilizer and in nutrient management plans<\/span><span class=\"ssr-sub\">Arkansas Soil Nutrient and Poultry Litter Application and Management Program (nutrient surplus areas)<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Result valid<\/span> Soil tests in a nutrient management plan or poultry litter management plan: not more than 5 years old<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Depth\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/media.ark.org\/agri\/Title_22.pdf\" data-ssr-src rel=\"noopener\">ANRC Title 22 (PDF, Arkansas Department of Agriculture)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-ar-title-22-nutrient-surplus-area\" data-c=\"Arkansas\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Land in a designated nutrient surplus area. A soil test is required before commercial fertilizer containing phosphorus is applied at the protective rate. Nutrient management plans and poultry litter management plans must carry soil tests not more than five years old.<\/dd><\/div><div><dt>Outside the rule<\/dt><dd>Commercial fertilizer with nitrogen but no phosphorus may be applied without a soil test.<\/dd><\/div><div><dt>In force from<\/dt><dd>1 January 2010<\/dd><\/div><div><dt>Legal text<\/dt><dd>Arkansas Natural Resources Commission Title 22, Rules Governing the Arkansas Soil Nutrient and Poultry Litter Application and Management Program, Sections 2202.3, 2202.5, 2203.3 and 2204.2<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/media.ark.org\/agri\/Title_22.pdf\" data-ssr-src rel=\"noopener\">ANRC Title 22 (PDF, Arkansas Department of Agriculture)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-ar-title-22-nutrient-surplus-area\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-ar-extension-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-AR\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"pattern\" data-q=\"united states | arkansas | university of arkansas system division of agriculture cooperative extension, soil test advice | routine soil fertility sampling | university of arkansas cooperative extension fsa2121, test your soil for plant food and lime needs (september 2026) | ph, p, k, mg | arkansas | uaex | university of arkansas | arkansas extension | fsa2121 | usa | united states\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Arkansas<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Arkansas only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Routine soil fertility sampling<\/span><span class=\"ssr-sub\">University of Arkansas System Division of Agriculture Cooperative Extension, soil test advice<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Result valid<\/span> A test guides fertilizer for 3 or 4 years. Resample when tests are over 4 years old.<\/li><li><span class=\"k\">Repeat<\/span> Consider sampling yearly under intensive management or with several crops a year<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">Zigzag pattern preferred. Sample each field or management unit separately.<\/td><td role=\"cell\" data-label=\"Depth\">Crop fields to plowing depth, usually 4 to 6 inches. Pastures about 4 inches.<\/td><td role=\"cell\" data-label=\"Cores\">At least 12 random points per area<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/www.uaex.uada.edu\/publications\/pdf\/FSA-2121.pdf\" data-ssr-src rel=\"noopener\">University of Arkansas Cooperative Extension FSA2121 (PDF)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-ar-extension-soil-sampling\" data-c=\"Arkansas\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for Arkansas fields, pastures, lawns and gardens from the University of Arkansas System Division of Agriculture. Not law.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>University of Arkansas Cooperative Extension FSA2121, Test Your Soil for Plant Food and Lime Needs (September 2026)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.uaex.uada.edu\/publications\/pdf\/FSA-2121.pdf\" data-ssr-src rel=\"noopener\">University of Arkansas Cooperative Extension FSA2121 (PDF)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-ar-extension-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-ca-cv-dairy-general-order-soil-phosphorus\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-CA\" data-p=\"p\" data-s=\"conditional\" data-m=\"none\" data-q=\"united states | california | central valley water board, dairy general order (waste discharge requirements for existing milk cow dairies) | soil phosphorus monitoring on dairy land application areas | central valley regional water quality control board order r5-2013-0122, reissued waste discharge requirements general order for existing milk cow dairies | monitoring and reporting program, table 2 (nutrient monitoring, soil) | phosphorus | california | central valley | dairy general order | r5-2013-0122 | water board | usa | united states\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">California<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">California, Central Valley Region only: existing milk cow dairies under Order R5-2013-0122. Other regions and states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil phosphorus monitoring on dairy land application areas<\/span><span class=\"ssr-sub\">Central Valley Water Board, Dairy General Order (waste discharge requirements for existing milk cow dairies)<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> Once every 5 years from each land application area. May be spread over 5 years by sampling 20 percent of the areas each year.<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Depth\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/www.waterboards.ca.gov\/centralvalley\/board_decisions\/adopted_orders\/general_orders\/r5-2013-0122.pdf\" data-ssr-src rel=\"noopener\">Central Valley Water Board Order R5-2013-0122 with Monitoring and Reporting Program (PDF)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-ca-cv-dairy-general-order-soil-phosphorus\" data-c=\"California\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Existing milk cow dairies in the Central Valley Region covered by the General Order, on each land application area.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>Laboratory analysis for soluble phosphorus. Spring and fall pre-plant nitrate, organic matter and other tests at 0 to 1 foot and 1 to 2 feet are recommended but not required.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Central Valley Regional Water Quality Control Board Order R5-2013-0122, Reissued Waste Discharge Requirements General Order for Existing Milk Cow Dairies, Monitoring and Reporting Program, Table 2 (Nutrient Monitoring, Soil)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.waterboards.ca.gov\/centralvalley\/board_decisions\/adopted_orders\/general_orders\/r5-2013-0122.pdf\" data-ssr-src rel=\"noopener\">Central Valley Water Board Order R5-2013-0122 with Monitoring and Reporting Program (PDF)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-ca-cv-dairy-general-order-soil-phosphorus\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-ca-uc-soil-sampling-guidelines\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-CA\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"pattern\" data-q=\"united states | california | university of california cooperative extension, guidelines for soil sampling | general fertility and nitrate sampling | uc cooperative extension (small farms advisor, yolo, solano and sacramento counties), guidelines for soil sampling | ph, p, k, mg | california | uc anr | ucce | uc cooperative extension | usa | united states\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">California<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">California only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">General fertility and nitrate sampling<\/span><span class=\"ssr-sub\">University of California Cooperative Extension, guidelines for soil sampling<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> General fertility: every 3 years is common<\/li><li><span class=\"k\">Season<\/span> Spring or fall, at the same time each year, not after fertilizer<\/li><li><span class=\"k\">Repeat<\/span> Nitrate-N: every year, preplant or before fertilization<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">W-shaped pattern, a zigzag across the whole block, or a diagonal line. Divide non-uniform fields into blocks by cropping history and varieties, observed differences in crop development, and soil series.<\/td><td role=\"cell\" data-label=\"Depth\">General fertility: 6 inches or tilling depth. Nitrate-N: 6 inches to 3 feet, by rooting depth and leaching risk.<\/td><td role=\"cell\" data-label=\"Cores\">At least 20 cores per block<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/class.ucanr.edu\/sites\/default\/files\/2018-12\/295585.pdf\" data-ssr-src rel=\"noopener\">UCCE, Guidelines for Soil Sampling (PDF, UC ANR)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-ca-uc-soil-sampling-guidelines\" data-c=\"California\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for California growers from University of California Cooperative Extension (UC Agriculture and Natural Resources). Not law.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>UC Cooperative Extension (Small Farms Advisor, Yolo, Solano and Sacramento Counties), Guidelines for Soil Sampling<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/class.ucanr.edu\/sites\/default\/files\/2018-12\/295585.pdf\" data-ssr-src rel=\"noopener\">UCCE, Guidelines for Soil Sampling (PDF, UC ANR)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-ca-uc-soil-sampling-guidelines\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-co-reg-81-cafo-land-application\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-CO\" data-p=\"fertility\" data-s=\"conditional\" data-m=\"none\" data-q=\"united states | colorado | colorado animal feeding operations control regulation (regulation no. 81), facility management plan for non-permitted cafos | soil tests on land that receives cafo manure or wastewater | 5 ccr 1002-81, regulation no. 81, animal feeding operations control regulation (water quality control commission) | section 81.6(2)(a)(ii) | ph, p, k, mg | colorado | regulation 81 | reg 81 | cdphe | cafo | usa | united states\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Colorado<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Colorado only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil tests on land that receives CAFO manure or wastewater<\/span><span class=\"ssr-sub\">Colorado Animal Feeding Operations Control Regulation (Regulation No. 81), facility management plan for non-permitted CAFOs<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> At least once a year for available nutrients, including nitrate-nitrogen<\/li><li><span class=\"k\">Repeat<\/span> Top one foot for available phosphorus at least once every 5 years, or as section 81.6(2)(b)(v) sets for phosphorus transport risk reassessments<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Depth\">Top one foot for the available phosphorus test. No depth set for the annual test.<\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/www.coloradosos.gov\/CCR\/GenerateRulePdf.do?ruleVersionId=7215\" data-ssr-src rel=\"noopener\">5 CCR 1002-81, official PDF, Colorado Secretary of State (version effective 31 July 2017)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-co-reg-81-cafo-land-application\" data-c=\"Colorado\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Operators of non-permitted CAFOs in Colorado, on land application sites for manure and wastewater, as part of the facility management plan.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>Available nutrients including nitrate-nitrogen every year; available phosphorus every five years. Results are used to set manure and wastewater application rates.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>5 CCR 1002-81, Regulation No. 81, Animal Feeding Operations Control Regulation (Water Quality Control Commission), Section 81.6(2)(a)(ii)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.coloradosos.gov\/CCR\/GenerateRulePdf.do?ruleVersionId=7215\" data-ssr-src rel=\"noopener\">5 CCR 1002-81, official PDF, Colorado Secretary of State (version effective 31 July 2017)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-co-reg-81-cafo-land-application\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-co-csu-soil-sampling-instructions\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-CO\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"pattern\" data-q=\"united states | colorado | colorado state university soil, water and plant testing laboratory, soil sampling instructions | routine soil fertility sampling | colorado state university soil, water and plant testing laboratory, soil sampling instructions (march 2026) | ph, p, k, mg | colorado | csu | colorado state university | csu extension | usa | united states\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Colorado<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Colorado only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Routine soil fertility sampling<\/span><span class=\"ssr-sub\">Colorado State University Soil, Water and Plant Testing Laboratory, soil sampling instructions<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">Systematic or random sampling pattern. Separate samples for areas that differ in crop growth, soil color, or fertilizer and amendment history.<\/td><td role=\"cell\" data-label=\"Depth\">Agricultural fields 0 to 8 inches<\/td><td role=\"cell\" data-label=\"Cores\">10 to 15 subsamples per composite sample<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/agsci.colostate.edu\/soiltestinglab\/wp-content\/uploads\/sites\/140\/2026\/03\/SOIL-SAMPLING-INSTRUCTIONS-03052026.pdf\" data-ssr-src rel=\"noopener\">CSU Soil, Water and Plant Testing Laboratory, Soil Sampling Instructions (PDF)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-co-csu-soil-sampling-instructions\" data-c=\"Colorado\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for Colorado fields, gardens and lawns from the Colorado State University soil testing laboratory, distributed through CSU Extension offices. Not law.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Colorado State University Soil, Water and Plant Testing Laboratory, Soil Sampling Instructions (March 2026)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/agsci.colostate.edu\/soiltestinglab\/wp-content\/uploads\/sites\/140\/2026\/03\/SOIL-SAMPLING-INSTRUCTIONS-03052026.pdf\" data-ssr-src rel=\"noopener\">CSU Soil, Water and Plant Testing Laboratory, Soil Sampling Instructions (PDF)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-co-csu-soil-sampling-instructions\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-ct-deep-cafo-gp-soil-phosphorus\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-CT\" data-p=\"p\" data-s=\"conditional\" data-m=\"none\" data-q=\"united states | connecticut | connecticut deep general permit for concentrated animal feeding operations (cafo gp) | soil phosphorus test on large cafo land application fields | connecticut deep general permit for concentrated animal feeding operations, deep-wped-gp-030, issued under section 22a-430b of the connecticut general statutes | section 5(f)(1)(a) | phosphorus | connecticut | deep | cafo general permit | cafo gp | usa | united states\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Connecticut<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Connecticut only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil phosphorus test on Large CAFO land application fields<\/span><span class=\"ssr-sub\">Connecticut DEEP General Permit for Concentrated Animal Feeding Operations (CAFO GP)<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> Soil analyzed for phosphorus at least once every 5 years<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Depth\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/portal.ct.gov\/-\/media\/deep\/permits_and_licenses\/water_discharge_general_permits\/cafogp.pdf\" data-ssr-src rel=\"noopener\">Connecticut DEEP, CAFO General Permit DEEP-WPED-GP-030 (PDF)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-ct-deep-cafo-gp-soil-phosphorus\" data-c=\"Connecticut\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Large CAFOs registered under the Connecticut CAFO General Permit (DEEP-WPED-GP-030) that land apply manure, litter, digestate or agricultural wastewater.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>Phosphorus content. Results are used to set manure, litter, digestate and wastewater application rates.<\/dd><\/div><div><dt>In force from<\/dt><dd>1 January 2023<\/dd><\/div><div><dt>Legal text<\/dt><dd>Connecticut DEEP General Permit for Concentrated Animal Feeding Operations, DEEP-WPED-GP-030, issued under section 22a-430b of the Connecticut General Statutes, Section 5(f)(1)(A)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/portal.ct.gov\/-\/media\/deep\/permits_and_licenses\/water_discharge_general_permits\/cafogp.pdf\" data-ssr-src rel=\"noopener\">Connecticut DEEP, CAFO General Permit DEEP-WPED-GP-030 (PDF)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-ct-deep-cafo-gp-soil-phosphorus\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-ct-uconn-soil-sampling-instructions\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-CT\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"representative\" data-q=\"united states | connecticut | university of connecticut soil nutrient analysis laboratory, soil nutrient sampling instructions | routine soil fertility sampling | uconn george leigh minor plant and soil health center, soil nutrient sampling instructions | ph, p, k, mg | connecticut | uconn | uconn extension | university of connecticut | usa | united states\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Connecticut<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Connecticut only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Routine soil fertility sampling<\/span><span class=\"ssr-sub\">University of Connecticut Soil Nutrient Analysis Laboratory, soil nutrient sampling instructions<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Season<\/span> Any time the ground is not frozen. Fall is highly recommended.<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">No sample may represent more than 15 acres<\/td><td role=\"cell\" data-label=\"Method\">12 or more random, evenly distributed spots. Separate samples for areas that differ in topography, drainage, texture, crop growth or use, soil color, or fertilizer history.<\/td><td role=\"cell\" data-label=\"Depth\">Crop field 6 to 8 inches or the plough layer depth. Grass 3 to 4 inches.<\/td><td role=\"cell\" data-label=\"Cores\">12 or more cores or slices per sample<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/plantsoilcenter.cahnr.uconn.edu\/sampling-instructions\/\" data-ssr-src rel=\"noopener\">UConn Plant and Soil Health Center, Sampling Instructions<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-ct-uconn-soil-sampling-instructions\" data-c=\"Connecticut\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for Connecticut farms, gardens and lawns from the University of Connecticut soil testing laboratory. Not law.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>UConn George Leigh Minor Plant and Soil Health Center, Soil Nutrient Sampling Instructions<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/plantsoilcenter.cahnr.uconn.edu\/sampling-instructions\/\" data-ssr-src rel=\"noopener\">UConn Plant and Soil Health Center, Sampling Instructions<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-ct-uconn-soil-sampling-instructions\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-de-nutrient-management-law-2247\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-DE\" data-p=\"fertility\" data-s=\"conditional\" data-m=\"none\" data-q=\"united states | delaware | delaware nutrient management program (delaware nutrient management commission) | soil test results in the nutrient management plan | delaware code, title 3, chapter 22 (nutrient management) | \u00a7 2247 (nutrient management plans) and \u00a7 2202 (definitions) | ph, p, k, mg | delaware | nutrient management law | delaware nutrient management commission | title 3 chapter 22 | usa | united states\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Delaware<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Delaware only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil test results in the nutrient management plan<\/span><span class=\"ssr-sub\">Delaware Nutrient Management Program (Delaware Nutrient Management Commission)<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Depth\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/delcode.delaware.gov\/title3\/title3.pdf\" data-ssr-src rel=\"noopener\">Delaware Code Title 3 (PDF), Chapter 22<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-de-nutrient-management-law-2247\" data-c=\"Delaware\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Animal feeding operations over 8 animal units, and anyone who owns, leases or controls more than 10 acres where nutrients are applied. Their nutrient management plan must include the results of applicable soil analyses, and records of implementation must include soil test results. The plan is updated at least every 3 years or on significant changes in operations; the Act sets no soil sampling interval.<\/dd><\/div><div><dt>Outside the rule<\/dt><dd>Nutrient handlers applying to turf of more than 1\/4 acre but less than 10 acres need no plan, but stay subject to the limits in the title and the regulations. Animal feeding operations that use no other nutrients and do not land apply their animal waste may substitute an animal waste management plan. County, municipal and industrial facilities permitted by DNREC under the land treatment of wastes rules are exempt from the chapter.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>Phosphorus is read as the Mehlich 3 fertility index value (FIV). Fields above FIV 499 need a phosphorus site index assessment before phosphorus is applied.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Delaware Code, Title 3, Chapter 22 (Nutrient Management), \u00a7 2247 (nutrient management plans) and \u00a7 2202 (definitions)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/delcode.delaware.gov\/title3\/title3.pdf\" data-ssr-src rel=\"noopener\">Delaware Code Title 3 (PDF), Chapter 22<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-de-nutrient-management-law-2247\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-de-dda-practice-standard-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-DE\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"representative\" data-q=\"united states | delaware | delaware nutrient management program, delaware conservation practice standard: soil sampling and analysis | soil sampling and analysis for nutrient management plans | delaware department of agriculture, delaware conservation practice standard, soil sampling and analysis (october 2016) | ph, p, k, mg | delaware | delaware department of agriculture | nutrient management program | practice standard | usa | united states\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Delaware<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Delaware only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil sampling and analysis for nutrient management plans<\/span><span class=\"ssr-sub\">Delaware Nutrient Management Program, Delaware Conservation Practice Standard: Soil Sampling and Analysis<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Area per sample\">No more than 40 acres per sample<\/td><td role=\"cell\" data-label=\"Method\">Smaller areas that differ in color, texture, drainage class, management or productivity are sampled separately.<\/td><td role=\"cell\" data-label=\"Depth\">Approximately 8 inches<\/td><td role=\"cell\" data-label=\"Cores\">A minimum of 15 to 25 cores per sample<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/agriculture.delaware.gov\/wp-content\/uploads\/sites\/108\/2017\/12\/Soil-Sampling-and-Analysis.pdf\" data-ssr-src rel=\"noopener\">Delaware Department of Agriculture, Practice Standard Soil Sampling and Analysis (PDF)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-de-dda-practice-standard-soil-sampling\" data-c=\"Delaware\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Practice standard of the Delaware Nutrient Management Program, applying among other cases as part of any nutrient management plan. Published as a program standard, not as law.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>Laboratories enrolled each year in a proficiency assessment program such as NAPT or ALP. Results in ppm or University of Delaware Fertility Index Value.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Delaware Department of Agriculture, Delaware Conservation Practice Standard, Soil Sampling and Analysis (October 2016)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/agriculture.delaware.gov\/wp-content\/uploads\/sites\/108\/2017\/12\/Soil-Sampling-and-Analysis.pdf\" data-ssr-src rel=\"noopener\">Delaware Department of Agriculture, Practice Standard Soil Sampling and Analysis (PDF)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-de-dda-practice-standard-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-de-extension-commercial-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-DE\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"representative\" data-q=\"united states | delaware | university of delaware cooperative extension, delaware soil testing program | soil sampling for commercial crop production | university of delaware soil testing program, how to take a soil sample for commercial crop production | ph, p, k, mg | delaware | university of delaware | ud extension | delaware soil testing program | usa | united states\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Delaware<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Delaware only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil sampling for commercial crop production<\/span><span class=\"ssr-sub\">University of Delaware Cooperative Extension, Delaware Soil Testing Program<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> Annual crops: every year, or every 2 to 3 years where fertility is very high<\/li><li><span class=\"k\">Repeat<\/span> Perennial crops such as alfalfa or pasture: before seeding, then at least every 3 years<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">In general, 40 acres at most per sample<\/td><td role=\"cell\" data-label=\"Method\">One soil type or condition per sample. Separate samples for different soils or management histories. Avoid wet spots, dead furrows, stockpile sites and old fertilizer bands.<\/td><td role=\"cell\" data-label=\"Depth\">Plow depth, usually 6 to 9 inches. No-till and reduced tillage also 6 to 9 inches.<\/td><td role=\"cell\" data-label=\"Cores\">15 to 25 cores per sample<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/www.udel.edu\/academics\/colleges\/canr\/cooperative-extension\/environmental-stewardship\/soil-testing\/general-information\/\" data-ssr-src rel=\"noopener\">University of Delaware Soil Testing Program, General Information<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-de-extension-commercial-soil-sampling\" data-c=\"Delaware\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for commercial crop production in Delaware from University of Delaware Cooperative Extension. Not law.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>University of Delaware Soil Testing Program, How to Take a Soil Sample for Commercial Crop Production<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.udel.edu\/academics\/colleges\/canr\/cooperative-extension\/environmental-stewardship\/soil-testing\/general-information\/\" data-ssr-src rel=\"noopener\">University of Delaware Soil Testing Program, General Information<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-de-extension-commercial-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-fl-fdacs-vac-bmp-soil-test-before-p\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-FL\" data-p=\"fertility\" data-s=\"conditional\" data-m=\"none\" data-q=\"united states | florida | fdacs agricultural best management practices, florida vegetable and agronomic crop (vac) operations | soil or tissue tests to plan fertilizer on enrolled vegetable and agronomic crop land | fdacs florida vegetable and agronomic crop operations bmp manual, 2024 edition (fdacs-p-01268, rev. 12\/24), incorporated in rule 5m-8.002, f.a.c. | bmps 1.2.1 and 1.2.2 (right rate), the guidance text under bmp 1.2.1, and appendix 2 | ph, p, k, mg | florida | fdacs | bmp | bmap | vegetable and agronomic crops | vac bmp manual | 5m-8 | usa | united states\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Florida<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Florida only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil or tissue tests to plan fertilizer on enrolled vegetable and agronomic crop land<\/span><span class=\"ssr-sub\">FDACS agricultural Best Management Practices, Florida Vegetable and Agronomic Crop (VAC) Operations<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Result valid<\/span> Manual Guidance text under BMP 1.2.1, not the checklist BMP: a soil test less than one year old, showing a need for phosphorus, before phosphorus is applied (crops other than multi-year crops). The manual says its narrative creates no obligation beyond the checklist BMPs, and the checklist BMP sets no age for the test.<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Depth\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/www.fdacs.gov\/content\/download\/77230\/file\/vegAgCropBMP-loRes.pdf\" data-ssr-src rel=\"noopener\">FDACS VAC BMP Manual, 2024 Edition (PDF), incorporated in Rule 5M-8.002, F.A.C.<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-fl-fdacs-vac-bmp-soil-test-before-p\" data-c=\"Florida\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Vegetable and agronomic crop producers enrolled in the FDACS BMP Program. BMP 1.2.1 has them perform soil tests, tissue tests, or both to plan and manage fertilizer applications. Enrollment, or water quality monitoring instead, is required by Florida law inside basin management action plan (BMAP) areas.<\/dd><\/div><div><dt>Outside the rule<\/dt><dd>In the same Guidance text, multi-year crops may use a calibration curve from the soil test taken before planting for later phosphorus applications.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>An extraction method listed in Appendix 2 for the soil type: Mehlich-3, AB-DTPA, water, Bray 1 or 2, ammonium acetate or Mehlich-1. Other methods need FDACS approval and a documented justification.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>FDACS Florida Vegetable and Agronomic Crop Operations BMP Manual, 2024 Edition (FDACS-P-01268, rev. 12\/24), incorporated in Rule 5M-8.002, F.A.C., BMPs 1.2.1 and 1.2.2 (Right Rate), the Guidance text under BMP 1.2.1, and Appendix 2<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.fdacs.gov\/content\/download\/77230\/file\/vegAgCropBMP-loRes.pdf\" data-ssr-src rel=\"noopener\">FDACS VAC BMP Manual, 2024 Edition (PDF), incorporated in Rule 5M-8.002, F.A.C.<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-fl-fdacs-vac-bmp-soil-test-before-p\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-fl-ifas-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-FL\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"representative\" data-q=\"united states | florida | uf\/ifas extension soil testing laboratory, sampling advice | routine soil fertility sampling | uf\/ifas extension sl547\/ss763, how to read reports from the uf\/ifas extension soil testing laboratory | ph, p, k, mg | florida | uf ifas | ifas extension | university of florida | estl | usa | united states\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Florida<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Florida only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Routine soil fertility sampling<\/span><span class=\"ssr-sub\">UF\/IFAS Extension Soil Testing Laboratory, sampling advice<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> Soil pH at least once a year, if not every growing season<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">Up to 40 acres of a field section in commercial agriculture, uniform in management and topography<\/td><td role=\"cell\" data-label=\"Method\">One composite per area uniform in management and topography. Separate samples for areas that differ.<\/td><td role=\"cell\" data-label=\"Depth\">Top 6 inches for most agronomic uses<\/td><td role=\"cell\" data-label=\"Cores\">8 to 15 locations per composite sample<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/ask.ifas.ufl.edu\/publication\/SS763\" data-ssr-src rel=\"noopener\">UF\/IFAS Extension SL547\/SS763<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-fl-ifas-soil-sampling\" data-c=\"Florida\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for Florida growers and landscapes from UF\/IFAS Extension (University of Florida). Not law.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>Mehlich-3 extraction for mineral soils up to pH 7.4; AB-DTPA for alkaline soils outside Miami-Dade County.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>UF\/IFAS Extension SL547\/SS763, How to Read Reports from the UF\/IFAS Extension Soil Testing Laboratory<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/ask.ifas.ufl.edu\/publication\/SS763\" data-ssr-src rel=\"noopener\">UF\/IFAS Extension SL547\/SS763<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-fl-ifas-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-ga-uga-soil-test-handbook-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-GA\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"representative zone\" data-q=\"united states | georgia | university of georgia cooperative extension, soil test handbook for georgia | routine soil fertility sampling | uga cooperative extension special bulletin 62, soil test handbook for georgia | ph, p, k, mg | georgia | uga | uga extension | university of georgia | soil test handbook | usa | united states\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Georgia<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Georgia only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Routine soil fertility sampling<\/span><span class=\"ssr-sub\">University of Georgia Cooperative Extension, Soil Test Handbook for Georgia<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> Every 2 to 3 years in most situations. Every year for high-value cash crops, fields testing high in P and K with none applied, or over 150 lb N per acre a year.<\/li><li><span class=\"k\">Season<\/span> One to six months before planting, at the same time each year<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">Most fields 5 to not more than 15 acres per sample. Smaller areas where soil, slope, drainage or management differ.<\/td><td role=\"cell\" data-label=\"Method\">Cores at random over the area. Precision methods sample field subsections by soil type, topography, or crop growth or yield maps.<\/td><td role=\"cell\" data-label=\"Depth\">Plowed fields to plow depth (recommendations based on 6 inches for fertilizer, 8 inches for lime). Pastures and no-till 4 inches.<\/td><td role=\"cell\" data-label=\"Cores\">A minimum of 10 to 20 cores per composite. Earlier sampling studies found 20 cores needed for a 20-acre field, 15 for 10 acres and 10 for 5 acres.<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/fieldreport.caes.uga.edu\/wp-content\/uploads\/2025\/08\/SB-62_2.pdf\" data-ssr-src rel=\"noopener\">UGA Cooperative Extension, Soil Test Handbook for Georgia (PDF)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-ga-uga-soil-test-handbook-sampling\" data-c=\"Georgia\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for Georgia fields, pastures and orchards from University of Georgia Cooperative Extension. Not law.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>UGA Cooperative Extension Special Bulletin 62, Soil Test Handbook for Georgia<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/fieldreport.caes.uga.edu\/wp-content\/uploads\/2025\/08\/SB-62_2.pdf\" data-ssr-src rel=\"noopener\">UGA Cooperative Extension, Soil Test Handbook for Georgia (PDF)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-ga-uga-soil-test-handbook-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-hi-ctahr-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-HI\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"pattern\" data-q=\"united states | hawaii | university of hawaii ctahr, guide to soil testing | routine soil fertility sampling | university of hawaii at manoa ctahr, a guide to soil testing for hawaii's residents (hue, uchida and ho) | ph, p, k, mg | hawaii | hawai'i | ctahr | university of hawaii | adsc | usa | united states\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Hawaii<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Hawaii only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Routine soil fertility sampling<\/span><span class=\"ssr-sub\">University of Hawaii CTAHR, guide to soil testing<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> At least once every 2 years<\/li><li><span class=\"k\">Season<\/span> Two to three months before planting<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">Larger areas such as pastures or orchards: uniform soil-test areas of 1 to 5 acres each<\/td><td role=\"cell\" data-label=\"Method\">Map the area into uniform test areas; separate samples for different slope, soil color, drainage, texture or cropping history. Cores taken at random, for example in a zigzag.<\/td><td role=\"cell\" data-label=\"Depth\">4 inches for no-till fields and established pasture. 8 inches for conventionally tilled fields. Tree crops 0 to 8 inches plus a subsoil sample from 8 to 24 inches.<\/td><td role=\"cell\" data-label=\"Cores\">10 to 15 subsamples per composite sample<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/www3.ctahr.hawaii.edu\/TPSS\/research_extension\/rxsoil\/soilsample.htm\" data-ssr-src rel=\"noopener\">UH CTAHR, A Guide To Soil Testing For Hawaii&#8217;s Residents<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-hi-ctahr-soil-sampling\" data-c=\"Hawaii\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for Hawaii farms, pastures, orchards and gardens from the University of Hawaii College of Tropical Agriculture and Human Resources. Not law.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>University of Hawaii at Manoa CTAHR, A Guide To Soil Testing For Hawaii&#8217;s Residents (Hue, Uchida and Ho)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www3.ctahr.hawaii.edu\/TPSS\/research_extension\/rxsoil\/soilsample.htm\" data-ssr-src rel=\"noopener\">UH CTAHR, A Guide To Soil Testing For Hawaii&#8217;s Residents<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-hi-ctahr-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-id-idapa-02-04-30-nmp-soil-samples\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-ID\" data-p=\"fertility\" data-s=\"conditional\" data-m=\"representative\" data-q=\"united states | idaho | idaho state department of agriculture, environmental and nutrient management rules | annual soil samples on fields that receive livestock waste | idapa 02.04.30, rules governing environmental and nutrient management (idaho department of agriculture) | sections 150, 151, 152, 104 and 110 | ph, p, k, mg | idaho | idapa 02.04.30 | isda | nutrient management plan | certified soil sampler | dairy | cafo | usa | united states\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Idaho<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Idaho only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Annual soil samples on fields that receive livestock waste<\/span><span class=\"ssr-sub\">Idaho State Department of Agriculture, Environmental and Nutrient Management rules<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> Every year, on all fields that received livestock waste, manure or process wastewater from the operation<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">Representative samples taken by a Certified Soil Sampler using the methods of University of Idaho Soil Sampling Bulletin 704 (revised August 1997), incorporated by reference.<\/td><td role=\"cell\" data-label=\"Depth\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/adminrules.idaho.gov\/rules\/current\/02\/020430.pdf\" data-ssr-src rel=\"noopener\">IDAPA 02.04.30 (PDF, Idaho Office of the Administrative Rules Coordinator)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-id-idapa-02-04-30-nmp-soil-samples\" data-c=\"Idaho\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Facilities required to keep a nutrient management plan: licensed dairies, beef cattle feeding operations and poultry operations required to have an NMP, and commercial truck wash operations, on every field where their livestock waste, manure or process wastewater was land applied.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>An approved laboratory: one with valid certification from the North American Proficiency Testing Program under the Soil Science Society of America.<\/dd><\/div><div><dt>Field identifiers<\/dt><dd>Where an alternate depth is used for resource concerns, the sampler marks the depth on every sample and lab submission form.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>IDAPA 02.04.30, Rules Governing Environmental and Nutrient Management (Idaho Department of Agriculture), Sections 150, 151, 152, 104 and 110<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/adminrules.idaho.gov\/rules\/current\/02\/020430.pdf\" data-ssr-src rel=\"noopener\">IDAPA 02.04.30 (PDF, Idaho Office of the Administrative Rules Coordinator)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-id-idapa-02-04-30-nmp-soil-samples\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-id-extension-soil-testing-bul915\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-ID\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"representative\" data-q=\"united states | idaho | university of idaho extension, soil testing advice | soil testing to guide fertilizer management | university of idaho extension bul 915, soil testing to guide fertilizer management (october 2023) | ph, p, k, mg | idaho | university of idaho | ui extension | bul 915 | usa | united states\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Idaho<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Idaho only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil testing to guide fertilizer management<\/span><span class=\"ssr-sub\">University of Idaho Extension, soil testing advice<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> Every year for best results; at least once each crop rotation cycle<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">Divide each field into sampling units; take cores at random, meandering or zigzagging through each unit.<\/td><td role=\"cell\" data-label=\"Depth\">Fit to crop rooting depth; most fertilizer guides are based on 2 ft. Beans and sugar beets 2 ft. Potatoes 1 ft. Wheat fields would benefit from sampling to 5 ft in 1 ft increments.<\/td><td role=\"cell\" data-label=\"Cores\">By field size: under 5 acres 15; 5 to 10 acres 18; 10 to 25 acres 20; 25 to 50 acres 25; over 50 acres 30. Never fewer than 10.<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/content-hub.uidaho.edu\/api\/public\/content\/1f894f0995bd419f8143f28ac6169002?v=553ad13d\" data-ssr-src rel=\"noopener\">University of Idaho Extension BUL 915 (PDF)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-id-extension-soil-testing-bul915\" data-c=\"Idaho\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for Idaho fields from University of Idaho Extension. Not law.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>University of Idaho Extension BUL 915, Soil Testing to Guide Fertilizer Management (October 2023)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/content-hub.uidaho.edu\/api\/public\/content\/1f894f0995bd419f8143f28ac6169002?v=553ad13d\" data-ssr-src rel=\"noopener\">University of Idaho Extension BUL 915 (PDF)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-id-extension-soil-testing-bul915\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-il-extension-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-IL\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"grid zone\" data-q=\"united states | illinois | university of illinois extension, soil sampling advice (from the illinois agronomy handbook, chapter 8) | soil sampling for ph, phosphorus and potassium | university of illinois extension, soil sampling (illinois agronomy handbook, chapter 8: managing soil ph and crop nutrients) | ph, p, k, mg | illinois | illinois extension | university of illinois | illinois agronomy handbook | usa | united states\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Illinois<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Illinois only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil sampling for pH, phosphorus and potassium<\/span><span class=\"ssr-sub\">University of Illinois Extension, soil sampling advice (from the Illinois Agronomy Handbook, Chapter 8)<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> Every 2 to 4 years when soils are at optimum fertility<\/li><li><span class=\"k\">Season<\/span> After harvest in the fall is ideal; same time of year each time<\/li><li><span class=\"k\">Wait<\/span> Avoid sampling within a few months after lime or fertilizer<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">Uniform applications: one composite per 2.5 acres. Site-specific: one per 1.1 acres. Zones seldom over 10 acres.<\/td><td role=\"cell\" data-label=\"Method\">Grid points, five cores within a 10-foot radius of each point; or zones from yield maps, canopy data, soil type and history. Sample the same points each time, located by GPS or measuring wheel.<\/td><td role=\"cell\" data-label=\"Depth\">7 inches, the depth the Illinois recommendations are calibrated to<\/td><td role=\"cell\" data-label=\"Cores\">10 to 15 cores per composite, 15 to 20 for better representation. Grid points: five cores within a 10-foot radius.<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/extension.illinois.edu\/crops\/soil-sampling\" data-ssr-src rel=\"noopener\">University of Illinois Extension, Soil Sampling<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-il-extension-soil-sampling\" data-c=\"Illinois\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for Illinois commercial crop fields from University of Illinois Extension. Not law.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>University of Illinois Extension, Soil Sampling (Illinois Agronomy Handbook, Chapter 8: Managing Soil pH and Crop Nutrients)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/extension.illinois.edu\/crops\/soil-sampling\" data-ssr-src rel=\"noopener\">University of Illinois Extension, Soil Sampling<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-il-extension-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-in-327-iac-19-cfo-soil-test\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-IN\" data-p=\"p\" data-s=\"official_guidance\" data-m=\"representative grid\" data-q=\"united states | indiana | idem guidance on the confined feeding operation (cfo) rule, 327 iac 19, manure management plan | soil phosphorus test for manure application rates | idem, guidance manual for indiana's confined feeding program (december 29, 2014; references updated october 2019 and july 2023) | manure management plan section, pp. 25 to 28 (explaining 327 iac 19-7-5(c) and 327 iac 19-14-3) | phosphorus | indiana | idem | cfo | confined feeding | 327 iac 19 | manure management plan | usa | united states\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Indiana<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Indiana only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil phosphorus test for manure application rates<\/span><span class=\"ssr-sub\">IDEM guidance on the Confined Feeding Operation (CFO) rule, 327 IAC 19, manure management plan<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Result valid<\/span> IDEM: the soil test used for a field&#8217;s manure rate must be no more than 4 years old on the date manure is applied there. A different frequency may be approved in the manure management plan.<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">IDEM: each soil test may represent no more than 20 acres (8.0937 ha)<\/td><td role=\"cell\" data-label=\"Method\">IDEM: composite samples, or averaged results, within areas of up to 20 acres, with the procedure set out in the manure management plan. Grid sampling is good practice, not required.<\/td><td role=\"cell\" data-label=\"Depth\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Cores\">IDEM: 12 to 15 plugs recommended for a composite from a 20 acre area<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/www.in.gov\/idem\/cfo\/files\/guidance_manual_cfp.pdf\" data-ssr-src rel=\"noopener\">IDEM, Guidance Manual for Indiana&#8217;s Confined Feeding Program (PDF)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-in-327-iac-19-cfo-soil-test\" data-c=\"Indiana\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>IDEM guidance for confined feeding operations (at least 300 cattle, 600 swine or sheep, 30,000 poultry or 500 horses in confinement) on the soil tests behind each field&#8217;s manure application rate. It explains the CFO rule, 327 IAC 19; it is not the rule text.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>IDEM: phosphorus is the only element the CFO rules require. Bray P1 or Mehlich 3 test, reported in ppm.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>IDEM, Guidance Manual for Indiana&#8217;s Confined Feeding Program (December 29, 2014; references updated October 2019 and July 2023), Manure Management Plan section, pp. 25 to 28 (explaining 327 IAC 19-7-5(c) and 327 IAC 19-14-3)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.in.gov\/idem\/cfo\/files\/guidance_manual_cfp.pdf\" data-ssr-src rel=\"noopener\">IDEM, Guidance Manual for Indiana&#8217;s Confined Feeding Program (PDF)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-in-327-iac-19-cfo-soil-test\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-in-purdue-extension-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-IN\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"pattern grid zone\" data-q=\"united states | indiana | purdue extension soil sampling guidelines | routine soil fertility sampling | purdue extension ay-368-w, soil sampling guidelines (november 2018) | ph, p, k, mg | indiana | purdue | purdue extension | ay-368 | usa | united states\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Indiana<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Indiana only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Routine soil fertility sampling<\/span><span class=\"ssr-sub\">Purdue Extension soil sampling guidelines<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> Once every four years in most soils. Every two years on sandy or highly managed soils (irrigated, silage or hay fields).<\/li><li><span class=\"k\">Season<\/span> When no crop is standing: spring before planting or fall after harvest, before fertilizer or lime. Keep the same season each time.<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">Whole field: at least one composite per 20 acres. Grid cells 1 to 5 acres, 2.5 acres or less works best. Zones usually 2 to 10 acres.<\/td><td role=\"cell\" data-label=\"Method\">Zig-zag pattern for whole-field sampling. Grid or zone sampling for variable-rate maps; zone sampling preferred over grid.<\/td><td role=\"cell\" data-label=\"Depth\">Conventional tillage: 0 to 8 inches. Conservation tillage: separate 0 to 4 inch sample for pH and lime, 0 to 8 inches for fertility.<\/td><td role=\"cell\" data-label=\"Cores\">10 to 20 subsamples per composite. Zones: two per acre, at least five. Grids: at least five for a 1 acre cell, 8 to 10 for 2.5 to 5 acre cells.<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/www.extension.purdue.edu\/extmedia\/AY\/AY-368-W.pdf\" data-ssr-src rel=\"noopener\">Purdue Extension AY-368-W, Soil Sampling Guidelines (PDF)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-in-purdue-extension-soil-sampling\" data-c=\"Indiana\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for Indiana fields from Purdue University Cooperative Extension Service. Not law.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>Often best to use the same laboratory every year, so year-to-year changes reflect the soil rather than differences between laboratories.<\/dd><\/div><div><dt>Field identifiers<\/dt><dd>Label each bag with field and sample number. For zone sampling, record each sample or zone location.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Purdue Extension AY-368-W, Soil Sampling Guidelines (November 2018)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.extension.purdue.edu\/extmedia\/AY\/AY-368-W.pdf\" data-ssr-src rel=\"noopener\">Purdue Extension AY-368-W, Soil Sampling Guidelines (PDF)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-in-purdue-extension-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-ia-567-65-mmp-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-IA\" data-p=\"p\" data-s=\"conditional\" data-m=\"grid zone representative\" data-q=\"united states | iowa | iowa dnr manure management plans (mmp) for confinement feeding operations | soil phosphorus and ph tests for the phosphorus index | iowa administrative code 567, chapter 65 (animal feeding operations) | rule 567-65.111(11) and 65.111(12) | phosphorus | iowa | iowa dnr | mmp | manure management plan | phosphorus index | confinement feeding operation | usa | united states\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Iowa<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Iowa only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil phosphorus and pH tests for the phosphorus index<\/span><span class=\"ssr-sub\">Iowa DNR manure management plans (MMP) for confinement feeding operations<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Result valid<\/span> Soil samples must be four years old or less<\/li><li><span class=\"k\">Repeat<\/span> A complete plan with new soil sampling for each field at least once every four years<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">No more than 10 acres per sample. One sample for a field of 15 acres or less. Up to 20 acres for the next sampling where manure went on at phosphorus-based rates.<\/td><td role=\"cell\" data-label=\"Method\">Grid, management zone or soil type sampling, among others. Procedural details may be taken from ISU Extension CROP 31-8 (published as CROP 3108), NCR-13 Report 348 or other credible soil sampling publications.<\/td><td role=\"cell\" data-label=\"Depth\">0 to 6 inches<\/td><td role=\"cell\" data-label=\"Cores\">At least 10 cores per composite sample<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/www.legis.iowa.gov\/docs\/iac\/chapter\/567.65.pdf\" data-ssr-src rel=\"noopener\">Iowa Administrative Code 567, Chapter 65 (PDF, IAC 8\/6\/25)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-ia-567-65-mmp-soil-sampling\" data-c=\"Iowa\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Anyone who must submit a manure management plan for a confinement feeding operation: construction permit applicants, owners of operations built or expanded after May 31, 1985 or building a manure storage structure, and people applying manure in Iowa from out-of-state confinement operations. Covers each field in the plan, the fields where the phosphorus index must be used.<\/dd><\/div><div><dt>Outside the rule<\/dt><dd>Small animal feeding operations (SAFO, 500 or fewer animal units), operations of 500 or fewer animal units that elect SAFO status for updated plans, construction permit applicants for an egg washwater storage structure, and research colleges for their research activities.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>Phosphorus and pH. A laboratory enrolled in the IDALS soil testing certification program. Bray-1 phosphorus not accepted where soil pH is 7.4 or higher.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Iowa Administrative Code 567, Chapter 65 (Animal Feeding Operations), Rule 567-65.111(11) and 65.111(12)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.legis.iowa.gov\/docs\/iac\/chapter\/567.65.pdf\" data-ssr-src rel=\"noopener\">Iowa Administrative Code 567, Chapter 65 (PDF, IAC 8\/6\/25)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-ia-567-65-mmp-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-ia-extension-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-IA\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"zone grid\" data-q=\"united states | iowa | iowa state university extension and outreach soil sampling advice | routine soil fertility sampling | isu extension and outreach crop 3108, take a good soil sample to help make good fertilization decisions (december 2016) | ph, p, k, mg | iowa | iowa state | isu extension | crop 3108 | pm 287 | usa | united states\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Iowa<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Iowa only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Routine soil fertility sampling<\/span><span class=\"ssr-sub\">Iowa State University Extension and Outreach soil sampling advice<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> Every 2 to 4 years for most crops, or once in a crop rotation, in the same crop each time<\/li><li><span class=\"k\">Season<\/span> Ideally after harvest and before fertilization. Not shortly after lime, fertilizer or manure. Avoid winter and frozen soil.<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">Grid: a suggested minimum of one sample per 2.5 acres. Beyond that, zone sampling is likely more effective. Otherwise one sample per uniform area.<\/td><td role=\"cell\" data-label=\"Method\">Soil map unit or management zone sampling, or grid sampling. Cores in a random zigzag pattern across each area; grid points cover an area at least 50 feet across.<\/td><td role=\"cell\" data-label=\"Depth\">P, K, Zn and organic matter: 0 to 6 inches in all tillage systems. pH: 0 to 6 inches with tillage, top 2 to 3 inches in no-till and in hay or pasture.<\/td><td role=\"cell\" data-label=\"Cores\">At least 10 to 12 cores per sample. 15 to 20 for a better average. At least 20 with recent banded fertilizer or manure.<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/www.iowadnr.gov\/media\/6194\/download\" data-ssr-src rel=\"noopener\">ISU Extension and Outreach CROP 3108 (PDF, copy hosted by Iowa DNR)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-ia-extension-soil-sampling\" data-c=\"Iowa\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for Iowa fields from Iowa State University Extension and Outreach. Not law. Iowa manure management rules point to it for procedure.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>Tell the laboratory when the pH sample came from 2 to 3 inches or the lime will not be incorporated.<\/dd><\/div><div><dt>Field identifiers<\/dt><dd>Each bag identifies the field and sample area with a unique number.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>ISU Extension and Outreach CROP 3108, Take a Good Soil Sample to Help Make Good Fertilization Decisions (December 2016)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.iowadnr.gov\/media\/6194\/download\" data-ssr-src rel=\"noopener\">ISU Extension and Outreach CROP 3108 (PDF, copy hosted by Iowa DNR)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-ia-extension-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-ks-kstate-extension-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-KS\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"representative\" data-q=\"united states | kansas | k-state research and extension, soil testing laboratory sampling advice | routine soil fertility sampling | k-state research and extension mf734, soil testing laboratory (june 2016) | ph, p, k, mg | kansas | k-state | kansas state | ksre | mf734 | usa | united states\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Kansas<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Kansas only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Routine soil fertility sampling<\/span><span class=\"ssr-sub\">K-State Research and Extension, Soil Testing Laboratory sampling advice<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> Row crops: immobile nutrients every 2 to 4 years, at a consistent time in the rotation. Permanent sod: every 2 to 4 years. Mobile nutrients: before responsive crops.<\/li><li><span class=\"k\">Season<\/span> Row crops and sod: fall or spring. Nitrate, chloride and sulfur profile: late fall or early spring.<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">Divide each field into uniform areas of the same soil texture, colour, slope, and fertilization and cropping history; sample each area.<\/td><td role=\"cell\" data-label=\"Depth\">Row crops 0 to 6 inches. Permanent sod 0 to 4 inches. Nitrogen, chloride or sulfur tests 0 to 24 inches.<\/td><td role=\"cell\" data-label=\"Cores\">10 to 15 cores or slices per area<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/bookstore.ksre.ksu.edu\/pubs\/MF734.pdf\" data-ssr-src rel=\"noopener\">K-State Research and Extension MF734, Soil Testing Laboratory (PDF)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-ks-kstate-extension-soil-sampling\" data-c=\"Kansas\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for Kansas fields from K-State Research and Extension. Not law.<\/dd><\/div><div><dt>Field identifiers<\/dt><dd>Label the container clearly and record the sample identification on the container and the information sheet.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>K-State Research and Extension MF734, Soil Testing Laboratory (June 2016)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/bookstore.ksre.ksu.edu\/pubs\/MF734.pdf\" data-ssr-src rel=\"noopener\">K-State Research and Extension MF734, Soil Testing Laboratory (PDF)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-ks-kstate-extension-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-ky-extension-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-KY\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"zone grid\" data-q=\"united states | kentucky | university of kentucky cooperative extension soil sampling advice | routine soil fertility sampling | university of kentucky cooperative extension agr-16, taking soil test samples (revised december 2003) | ph, p, k, mg | kentucky | uk extension | university of kentucky | agr-16 | usa | united states\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Kentucky<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Kentucky only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Routine soil fertility sampling<\/span><span class=\"ssr-sub\">University of Kentucky Cooperative Extension soil sampling advice<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> Most fields every three to four years. Every year for high-value crops (tobacco, commercial horticulture, alfalfa, red clover, corn silage) and for manured fields.<\/li><li><span class=\"k\">Season<\/span> Fall (September to December) or spring (February to April), at the same time of year each time<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">No more than 20 acres per sample, except where soils, past management and cropping history are quite uniform. Grid cells: 2.5 acres is the industry standard.<\/td><td role=\"cell\" data-label=\"Method\">Sample smaller areas by soil type, cropping history, erosion or past management; yield maps help. Grid sampling: treat each cell as a field.<\/td><td role=\"cell\" data-label=\"Depth\">Tilled areas: depth of tillage, usually 6 to 8 inches. Pastures, no-till and minimum-till: 3 to 4 inches.<\/td><td role=\"cell\" data-label=\"Cores\">At least 10 cores for small areas, up to 30 for larger fields. At least 10 across each grid cell.<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/publications.mgcafe.uky.edu\/sites\/publications.ca.uky.edu\/files\/AGR-16-Taking-Soil-Test-Samples--Remediated.pdf\" data-ssr-src rel=\"noopener\">UK Cooperative Extension AGR-16, Taking Soil Test Samples (PDF)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-ky-extension-soil-sampling\" data-c=\"Kentucky\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for Kentucky fields from University of Kentucky Cooperative Extension. Not law.<\/dd><\/div><div><dt>Field identifiers<\/dt><dd>Keep records of where each sample was taken.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>University of Kentucky Cooperative Extension AGR-16, Taking Soil Test Samples (revised December 2003)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/publications.mgcafe.uky.edu\/sites\/publications.ca.uky.edu\/files\/AGR-16-Taking-Soil-Test-Samples--Remediated.pdf\" data-ssr-src rel=\"noopener\">UK Cooperative Extension AGR-16, Taking Soil Test Samples (PDF)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-ky-extension-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-la-lsu-agcenter-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-LA\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"zone grid pattern\" data-q=\"united states | louisiana | lsu agcenter soil sampling, testing and test interpretation advice | routine soil fertility sampling | lsu agcenter p3934, soil sampling, testing and test interpretation for fertilizer recommendations (july 2024) | ph, p, k, mg | louisiana | lsu agcenter | lsu | p3934 | usa | united states\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Louisiana<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Louisiana only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Routine soil fertility sampling<\/span><span class=\"ssr-sub\">LSU AgCenter soil sampling, testing and test interpretation advice<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> At least once every two to three years, or once per complete crop rotation<\/li><li><span class=\"k\">Season<\/span> At the same time each year<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">Zone sampling: one composite per 10 acres. Grid sampling: one composite per 2.5 acres; start new fields at 1 acre.<\/td><td role=\"cell\" data-label=\"Method\">Zone or grid sampling, subsamples in a zigzag pattern within each zone or grid cell. In furrow-irrigated fields, sample the bed top 4 to 6 inches from the row.<\/td><td role=\"cell\" data-label=\"Depth\">0 to 6 inches<\/td><td role=\"cell\" data-label=\"Cores\">12 to 15 subsamples per composite: one to two per acre for zones, five to six per acre for grids. More where fertilizer was banded or manure spread.<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/www.lsuagcenter.com\/~\/media\/system\/4\/b\/a\/d\/4bad81ca0f97f86899ddacee691317fb\/p3934%20soil%20sampling%20recommendation_ag724pdf.pdf\" data-ssr-src rel=\"noopener\">LSU AgCenter P3934, Soil Sampling, Testing and Test Interpretation (PDF)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-la-lsu-agcenter-soil-sampling\" data-c=\"Louisiana\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for Louisiana fields from the LSU AgCenter. Not law.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>A certified soil laboratory. Louisiana fertilizer recommendations are based on the Mehlich-3 extraction of 0 to 6 inch samples. Use the same laboratory each year.<\/dd><\/div><div><dt>Field identifiers<\/dt><dd>Label each bag with farm name and location, sampling date and depth, previous crop and the crop to be grown.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>LSU AgCenter P3934, Soil Sampling, Testing and Test Interpretation for Fertilizer Recommendations (July 2024)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.lsuagcenter.com\/~\/media\/system\/4\/b\/a\/d\/4bad81ca0f97f86899ddacee691317fb\/p3934%20soil%20sampling%20recommendation_ag724pdf.pdf\" data-ssr-src rel=\"noopener\">LSU AgCenter P3934, Soil Sampling, Testing and Test Interpretation (PDF)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-la-lsu-agcenter-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-me-nutrient-management-act-soil-tests\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-ME\" data-p=\"fertility\" data-s=\"conditional\" data-m=\"none\" data-q=\"united states | maine | maine nutrient management act, nutrient management plans (nmp) | soil tests in a nutrient management plan | maine revised statutes title 7, chapter 747 (nutrient management act) | 7 m.r.s. section 4204, subsections 1-a(e) and 2 | ph, p, k, mg | maine | dacf | nutrient management act | nutrient management plan | nmp | usa | united states\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Maine<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Maine only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil tests in a nutrient management plan<\/span><span class=\"ssr-sub\">Maine Nutrient Management Act, nutrient management plans (NMP)<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> The statute sets no interval; it requires soil test results in the plan. Maine DACF guidance: soil and manure tests in the plan updated at least every 5 years, each field soil tested at least once every 5 years.<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Depth\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/legislature.maine.gov\/statutes\/7\/title7sec4204.html\" data-ssr-src rel=\"noopener\">7 M.R.S. section 4204, Nutrient management plan (Maine Legislature)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-me-nutrient-management-act-soil-tests\" data-c=\"Maine\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Farms that confine and feed 50 or more animal units at any one time, store or use more than 100 tons a year of manure not generated on the farm, are the subject of a verified complaint of improper manure handling, or store or use regulated residuals. Soil tests cover the land the plan designates for manure spreading or irrigation.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Maine Revised Statutes Title 7, Chapter 747 (Nutrient Management Act), 7 M.R.S. section 4204, subsections 1-A(E) and 2<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/legislature.maine.gov\/statutes\/7\/title7sec4204.html\" data-ssr-src rel=\"noopener\">7 M.R.S. section 4204, Nutrient management plan (Maine Legislature)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><li><a href=\"https:\/\/www.maine.gov\/DACF\/php\/nutrient_management\/documents\/Brochure-NutrientManagementPlans.pdf\" data-ssr-src rel=\"noopener\">Maine DACF, Nutrient Management Plans brochure (February 2016)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><li><a href=\"https:\/\/www.maine.gov\/DACF\/php\/nutrient_management\/documents\/BMP-ManureUtilizationGuidelines-rev.pdf\" data-ssr-src rel=\"noopener\">Maine DACF, Manure Utilization Guidelines (PDF)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-me-nutrient-management-act-soil-tests\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-me-umaine-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-ME\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"representative\" data-q=\"united states | maine | university of maine soil sampling instructions and cooperative extension advice | routine soil fertility sampling | maine soil testing service, sampling instructions (field and soil sample information form, 2018), and umaine extension bulletin 2286 | ph, p, k, mg | maine | umaine | university of maine | maine soil testing service | usa | united states\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Maine<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Maine only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Routine soil fertility sampling<\/span><span class=\"ssr-sub\">University of Maine soil sampling instructions and Cooperative Extension advice<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> At least once every three years; more often for problem areas or heavy nutrient use<\/li><li><span class=\"k\">Season<\/span> Early spring after the frost is out, or fall before the ground freezes<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">Up to 8 acres per sample where past treatment and soil type are uniform. Separate samples for low spots, trouble spots, different soils and differently treated areas.<\/td><td role=\"cell\" data-label=\"Method\">Uniform sampling areas; keep a permanent field sampling map.<\/td><td role=\"cell\" data-label=\"Depth\">Row crops or new seedings: plow depth, about 8 inches. Sod (hayfields, lawns): 3 to 4 inches. Tree crops: 12 inches.<\/td><td role=\"cell\" data-label=\"Cores\">About 15 spots per sample area<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/umaine.edu\/soiltestinglab\/wp-content\/uploads\/sites\/227\/2018\/07\/Soil-Info-Form-2018.pdf\" data-ssr-src rel=\"noopener\">Maine Soil Testing Service, Field and Soil Sample Information form, sampling instructions (PDF)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-me-umaine-soil-sampling\" data-c=\"Maine\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for Maine fields from the University of Maine. Not law.<\/dd><\/div><div><dt>Field identifiers<\/dt><dd>Label each container with the sample area and last name, matching the field sampling map and the form.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Maine Soil Testing Service, sampling instructions (Field and Soil Sample Information form, 2018), and UMaine Extension Bulletin 2286<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/umaine.edu\/soiltestinglab\/wp-content\/uploads\/sites\/227\/2018\/07\/Soil-Info-Form-2018.pdf\" data-ssr-src rel=\"noopener\">Maine Soil Testing Service, Field and Soil Sample Information form, sampling instructions (PDF)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><li><a href=\"https:\/\/extension.umaine.edu\/publications\/2286e\/\" data-ssr-src rel=\"noopener\">UMaine Extension Bulletin 2286, Know Your Soil: Testing Your Soil<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-me-umaine-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-md-comar-15-20-08-soil-analysis\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-MD\" data-p=\"fertility\" data-s=\"conditional\" data-m=\"representative\" data-q=\"united states | maryland | maryland nutrient management program (maryland department of agriculture) | soil analysis results in a nutrient management plan | comar 15.20.08, nutrient management regulations, and comar 15.20.07 | comar 15.20.08.05d; 15.20.07.05; 15.20.08.03b(2) | ph, p, k, mg | maryland | comar | mda | nutrient management plan | water quality improvement act | usa | united states\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Maryland<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Maryland only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil analysis results in a nutrient management plan<\/span><span class=\"ssr-sub\">Maryland Nutrient Management Program (Maryland Department of Agriculture)<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Result valid<\/span> Soil analysis results valid for 3 years, unless a documented exception applies<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">Standard soil sampling methods acceptable to the Department, per field or management unit. Documented variations: larger uniform fields or a crop rotation as one unit, combined strip-cropped fields, smaller units for specialized production.<\/td><td role=\"cell\" data-label=\"Depth\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/regs.maryland.gov\/us\/md\/exec\/comar\/15.20.08.05\" data-ssr-src rel=\"noopener\">COMAR 15.20.08.05, Required Plan Recommendations<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-md-comar-15-20-08-soil-analysis\" data-c=\"Maryland\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Agricultural operations with gross annual income of 2,500 dollars or more, or eight or more animal units, that use chemical fertilizer, animal manure or biosolids, for each field or management unit in the plan.<\/dd><\/div><div><dt>Outside the rule<\/dt><dd>The 3-year validity does not bind where documented: a new-technology management system needs less frequent analysis, no nutrient application is needed, or nutrients go on less than once every 3 years.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>Standard soil analysis methods acceptable to the Maryland Department of Agriculture.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>COMAR 15.20.08, Nutrient Management Regulations, and COMAR 15.20.07, COMAR 15.20.08.05D; 15.20.07.05; 15.20.08.03B(2)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/regs.maryland.gov\/us\/md\/exec\/comar\/15.20.08.05\" data-ssr-src rel=\"noopener\">COMAR 15.20.08.05, Required Plan Recommendations<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><li><a href=\"https:\/\/regs.maryland.gov\/us\/md\/exec\/comar\/15.20.08.03\" data-ssr-src rel=\"noopener\">COMAR 15.20.08.03, Definitions<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><li><a href=\"https:\/\/regs.maryland.gov\/us\/md\/exec\/comar\/15.20.07.05\" data-ssr-src rel=\"noopener\">COMAR 15.20.07.05, Plan Implementation Requirements<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-md-comar-15-20-08-soil-analysis\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-md-extension-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-MD\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"zone grid representative\" data-q=\"united states | maryland | university of maryland extension soil sampling advice | routine soil fertility sampling | university of maryland extension fs-1184, soil sampling for optimizing agricultural production in maryland (november 2021) | ph, p, k, mg | maryland | umd extension | university of maryland | fs-1184 | usa | united states\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Maryland<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Maryland only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Routine soil fertility sampling<\/span><span class=\"ssr-sub\">University of Maryland Extension soil sampling advice<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> At least once every three years, more often if possible<\/li><li><span class=\"k\">Season<\/span> Consider the same month each round. Fall after harvest and before nutrient applications is recommended.<\/li><li><span class=\"k\">Wait<\/span> At least six weeks after fertilizer or manure<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">Sample each management unit separately, cores at random across the unit. Grid or zone sampling where it fits the farm.<\/td><td role=\"cell\" data-label=\"Depth\">Fertility, cropland and pasture: 0 to 8 inches. Pasture and continuous no-till: a second 0 to 2 inch sample for pH only.<\/td><td role=\"cell\" data-label=\"Cores\">At least 15 to 20 cores for units of about 20 acres or less. At least one per acre for 20 to 30 acres. Less than one per acre is acceptable above 40 acres.<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/extension.umd.edu\/sites\/extension.umd.edu\/files\/publications\/Soil_Sampling_For_Optimizing_Ag_Production_FS-1184_ada.pdf\" data-ssr-src rel=\"noopener\">University of Maryland Extension FS-1184 (PDF)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-md-extension-soil-sampling\" data-c=\"Maryland\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for Maryland fields from University of Maryland Extension. Not law.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>A regional soil testing laboratory suitable for nutrient management planning in Maryland (UM-ANMP list).<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>University of Maryland Extension FS-1184, Soil Sampling for Optimizing Agricultural Production in Maryland (November 2021)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/extension.umd.edu\/sites\/extension.umd.edu\/files\/publications\/Soil_Sampling_For_Optimizing_Ag_Production_FS-1184_ada.pdf\" data-ssr-src rel=\"noopener\">University of Maryland Extension FS-1184 (PDF)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-md-extension-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-mn-7020-2225-feedlot-soil-phosphorus\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-MN\" data-p=\"p\" data-s=\"conditional\" data-m=\"none\" data-q=\"united states | minnesota | minnesota feedlot rules (mpca), land application of manure | soil phosphorus tests on land receiving feedlot manure | minnesota rules, part 7020.2225, land application of manure | part 7020.2225, subpart 3, item c | phosphorus | minnesota | mpca | feedlot rule | chapter 7020 | 7020.2225 | manure management plan | usa | united states\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Minnesota<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Minnesota only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil phosphorus tests on land receiving feedlot manure<\/span><span class=\"ssr-sub\">Minnesota feedlot rules (MPCA), land application of manure<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> At least once every four years<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Depth\">Upper six inches<\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/www.revisor.mn.gov\/rules\/7020.2225\/\" data-ssr-src rel=\"noopener\">Minnesota Rules, part 7020.2225 (Revisor of Statutes)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-mn-7020-2225-feedlot-soil-phosphorus\" data-c=\"Minnesota\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Land receiving manure or process wastewater from animal feedlots, or manure storage areas, capable of holding 300 or more animal units.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>Phosphorus by the Bray P1 or Olsen test. Fields over the set phosphorus levels need a manure management plan submitted with a permit application.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Minnesota Rules, part 7020.2225, Land application of manure, Part 7020.2225, subpart 3, item C<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.revisor.mn.gov\/rules\/7020.2225\/\" data-ssr-src rel=\"noopener\">Minnesota Rules, part 7020.2225 (Revisor of Statutes)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-mn-7020-2225-feedlot-soil-phosphorus\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-ms-extension-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-MS\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"representative pattern\" data-q=\"united states | mississippi | mississippi state university extension soil testing advice | routine soil fertility sampling | mississippi state university extension publication 3858, soil testing for the farmer (pod-07-26) | ph, p, k, mg | mississippi | msu extension | mississippi state | p3858 | usa | united states\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Mississippi<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Mississippi only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Routine soil fertility sampling<\/span><span class=\"ssr-sub\">Mississippi State University Extension soil testing advice<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> Each field once every 3 years or once per crop rotation<\/li><li><span class=\"k\">Season<\/span> Spring plantings: late October to January. Fall plantings: May to early August.<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">Divide fields into uniform areas using a soil map; cores at random in a zigzag pattern; row crops between the rows.<\/td><td role=\"cell\" data-label=\"Depth\">Cropland: plow depth or another constant depth, generally 6 inches. Pastures and lawns: 4 to 6 inches.<\/td><td role=\"cell\" data-label=\"Cores\">At least 15 to 20 cores. 30 or more if the soil was limed or broadcast-fertilized in the last 2 years.<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/extension.msstate.edu\/sites\/default\/files\/publications\/P3858_web.pdf\" data-ssr-src rel=\"noopener\">MSU Extension Publication 3858, Soil Testing for the Farmer (PDF)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-ms-extension-soil-sampling\" data-c=\"Mississippi\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for Mississippi fields from Mississippi State University Extension. Not law.<\/dd><\/div><div><dt>Field identifiers<\/dt><dd>Label each sample (at most five characters) and keep a map of the areas sampled.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Mississippi State University Extension Publication 3858, Soil Testing for the Farmer (POD-07-26)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/extension.msstate.edu\/sites\/default\/files\/publications\/P3858_web.pdf\" data-ssr-src rel=\"noopener\">MSU Extension Publication 3858, Soil Testing for the Farmer (PDF)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-ms-extension-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-mo-dnr-cafo-nutrient-management-standard\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-MO\" data-p=\"p\" data-s=\"official_guidance\" data-m=\"representative grid\" data-q=\"united states | missouri | missouri dnr cafo nutrient management technical standard | current soil test results for cafo manure application | missouri concentrated animal feeding operation nutrient management technical standard (missouri dnr, march 4, 2009) | section iii, a1(1) | phosphorus | missouri | missouri dnr | cafo | class i cafo | nutrient management technical standard | usa | united states\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Missouri<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Missouri only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Current soil test results for CAFO manure application<\/span><span class=\"ssr-sub\">Missouri DNR CAFO Nutrient Management Technical Standard<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Result valid<\/span> Re-sample before manure application when the soil test is more than five years old, or the phosphate surplus since the last test exceeds 500 lb\/acre<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">Approximately 20 acres or less per sample. Grid alternative: cells under 3 acres.<\/td><td role=\"cell\" data-label=\"Method\">Per MU Guides G9215 (pastures) and G9217 (row and hay crops). Georeferenced grid sampling is an alternative.<\/td><td role=\"cell\" data-label=\"Depth\">6 to 8 inches<\/td><td role=\"cell\" data-label=\"Cores\">At least 15 representative cores per sample, more on pastures or where phosphorus was banded. Grid: at least 10 cores within 15 feet of the grid point.<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/nmplanner.missouri.edu\/wp-content\/plugins\/nm-planner-functionality\/public\/assets\/pdfs\/Nutrient_Management_Tech_Standard-FINAL_3-4-09_Marked_NM-A.pdf\" data-ssr-src rel=\"noopener\">Missouri DNR CAFO Nutrient Management Technical Standard, March 4, 2009 (PDF, copy in the MU CAFO operator curriculum)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-mo-dnr-cafo-nutrient-management-standard\" data-c=\"Missouri\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Missouri DNR technical standard (March 4, 2009) for land application fields in the nutrient management plans of Class I CAFOs. Compliance is how a CAFO shows a precipitation-related discharge qualifies as agricultural stormwater. A department standard, not the regulation text.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>A laboratory accredited by the Missouri Soil Testing Association, using University of Missouri Soil Testing Laboratory procedures.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Missouri Concentrated Animal Feeding Operation Nutrient Management Technical Standard (Missouri DNR, March 4, 2009), Section III, A1(1)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/nmplanner.missouri.edu\/wp-content\/plugins\/nm-planner-functionality\/public\/assets\/pdfs\/Nutrient_Management_Tech_Standard-FINAL_3-4-09_Marked_NM-A.pdf\" data-ssr-src rel=\"noopener\">Missouri DNR CAFO Nutrient Management Technical Standard, March 4, 2009 (PDF, copy in the MU CAFO operator curriculum)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-mo-dnr-cafo-nutrient-management-standard\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-mo-extension-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-MO\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"representative pattern grid\" data-q=\"united states | missouri | university of missouri extension soil sampling advice | routine soil fertility sampling, hayfields and row crops | mu extension guide g9217, soil sampling hayfields and row crops | ph, p, k, mg | missouri | mu extension | university of missouri | g9217 | usa | united states\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Missouri<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Missouri only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Routine soil fertility sampling, hayfields and row crops<\/span><span class=\"ssr-sub\">University of Missouri Extension soil sampling advice<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> Every three to five years, at the same time of year as the last sample<\/li><li><span class=\"k\">Season<\/span> When the field is idle: fall and winter after harvest for forages and spring crops; summer for winter wheat and fall-seeded crops<\/li><li><span class=\"k\">Wait<\/span> At least three months after phosphorus fertilizer, lime or manure<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">Sampling areas typically no more than 20 acres. Grid sampling: typically one sample per 2.5 acres or less.<\/td><td role=\"cell\" data-label=\"Method\">Divide fields into areas expected to be similar or managed alike; zigzag across the whole area. Grid sampling for variable rate, high-value fields or unknown history.<\/td><td role=\"cell\" data-label=\"Depth\">6 to 7 inches for most objectives. Long-term no-till: a separate 0 to 2 inch sample for surface pH.<\/td><td role=\"cell\" data-label=\"Cores\">10 to 20 cores. 15 to 20 with manure, banded fertilizer or other variation; 10 to 15 on uniform, broadcast-fertilized fields. 30 cores in a set pattern where injection bands are known.<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/nmplanner.missouri.edu\/wp-content\/plugins\/nm-planner-functionality\/public\/assets\/pdfs\/g09217_Marked_NM-B.pdf\" data-ssr-src rel=\"noopener\">MU Extension G9217, Soil Sampling Hayfields and Row Crops (PDF, CAFO operator curriculum copy)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-mo-extension-soil-sampling\" data-c=\"Missouri\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for Missouri hayfields and row crops from University of Missouri Extension. Not law.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>A laboratory accredited by the Missouri Soil Testing Association (MSTA).<\/dd><\/div><div><dt>Field identifiers<\/dt><dd>Label each sample with field and subfield names.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>MU Extension Guide G9217, Soil Sampling Hayfields and Row Crops<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/nmplanner.missouri.edu\/wp-content\/plugins\/nm-planner-functionality\/public\/assets\/pdfs\/g09217_Marked_NM-B.pdf\" data-ssr-src rel=\"noopener\">MU Extension G9217, Soil Sampling Hayfields and Row Crops (PDF, CAFO operator curriculum copy)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-mo-extension-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-mt-extension-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-MT\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"grid zone representative\" data-q=\"united states | montana | montana state university extension soil sampling advice | routine soil fertility sampling | msu extension, the soil scoop: soil testing, getting a good sample (september 2025), and montguide mt200803ag, soil sampling strategies (revised september 2017) | ph, p, k, mg | montana | msu extension | montana state | soil scoop | montguide | usa | united states\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Montana<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Montana only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Routine soil fertility sampling<\/span><span class=\"ssr-sub\">Montana State University Extension soil sampling advice<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Season<\/span> Late fall to mid-spring for nitrogen. If sampled in fall above about 60 lb N\/acre on soils under two feet deep, sample again in spring.<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">Grid for immobile nutrients, manure or high fertilizer history, or merged fields; zones for nitrogen, organic matter and pH, unknown history or yield linked to landscape. Uniform fields sampled at random. Georeference sampling points and return to them.<\/td><td role=\"cell\" data-label=\"Depth\">Annual crops: 6 inches for most tests, at least 2 feet for nitrogen. Pasture and forage: 12 inches.<\/td><td role=\"cell\" data-label=\"Cores\">Ten subsamples per composite is a reasonable average; 12 per field or zone for plus or minus 25 percent accuracy at 90 percent confidence.<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/landresources.montana.edu\/soilfertility\/documents\/PDF\/sscoop\/SoilTestGetGoodSampleSS.pdf\" data-ssr-src rel=\"noopener\">MSU Extension, The Soil Scoop: Soil Testing, Getting a Good Sample (PDF)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-mt-extension-soil-sampling\" data-c=\"Montana\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for Montana fields from Montana State University Extension. Not law.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>Olsen phosphorus test, the basis of Montana P guidelines. Ask whether the lab is enrolled in a proficiency testing program; stay with a reliable lab in later years.<\/dd><\/div><div><dt>Field identifiers<\/dt><dd>Georeference sampling points with GPS; keep records of sampling locations and timing.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>MSU Extension, The Soil Scoop: Soil Testing, Getting a Good Sample (September 2025), and MontGuide MT200803AG, Soil Sampling Strategies (revised September 2017)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/landresources.montana.edu\/soilfertility\/documents\/PDF\/sscoop\/SoilTestGetGoodSampleSS.pdf\" data-ssr-src rel=\"noopener\">MSU Extension, The Soil Scoop: Soil Testing, Getting a Good Sample (PDF)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><li><a href=\"https:\/\/extension-store.montana.edu\/assets\/publications\/montguidepdfs\/mt200803ag-soil-sampling-strategies-rev09.17.pdf\" data-ssr-src rel=\"noopener\">MSU Extension MontGuide MT200803AG, Soil Sampling Strategies (PDF)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-mt-extension-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-ne-title-130-livestock-nmp\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-NE\" data-p=\"p\" data-s=\"conditional\" data-m=\"representative\" data-q=\"united states | nebraska | livestock waste control regulations, nutrient management plan | soil phosphorus and nitrogen tests on manure application fields | nebraska administrative code, title 130, livestock waste control regulations | chapter 14, sections 001.10e and 001.11 | phosphorus | nebraska | title 130 | livestock waste control regulations | dwee | ndee | cafo | nutrient management plan\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Nebraska<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Nebraska only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil phosphorus and nitrogen tests on manure application fields<\/span><span class=\"ssr-sub\">Livestock Waste Control Regulations, nutrient management plan<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> Phosphorus: before the first manure application, then at least once every 5 years while the field is used<\/li><li><span class=\"k\">Repeat<\/span> Nitrogen: before the first manure application, then at least annually while the field is used<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">Soil sampling procedures and depths set out in the nutrient management plan. University of Nebraska guidelines may be used; the Department may approve alternatives.<\/td><td role=\"cell\" data-label=\"Depth\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/dwee.nebraska.gov\/sites\/default\/files\/Regulations\/Title_130.pdf\" data-ssr-src rel=\"noopener\">Title 130, Livestock Waste Control Regulations (effective 23 September 2026)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-ne-title-130-livestock-nmp\" data-c=\"Nebraska\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Livestock operations applying for a permit under Title 130, for each field used to land apply manure, litter or process wastewater.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>Soil analytic methods set out in the nutrient management plan. University of Nebraska guidelines may be used; the Department may approve alternatives.<\/dd><\/div><div><dt>In force from<\/dt><dd>23 September 2026<\/dd><\/div><div><dt>Legal text<\/dt><dd>Nebraska Administrative Code, Title 130, Livestock Waste Control Regulations, Chapter 14, sections 001.10E and 001.11<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/dwee.nebraska.gov\/sites\/default\/files\/Regulations\/Title_130.pdf\" data-ssr-src rel=\"noopener\">Title 130, Livestock Waste Control Regulations (effective 23 September 2026)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-ne-title-130-livestock-nmp\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-ne-extension-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-NE\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"representative zone grid\" data-q=\"united states | nebraska | nebraska extension sampling advice | routine soil fertility sampling | nebraska extension, guidelines for soil sampling (g1740) | ph, p, k, mg | nebraska | unl | nebraska extension | g1740\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Nebraska<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Nebraska only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Routine soil fertility sampling<\/span><span class=\"ssr-sub\">Nebraska Extension sampling advice<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Season<\/span> Late fall or early winter, except for nitrate testing on coarse-textured soils. Where nitrate may have leached over winter or spring, spring sampling before planting is the preferred option.<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">Fields or areas within fields no larger than 40 acres (16.19 ha)<\/td><td role=\"cell\" data-label=\"Method\">Random cores within representative areas for a uniform rate. Management zones or a grid with known sample locations for variable rate.<\/td><td role=\"cell\" data-label=\"Depth\">0 to 8 inches (0 to 20.32 cm) for pH, lime need, organic matter, P, K, S and Zn. Nitrate: subsurface cores to 3 feet (91.44 cm), 2 feet (60.96 cm) at minimum.<\/td><td role=\"cell\" data-label=\"Cores\">10 to 15 random surface cores per 40-acre area. Six to eight subsoil cores for nitrate.<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/extensionpubs.unl.edu\/publication\/g1740\/na\/html\/view\" data-ssr-src rel=\"noopener\">Nebraska Extension, G1740 Guidelines for Soil Sampling<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-ne-extension-soil-sampling\" data-c=\"Nebraska\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for Nebraska fields from the University of Nebraska-Lincoln Extension. Not law.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Nebraska Extension, Guidelines for Soil Sampling (G1740)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/extensionpubs.unl.edu\/publication\/g1740\/na\/html\/view\" data-ssr-src rel=\"noopener\">Nebraska Extension, G1740 Guidelines for Soil Sampling<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-ne-extension-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-nv-extension-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-NV\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"representative\" data-q=\"united states | nevada | university of nevada, reno extension sampling advice | routine soil fertility sampling | university of nevada, reno extension, know the status of your soils before you plant (fs-19-17) | ph, p, k, mg | nevada | unr | university of nevada reno extension | fs-19-17\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Nevada<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Nevada only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Routine soil fertility sampling<\/span><span class=\"ssr-sub\">University of Nevada, Reno Extension sampling advice<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> Every 2 to 3 years for most crops. Before each crop for high-value cash crops. Sandy soils every 2 to 3 years, clay soils every 3 to 4 years. Every year where earlier tests showed levels too high or too low.<\/li><li><span class=\"k\">Season<\/span> After harvest and before planting the next crop, around the same month each year<\/li><li><span class=\"k\">Wait<\/span> Avoid sampling soon after fertilizer or manure applications<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">Divide the field into similar units by soil, slope, drainage, erosion and history. Random cores in a zigzag pattern in each unit; a simple random pattern on uniform fields.<\/td><td role=\"cell\" data-label=\"Depth\">15 cm (6 inches) for shallow-rooted crops, 30 cm (12 inches) for deep-rooted crops. In some cases on light-textured soils where nutrients leach, separate deeper samples from 15 to 60 cm (6 to 24 inches) for available nitrogen and sulfur.<\/td><td role=\"cell\" data-label=\"Cores\">Two or three cores per acre in each unit. At least 15 to 20 cores on uniform fields.<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/extension.unr.edu\/publication.aspx?PubID=2849\" data-ssr-src rel=\"noopener\">University of Nevada, Reno Extension, FS-19-17<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-nv-extension-soil-sampling\" data-c=\"Nevada\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for Nevada growers from the University of Nevada, Reno Extension. Not law.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>University of Nevada, Reno Extension, Know the Status of Your Soils Before You Plant (FS-19-17)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/extension.unr.edu\/publication.aspx?PubID=2849\" data-ssr-src rel=\"noopener\">University of Nevada, Reno Extension, FS-19-17<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-nv-extension-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-nh-extension-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-NH\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"representative\" data-q=\"united states | new hampshire | unh extension soil testing service instructions | soil test for corn, forage, pasture and hay | unh cooperative extension, soil testing form: corn, forage, pasture and hay, sampling instructions | ph, p, k, mg | new hampshire | unh | unh extension | unh cooperative extension\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">New Hampshire<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">New Hampshire only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil test for corn, forage, pasture and hay<\/span><span class=\"ssr-sub\">UNH Extension soil testing service instructions<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">A sample representative of the area to be advised on. Keep out areas with an obvious difference in soil type, drainage or plant growth.<\/td><td role=\"cell\" data-label=\"Depth\">6 to 8 inches (15.24 to 20.32 cm) for row crops and alfalfa. 4 to 6 inches (10.16 to 15.24 cm) for deep grass and pastures. 2 to 4 inches (5.08 to 10.16 cm) for no-till fields.<\/td><td role=\"cell\" data-label=\"Cores\">15 to 20 locations per field, combined<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/extension.unh.edu\/resources\/files\/Resource002482_Rep3652.pdf\" data-ssr-src rel=\"noopener\">UNH Cooperative Extension, Soil Testing Form: Corn, Forage, Pasture and Hay (PDF)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-nh-extension-soil-sampling\" data-c=\"New Hampshire\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Instructions for New Hampshire farm samples sent to the University of New Hampshire Extension lab. Not law.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>UNH Cooperative Extension, Soil Testing Form: Corn, Forage, Pasture and Hay, sampling instructions<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/extension.unh.edu\/resources\/files\/Resource002482_Rep3652.pdf\" data-ssr-src rel=\"noopener\">UNH Cooperative Extension, Soil Testing Form: Corn, Forage, Pasture and Hay (PDF)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-nh-extension-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-nj-extension-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-NJ\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"representative\" data-q=\"united states | new jersey | rutgers soil testing laboratory sampling procedure | soil test for field, vegetable, fruit and nursery crops | rutgers cooperative extension, commercial farm and nursery soil testing, sampling procedure | ph, p, k, mg | new jersey | rutgers | njaes | rutgers cooperative extension | rutgers soil testing laboratory\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">New Jersey<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">New Jersey only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil test for field, vegetable, fruit and nursery crops<\/span><span class=\"ssr-sub\">Rutgers Soil Testing Laboratory sampling procedure<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Season<\/span> Easiest when soil moisture is suitable for plowing<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">Vertical slices or cores mixed into one representative sample per sampling area. Separate samples for separate areas.<\/td><td role=\"cell\" data-label=\"Depth\">Surface to 6 to 8 inches (15.24 to 20.32 cm)<\/td><td role=\"cell\" data-label=\"Cores\">11 to 15 locations within the sampling area<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/extension.rutgers.edu\/soil-testing-lab\/farm-nursery\" data-ssr-src rel=\"noopener\">Rutgers Cooperative Extension, Commercial Farm and Nursery Soil Testing<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-nj-extension-soil-sampling\" data-c=\"New Jersey\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Instructions for New Jersey growers sending samples to the Rutgers Soil Testing Laboratory. Not law.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Rutgers Cooperative Extension, Commercial Farm and Nursery Soil Testing, Sampling Procedure<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/extension.rutgers.edu\/soil-testing-lab\/farm-nursery\" data-ssr-src rel=\"noopener\">Rutgers Cooperative Extension, Commercial Farm and Nursery Soil Testing<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-nj-extension-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-nm-20-6-6-dairy-land-application\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-NM\" data-p=\"n\" data-s=\"conditional\" data-m=\"representative\" data-q=\"united states | new mexico | ground water protection, supplemental permitting requirements for dairy facilities (dairy rule) | annual soil sampling of dairy land application fields | 20.6.6 nmac, ground water protection: supplemental permitting requirements for dairy facilities | 20.6.6.25 nmac, subsections k and l | nitrogen | new mexico | dairy rule | 20.6.6 nmac | nmed | water quality control commission | discharge permit\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">New Mexico<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">New Mexico only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Annual soil sampling of dairy land application fields<\/span><span class=\"ssr-sub\">Ground water protection, supplemental permitting requirements for dairy facilities (Dairy Rule)<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> Annually on every field that has received wastewater or stormwater, cropped or fallow<\/li><li><span class=\"k\">Season<\/span> Before the first wastewater application on a new field; an initial event on every field in the first year of each permit term<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">One composite per field from cores taken at random throughout the field; a separate composite for each soil texture.<\/td><td role=\"cell\" data-label=\"Depth\">Three composites per field: 0 to 12 inches (0 to 30.48 cm), 12 to 24 inches (30.48 to 60.96 cm) and 24 to 36 inches (60.96 to 91.44 cm)<\/td><td role=\"cell\" data-label=\"Cores\">15 cores per composite<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/www.srca.nm.gov\/parts\/title20\/20.006.0006.html\" data-ssr-src rel=\"noopener\">20.6.6 NMAC (New Mexico Administrative Code)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-nm-20-6-6-dairy-land-application\" data-c=\"New Mexico\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Dairy facilities with a discharge permit and a land application area: every field that has received or is receiving wastewater or stormwater, and every field in the first year of each permit term.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>pH, EC, sodium, calcium and magnesium on a saturated paste extract; phosphorus by Olsen sodium bicarbonate; nitrate by 2 molar KCl extract; methods under 20.6.6.24 NMAC.<\/dd><\/div><div><dt>Field identifiers<\/dt><dd>A map showing the fields and the sampling locations within each field, submitted with the results.<\/dd><\/div><div><dt>In force from<\/dt><dd>16 June 2015<\/dd><\/div><div><dt>Legal text<\/dt><dd>20.6.6 NMAC, Ground Water Protection: Supplemental Permitting Requirements for Dairy Facilities, 20.6.6.25 NMAC, Subsections K and L<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.srca.nm.gov\/parts\/title20\/20.006.0006.html\" data-ssr-src rel=\"noopener\">20.6.6 NMAC (New Mexico Administrative Code)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-nm-20-6-6-dairy-land-application\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-nm-extension-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-NM\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"zone\" data-q=\"united states | new mexico | nmsu cooperative extension sampling advice | routine soil fertility sampling | new mexico state university, guide a-146, recommended analyses for new mexico soils | ph, p, k, mg | new mexico | nmsu | nmsu extension | guide a-146\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">New Mexico<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">New Mexico only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Routine soil fertility sampling<\/span><span class=\"ssr-sub\">NMSU Cooperative Extension sampling advice<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> Every year before the crop season; at least every other year<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">Divide crop fields larger than 25 acres (10.12 ha) into separate sampling sections<\/td><td role=\"cell\" data-label=\"Method\">One sample per management zone: an area treated the same for water, fertilizer and yield potential. Divide by yield history, slope, weed pressure and soil type.<\/td><td role=\"cell\" data-label=\"Depth\">Untilled ground (direct-seeded fields, orchards, vineyards): 6 to 8 inches (15.24 to 20.32 cm). Tilled fields: 12 inches (30.48 cm).<\/td><td role=\"cell\" data-label=\"Cores\">10 to 15 subsamples from the same depth per sample<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/pubs.nmsu.edu\/_a\/A146\/\" data-ssr-src rel=\"noopener\">NMSU Guide A-146, Recommended Analyses for New Mexico Soils<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-nm-extension-soil-sampling\" data-c=\"New Mexico\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for New Mexico farms from New Mexico State University Cooperative Extension. Not law.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>Labs in the North American Proficiency Testing Program are suggested. For New Mexico soils, pH on the saturated paste.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>New Mexico State University, Guide A-146, Recommended Analyses for New Mexico Soils<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/pubs.nmsu.edu\/_a\/A146\/\" data-ssr-src rel=\"noopener\">NMSU Guide A-146, Recommended Analyses for New Mexico Soils<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-nm-extension-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-ny-extension-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-NY\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"representative grid zone\" data-q=\"united states | new york | cornell nutrient management spear program, agronomy fact sheet series | soil sampling for field crops | cornell university, agronomy fact sheet #1, soil sampling for field crops (2020) | ph, p, k, mg | new york | cornell | cornell cals | nutrient management spear program | nmsp | agronomy fact sheet 1\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">New York<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">New York only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil sampling for field crops<\/span><span class=\"ssr-sub\">Cornell Nutrient Management Spear Program, Agronomy Fact Sheet Series<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> At least once every 2 to 3 years<\/li><li><span class=\"k\">Season<\/span> Best in fall after harvest of the main crop; spring or summer also possible. Sample around the same month each year.<\/li><li><span class=\"k\">Wait<\/span> 5 to 6 weeks after fertilizer or manure, or sod termination, for pH, general fertility and the soil nitrogen test<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">Generally 15 acres (6.07 ha) or less per sample. Grid cells often 0.5 to about 6 acres.<\/td><td role=\"cell\" data-label=\"Method\">Zigzag across the field when one sample represents the whole field. Grid sampling for larger fields and zone management; grid results can define management zones that are sampled from then on.<\/td><td role=\"cell\" data-label=\"Depth\">Conventional tillage 0 to 8 inches (0 to 20.32 cm). Pasture 0 to 6 inches (0 to 15.24 cm). No-till or minimum till: 0 to 1 inch (0 to 2.54 cm) for pH and 0 to 6 inches (0 to 15.24 cm) for nutrients.<\/td><td role=\"cell\" data-label=\"Cores\">About two cores per acre (field acres times 2), at least 10 to 15 on smaller fields. Grid cells and zones: an average of two cores per acre.<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/nmsp.cals.cornell.edu\/publications\/factsheets\/factsheet1.pdf\" data-ssr-src rel=\"noopener\">Cornell Agronomy Fact Sheet #1, Soil Sampling for Field Crops (PDF)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-ny-extension-soil-sampling\" data-c=\"New York\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for New York field crops from Cornell University College of Agriculture and Life Sciences. Not law.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Cornell University, Agronomy Fact Sheet #1, Soil Sampling for Field Crops (2020)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/nmsp.cals.cornell.edu\/publications\/factsheets\/factsheet1.pdf\" data-ssr-src rel=\"noopener\">Cornell Agronomy Fact Sheet #1, Soil Sampling for Field Crops (PDF)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-ny-extension-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-nc-extension-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-NC\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"representative\" data-q=\"united states | north carolina | nc state extension soilfacts | routine soil fertility sampling | nc state extension, careful soil sampling: the key to reliable soil test information (ag-439-30, 2022) | ph, p, k, mg | north carolina | nc state extension | ncsu | soilfacts | ag-439-30 | ncda\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">North Carolina<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">North Carolina only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Routine soil fertility sampling<\/span><span class=\"ssr-sub\">NC State Extension SoilFacts<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> Coastal plain: every 2 to 3 years. Piedmont and mountains: once every 4 years is usually enough.<\/li><li><span class=\"k\">Season<\/span> 3 to 6 months before planting, at the same time every year if possible. Perennial or sod crops: 3 to 4 months before establishing the crop or applying lime or fertilizer.<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">No more than about 20 acres (8.09 ha) per sample, even where the soil looks uniform<\/td><td role=\"cell\" data-label=\"Method\">Cores at random locations through one field or area of one soil type or condition. A separate sample for each area that differs in slope, color, drainage or texture and can be fertilized separately.<\/td><td role=\"cell\" data-label=\"Depth\">Field crops: plow depth, usually about 8 inches (20.32 cm). Perennial crops being maintained (fescue, alfalfa, turf): 4 inches (10.16 cm).<\/td><td role=\"cell\" data-label=\"Cores\">About 15 to 20 cores per sample<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/content.ces.ncsu.edu\/careful-soil-sampling-the-key-to-reliable-soil-test-information\" data-ssr-src rel=\"noopener\">NC State Extension, AG-439-30, Careful Soil Sampling<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-nc-extension-soil-sampling\" data-c=\"North Carolina\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for North Carolina farms from NC State Extension, written with the state soil testing laboratory. Not law.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>NC State Extension, Careful Soil Sampling: The Key to Reliable Soil Test Information (AG-439-30, 2022)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/content.ces.ncsu.edu\/careful-soil-sampling-the-key-to-reliable-soil-test-information\" data-ssr-src rel=\"noopener\">NC State Extension, AG-439-30, Careful Soil Sampling<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-nc-extension-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-nd-extension-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-ND\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"zone grid\" data-q=\"united states | north dakota | ndsu extension sampling advice | soil sampling for fertilizer recommendations, including nitrate | ndsu extension, soil sampling as a basis for fertilizer application (sf990, revised september 2023) | ph, p, k, mg | north dakota | ndsu | ndsu extension | sf990\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">North Dakota<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">North Dakota only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil sampling for fertilizer recommendations, including nitrate<\/span><span class=\"ssr-sub\">NDSU Extension sampling advice<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Season<\/span> Nitrate samples may be taken right after any grain harvest. Sample for K at the same time each year.<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">Where grid sampling is used: one sample per acre (0.40 ha). Coarser grids, such as one sample per 2.5 acres, are inadequate in North Dakota. The guide sets no area for zone samples.<\/td><td role=\"cell\" data-label=\"Method\">Zone sampling, with zones built from at least two tools such as crop canopy imagery, soil EC sensors, multiyear yield maps and elevation. A systematic unaligned grid only in areas with large manure applications or fields with large P and K buildup applications.<\/td><td role=\"cell\" data-label=\"Depth\">0 to 6 inches (0 to 15.24 cm) for pH, P, K, Zn, Cu, Mn. 0 to 2 feet (0 to 60.96 cm) for nitrate-N and chloride, best split at 6 inches. No-till: 0 to 2 inches (0 to 5.08 cm) separately from 2 to 6 inches.<\/td><td role=\"cell\" data-label=\"Cores\">Eight to 10 cores at random within each zone<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/www.ndsu.edu\/agriculture\/ag-hub\/publications\/soil-sampling-basis-fertilizer-application\" data-ssr-src rel=\"noopener\">NDSU Extension, SF990 Soil Sampling as a Basis for Fertilizer Application<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-nd-extension-soil-sampling\" data-c=\"North Dakota\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for North Dakota fields from North Dakota State University Extension. Not law.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>NDSU Extension, Soil Sampling as a Basis for Fertilizer Application (SF990, revised September 2023)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.ndsu.edu\/agriculture\/ag-hub\/publications\/soil-sampling-basis-fertilizer-application\" data-ssr-src rel=\"noopener\">NDSU Extension, SF990 Soil Sampling as a Basis for Fertilizer Application<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-nd-extension-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-oh-extension-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-OH\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"grid zone\" data-q=\"united states | ohio | ohio state university extension, ohioline fact sheets | soil sampling to develop nutrient recommendations | ohio state university extension, soil sampling to develop nutrient recommendations (agf-513, 2012) | ph, p, k, mg | ohio | ohio state | osu extension | ohioline | cfaes | agf-513\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Ohio<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Ohio only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil sampling to develop nutrient recommendations<\/span><span class=\"ssr-sub\">Ohio State University Extension, Ohioline fact sheets<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Area per sample\">No sample zone over 25 acres (10.12 ha). Grid option: one point per 2.5 acres (360 by 360 feet).<\/td><td role=\"cell\" data-label=\"Method\">Systematic grid sampling, or management zones from yield maps, management history and other data; zigzag through each zone. Georeferenced points help track trends.<\/td><td role=\"cell\" data-label=\"Depth\">8 inches (20.32 cm), the depth most soil tests are calibrated to. No-till: a 0 to 2 inch (0 to 5.08 cm) sample for pH may help.<\/td><td role=\"cell\" data-label=\"Cores\">At least 15 cores per composite from 25 acres or less; 20 to 25 after banded fertilizer. Zones: 10 to 15 cores. Grid points: 8 cores within a 10-foot circle.<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/ohioline.osu.edu\/factsheet\/agf-513\" data-ssr-src rel=\"noopener\">Ohioline AGF-513, Soil Sampling to Develop Nutrient Recommendations<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-oh-extension-soil-sampling\" data-c=\"Ohio\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for Ohio fields from Ohio State University Extension. Not law.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>Ask whether the lab follows Recommended Chemical Soil Test Procedures for the North Central Region.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Ohio State University Extension, Soil Sampling to Develop Nutrient Recommendations (AGF-513, 2012)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/ohioline.osu.edu\/factsheet\/agf-513\" data-ssr-src rel=\"noopener\">Ohioline AGF-513, Soil Sampling to Develop Nutrient Recommendations<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-oh-extension-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-ok-poultry-feeding-operations-soil-test\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-OK\" data-p=\"fertility\" data-s=\"conditional\" data-m=\"none\" data-q=\"united states | oklahoma | oklahoma registered poultry feeding operations act, nutrient management plan | soil test on poultry waste land application areas | oklahoma registered poultry feeding operations act, title 2 o.s. section 10-9.7 | section 10-9.7, subsections f, g and h | ph, p, k, mg | oklahoma | odaff | poultry feeding operations act | poultry litter | nutrient management plan | nutrient-limited watershed\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Oklahoma<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Oklahoma only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil test on poultry waste land application areas<\/span><span class=\"ssr-sub\">Oklahoma Registered Poultry Feeding Operations Act, nutrient management plan<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> Operations in a non-nutrient-limited watershed and non-nutrient-vulnerable groundwaters: at least once every 3 years on each land application area<\/li><li><span class=\"k\">Repeat<\/span> Operations in a nutrient-limited watershed and nutrient-vulnerable groundwater: every year on each land application area, before the first application of the calendar year<\/li><li><span class=\"k\">Result valid<\/span> Analysis data must be dated before the land application and kept for at least 6 years<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Depth\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/ag.ok.gov\/wp-content\/uploads\/2023\/04\/Title-2-PFO-August-2024.pdf\" data-ssr-src rel=\"noopener\">Oklahoma Registered Poultry Feeding Operations Act (Title 2 O.S.), text as compiled by the Oklahoma Department of Agriculture, Food, and Forestry, reference date 29 August 2024 (PDF)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-ok-poultry-feeding-operations-soil-test\" data-c=\"Oklahoma\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Poultry feeding operations under the Act, meaning a property or facility where poultry are confined and fed 45 days or more in any 12 months, crops or other vegetation are not sustained over any part of it in the normal growing season, and over 10 tons of poultry waste are produced a year. Applies to each land application area.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>Soil pH and plant-available nutrients, at a minimum nitrogen, phosphorus and potassium.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Oklahoma Registered Poultry Feeding Operations Act, Title 2 O.S. Section 10-9.7, Section 10-9.7, subsections F, G and H<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/ag.ok.gov\/wp-content\/uploads\/2023\/04\/Title-2-PFO-August-2024.pdf\" data-ssr-src rel=\"noopener\">Oklahoma Registered Poultry Feeding Operations Act (Title 2 O.S.), text as compiled by the Oklahoma Department of Agriculture, Food, and Forestry, reference date 29 August 2024 (PDF)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-ok-poultry-feeding-operations-soil-test\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-or-extension-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-OR\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"representative\" data-q=\"united states | oregon | oregon state university extension sampling advice | routine soil fertility sampling for farms and gardens | oregon state university extension, a guide to collecting soil samples for farms and gardens (ec 628, revised november 2022) | ph, p, k, mg | oregon | oregon state | osu extension | ec 628 | ec628\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Oregon<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Oregon only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Routine soil fertility sampling for farms and gardens<\/span><span class=\"ssr-sub\">Oregon State University Extension sampling advice<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> Every 2 to 3 years for annual crops, pastures and legumes. Every 3 to 5 years for Christmas trees, fruit and nut trees, berries and grapes.<\/li><li><span class=\"k\">Season<\/span> Same time of year each time. Western Oregon high-rainfall soils: late summer or fall. Perennial crops: before planting.<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">A separate sample for each area that differs in soil type, topography, crop or management history. Avoid unusual spots.<\/td><td role=\"cell\" data-label=\"Depth\">Surface to about 6 inches (15.24 cm), or to the depth of tillage. Keep the same depth for all future samples.<\/td><td role=\"cell\" data-label=\"Cores\">15 to 20 subsamples per sampling area<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/extension.oregonstate.edu\/sites\/extd8\/files\/catalog\/auto\/EC628.pdf\" data-ssr-src rel=\"noopener\">Oregon State University Extension, EC 628 (PDF)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-or-extension-soil-sampling\" data-c=\"Oregon\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for Oregon farms and gardens from Oregon State University Extension. Not law.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Oregon State University Extension, A Guide to Collecting Soil Samples for Farms and Gardens (EC 628, revised November 2022)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/extension.oregonstate.edu\/sites\/extd8\/files\/catalog\/auto\/EC628.pdf\" data-ssr-src rel=\"noopener\">Oregon State University Extension, EC 628 (PDF)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-or-extension-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-pa-25-pa-code-83-292-nutrient-management\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-PA\" data-p=\"fertility\" data-s=\"conditional\" data-m=\"zone\" data-q=\"united states | pennsylvania | nutrient management act (act 38), nutrient management plans | soil test for p, k and ph in a nutrient management plan | 25 pa. code chapter 83, subchapter d, nutrient management | section 83.292(e) | ph, p, k, mg | pennsylvania | act 38 | nutrient management act | 25 pa. code chapter 83 | chapter 83 | cao | concentrated animal operation | state conservation commission\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Pennsylvania<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Pennsylvania only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil test for P, K and pH in a nutrient management plan<\/span><span class=\"ssr-sub\">Nutrient Management Act (Act 38), nutrient management plans<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> Every crop management unit at least every 3 years from the date of the last test, once the plan is approved<\/li><li><span class=\"k\">Result valid<\/span> For the initial plan, tests taken within the previous 3 years are acceptable<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">One soil test per crop management unit: a field, part of a field or group of fields with the same rotation and manure history and similar production capability, managed as one unit.<\/td><td role=\"cell\" data-label=\"Depth\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/www.pacodeandbulletin.gov\/Display\/pacode?file=\/secure\/pacode\/data\/025\/chapter83\/s83.292.html\" data-ssr-src rel=\"noopener\">25 Pa. Code Section 83.292<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-pa-25-pa-code-83-292-nutrient-management\" data-c=\"Pennsylvania\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Nutrient management plan operations: concentrated animal operations (8 or more animal equivalent units where animal density exceeds 2 AEUs per acre on an annualized basis), operations that submit a plan voluntarily, and operations required to develop compliance plans under section 506(j) of the Act. Soil tests for every crop management unit.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>Accurate test procedures; the Penn State recommended procedures in Recommended Soil Testing Procedures for the Northeastern United States (Bulletin 493) may be used, others need Commission approval. The plan lists P, K and pH results, the test date and the lab name.<\/dd><\/div><div><dt>In force from<\/dt><dd>1 October 2006<\/dd><\/div><div><dt>Legal text<\/dt><dd>25 Pa. Code Chapter 83, Subchapter D, Nutrient Management, Section 83.292(e)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.pacodeandbulletin.gov\/Display\/pacode?file=\/secure\/pacode\/data\/025\/chapter83\/s83.292.html\" data-ssr-src rel=\"noopener\">25 Pa. Code Section 83.292<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><li><a href=\"https:\/\/www.pacodeandbulletin.gov\/Display\/pacode?file=\/secure\/pacode\/data\/025\/chapter83\/s83.261.html\" data-ssr-src rel=\"noopener\">25 Pa. Code Section 83.261<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><li><a href=\"https:\/\/www.pacodeandbulletin.gov\/Display\/pacode?file=\/secure\/pacode\/data\/025\/chapter83\/s83.201.html\" data-ssr-src rel=\"noopener\">25 Pa. Code Section 83.201 (definitions)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-pa-25-pa-code-83-292-nutrient-management\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-pa-extension-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-PA\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"representative\" data-q=\"united states | pennsylvania | penn state extension sampling advice | routine soil fertility sampling for cropland and forage | penn state extension, soil fertility management for forage crops: pre-establishment (updated august 2025) | ph, p, k, mg | pennsylvania | penn state | penn state extension | psu extension | aasl\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Pennsylvania<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Pennsylvania only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Routine soil fertility sampling for cropland and forage<\/span><span class=\"ssr-sub\">Penn State Extension sampling advice<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> At least every 3 years, or when the cropping system changes significantly<\/li><li><span class=\"k\">Season<\/span> Fall is the best time logistically. Before a forage seeding: at least 6 months ahead.<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">One sample should not represent more than 10 to 20 acres (4.05 to 8.09 ha)<\/td><td role=\"cell\" data-label=\"Method\">Cores at random over the field, between old crop rows; separate samples from known problem areas.<\/td><td role=\"cell\" data-label=\"Depth\">Plow depth in cultivated fields. No-till: one sample to 6 inches (15.24 cm) and one to 2 inches (5.08 cm). Permanent pasture: 3 to 4 inches (7.62 to 10.16 cm).<\/td><td role=\"cell\" data-label=\"Cores\">At least 15 to 20 spots at random over the field<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/extension.psu.edu\/soil-fertility-management-for-forage-crops-pre-establishment\" data-ssr-src rel=\"noopener\">Penn State Extension, Soil Fertility Management for Forage Crops: Pre-establishment<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-pa-extension-soil-sampling\" data-c=\"Pennsylvania\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice for Pennsylvania fields from Penn State Extension. Not law.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Penn State Extension, Soil Fertility Management for Forage Crops: Pre-establishment (updated August 2025)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/extension.psu.edu\/soil-fertility-management-for-forage-crops-pre-establishment\" data-ssr-src rel=\"noopener\">Penn State Extension, Soil Fertility Management for Forage Crops: Pre-establishment<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-pa-extension-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-sc-r61-43-manure-utilization-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-SC\" data-p=\"fertility\" data-s=\"conditional\" data-m=\"none\" data-q=\"united states | south carolina | standards for the permitting of agricultural animal facilities | soil test before land applying animal manure | s.c. code of regulations r.61-43, as replaced by state register document no. 4997 | sections 100.100.b.9 (swine) and 200.100.b.9 (other animal facilities) | ph, p, k, mg | south carolina | sc | r.61-43 | r 61-43 | animal facilities | manure | des | dhec\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">South Carolina<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">South Carolina only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil test before land applying animal manure<\/span><span class=\"ssr-sub\">Standards for the Permitting of Agricultural Animal Facilities<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Season<\/span> Each field, before manure application (required)<\/li><li><span class=\"k\">Repeat<\/span> Each field should be sampled at least once per year (the rule says &quot;should&quot;)<\/li><li><span class=\"k\">Season<\/span> Where manure goes on less than once a year, at least one sample before returning to that field (required)<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Depth\">Usually 6 to 8 inches (15.24 to 20.32 cm). The rule gives this as the usual depth, not a fixed one.<\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/www.scstatehouse.gov\/regs\/4997.docx\" data-ssr-src rel=\"noopener\">SC State Register Document No. 4997, R.61-43 (final, State Register 45\/5)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-sc-r61-43-manure-utilization-soil-sampling\" data-c=\"South Carolina\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Land where animal manure and other animal byproducts are applied under R.61-43 (Part 100 for swine, Part 200 for other animal facilities). Each field is sampled before manure application, to set the application rate.<\/dd><\/div><div><dt>In force from<\/dt><dd>28 May 2021<\/dd><\/div><div><dt>Legal text<\/dt><dd>S.C. Code of Regulations R.61-43, as replaced by State Register Document No. 4997, Sections 100.100.B.9 (swine) and 200.100.B.9 (other animal facilities)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.scstatehouse.gov\/regs\/4997.docx\" data-ssr-src rel=\"noopener\">SC State Register Document No. 4997, R.61-43 (final, State Register 45\/5)<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-sc-r61-43-manure-utilization-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-sc-clemson-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-SC\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"zone\" data-q=\"united states | south carolina | clemson university agricultural service laboratory sampling guidelines | routine soil fertility sampling | clemson university agricultural service laboratory, guidelines for collecting samples | ph, p, k, mg | south carolina | sc | clemson | clemson extension | agricultural service laboratory\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">South Carolina<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">South Carolina only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Routine soil fertility sampling<\/span><span class=\"ssr-sub\">Clemson University Agricultural Service Laboratory sampling guidelines<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Area per sample\">One sample per 10 acres or less (4.05 ha) on large areas<\/td><td role=\"cell\" data-label=\"Method\">Sample separately areas cropped or fertilized differently, or with different soil types or textures.<\/td><td role=\"cell\" data-label=\"Depth\">Cultivated areas: surface to 6 to 8 inches (15.24 to 20.32 cm). Pasture or turf: 2 to 4 inches (5.08 to 10.16 cm).<\/td><td role=\"cell\" data-label=\"Cores\">Sub-samples from at least 12 locations<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/www.clemson.edu\/public\/regulatory\/ag-srvc-lab\/collecting-guidelines.html\" data-ssr-src rel=\"noopener\">Clemson Agricultural Service Laboratory, Guidelines for Collecting Samples<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-sc-clemson-soil-sampling\" data-c=\"South Carolina\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice from the public land-grant university laboratory for South Carolina. Not law.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Clemson University Agricultural Service Laboratory, Guidelines for Collecting Samples<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.clemson.edu\/public\/regulatory\/ag-srvc-lab\/collecting-guidelines.html\" data-ssr-src rel=\"noopener\">Clemson Agricultural Service Laboratory, Guidelines for Collecting Samples<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-sc-clemson-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-sd-sdsu-extension-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-SD\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"grid zone\" data-q=\"united states | south dakota | sdsu extension, recommended soil sampling methods for south dakota | routine soil fertility and nitrate sampling | sdsu extension p-00132, recommended soil sampling methods for south dakota (september 2019) | ph, p, k, mg | south dakota | sd | sdsu | sdsu extension | p-00132\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">South Dakota<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">South Dakota only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Routine soil fertility and nitrate sampling<\/span><span class=\"ssr-sub\">SDSU Extension, Recommended Soil Sampling Methods for South Dakota<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> P, K, pH, salts, Ca, Mg and micronutrients every 2 to 3 years. Nitrate every year before non-legume crops.<\/li><li><span class=\"k\">Season<\/span> Mobile nutrients, nitrate in particular: late fall once soil is below 50 F, winter, or early spring. Most other tests any time of year.<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">Grid cells no larger than 2.5 acres (1.01 ha)<\/td><td role=\"cell\" data-label=\"Method\">Whole field composite, a grid of 2.5 acres or less, or directed zone sampling by landscape, yield, imagery or soil conductivity.<\/td><td role=\"cell\" data-label=\"Depth\">0 to 6 inches (0 to 15.24 cm) for P, K, pH, organic matter, soluble salts, zinc, iron, manganese, copper and boron. For mobile nutrients such as nitrate, chloride and sulfur, a 24 inch sample split into 0 to 6 and 6 to 24 inches (15.24 to 60.96 cm).<\/td><td role=\"cell\" data-label=\"Cores\">At least 15 cores for a whole field or a zone. A grid sample is usually 6 to 8 cores.<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/extension.sdstate.edu\/sites\/default\/files\/2019-09\/P-00132.pdf\" data-ssr-src rel=\"noopener\">SDSU Extension P-00132 (PDF)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-sd-sdsu-extension-soil-sampling\" data-c=\"South Dakota\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice from the public land-grant university extension service for South Dakota. Not law.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>SDSU Extension P-00132, Recommended Soil Sampling Methods for South Dakota (September 2019)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/extension.sdstate.edu\/sites\/default\/files\/2019-09\/P-00132.pdf\" data-ssr-src rel=\"noopener\">SDSU Extension P-00132 (PDF)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-sd-sdsu-extension-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-tn-ut-extension-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-TN\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"pattern grid zone\" data-q=\"united states | tennessee | ut extension, soil testing for commercial farmers | routine soil fertility sampling | ut extension w 1194, soil testing for commercial farmers (9\/23) | ph, p, k, mg | tennessee | tn | ut extension | utia | w 1194 | university of tennessee\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Tennessee<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Tennessee only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Routine soil fertility sampling<\/span><span class=\"ssr-sub\">UT Extension, Soil Testing for Commercial Farmers<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> Continuous conventional row crops every 2 to 3 years. Double cropping, continuous no-till corn or cotton, and hay every 2 years. Continuous no-till soybeans only, and pasture, every 3 to 5 years. Tobacco and vegetables every year.<\/li><li><span class=\"k\">Season<\/span> September to November, or March to April<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">A composite from an area of no more than 10 acres (4.05 ha). Grids of 2.5 or 5 acres are widely used.<\/td><td role=\"cell\" data-label=\"Method\">Whole field composite in a zigzag pattern, grid, or zones built from soil type, lime and fertilizer history and yield maps. Sample contrasting areas separately.<\/td><td role=\"cell\" data-label=\"Depth\">6 inches (15.24 cm) for pH, P, K, Ca, Mg, micronutrients and organic matter. 12 inches (30.48 cm) for the corn pre-sidedress nitrate test.<\/td><td role=\"cell\" data-label=\"Cores\">About 20 locations per composite. Six or eight cores per grid sample.<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/soillab.tennessee.edu\/wp-content\/uploads\/sites\/129\/2026\/03\/Field-Soil-Sampling.pdf\" data-ssr-src rel=\"noopener\">UT Extension W 1194, Soil Testing for Commercial Farmers (PDF)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-tn-ut-extension-soil-sampling\" data-c=\"Tennessee\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice from the public land-grant university extension service for Tennessee. Not law.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>UT Extension W 1194, Soil Testing for Commercial Farmers (9\/23)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/soillab.tennessee.edu\/wp-content\/uploads\/sites\/129\/2026\/03\/Field-Soil-Sampling.pdf\" data-ssr-src rel=\"noopener\">UT Extension W 1194, Soil Testing for Commercial Farmers (PDF)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-tn-ut-extension-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-tx-agrilife-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-TX\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"zone\" data-q=\"united states | texas | texas a and m agrilife extension, procedure for taking soil samples | routine soil fertility sampling | texas a and m agrilife extension soil, water and forage testing laboratory, soil sample information form, procedure for taking soil samples | ph, p, k, mg | texas | tx | texas a and m | agrilife | agrilife extension | soil water and forage testing laboratory\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Texas<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Texas only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Routine soil fertility sampling<\/span><span class=\"ssr-sub\">Texas A and M AgriLife Extension, Procedure for Taking Soil Samples<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Wait<\/span> At least 2 months after the last fertilization<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">One composite sample for every 10 to 40 acres (4.05 to 16.19 ha)<\/td><td role=\"cell\" data-label=\"Method\">Separate samples for different soil types, land uses or fertilizer rates, cropping histories and terrain. Avoid fertilizer bands, small gullies, depressions, terraces, waterways and unusual areas.<\/td><td role=\"cell\" data-label=\"Depth\">0 to 6 inches (0 to 15.24 cm)<\/td><td role=\"cell\" data-label=\"Cores\">10 to 15 cores per composite (one core, then 9 to 14 more)<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/soiltesting.tamu.edu\/soiltesting\/wp-content\/uploads\/sites\/13\/2023\/05\/soilwebform.pdf\" data-ssr-src rel=\"noopener\">Texas A and M AgriLife Extension, Soil Sample Information Form (PDF)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-tx-agrilife-soil-sampling\" data-c=\"Texas\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice from the public land-grant university extension laboratory for Texas. Not law.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Texas A and M AgriLife Extension Soil, Water and Forage Testing Laboratory, Soil Sample Information Form, Procedure for Taking Soil Samples<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/soiltesting.tamu.edu\/soiltesting\/wp-content\/uploads\/sites\/13\/2023\/05\/soilwebform.pdf\" data-ssr-src rel=\"noopener\">Texas A and M AgriLife Extension, Soil Sample Information Form (PDF)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-tx-agrilife-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-tx-tceq-rg-408-cafo-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-TX\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"grid representative\" data-q=\"united states | texas | tceq regulatory guidance for concentrated animal feeding operations | soil monitoring on cafo waste application fields | tceq rg-408, soil sampling for concentrated animal-feeding operations (cafos), revised december 2017 | ph, p, k, mg | texas | tx | tceq | rg-408 | cafo | concentrated animal feeding operation | land management unit | lmu\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Texas<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Texas only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil monitoring on CAFO waste application fields<\/span><span class=\"ssr-sub\">TCEQ regulatory guidance for concentrated animal feeding operations<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Season<\/span> Before waste application begins, and after it begins<\/li><li><span class=\"k\">Repeat<\/span> GPS grid method: sampled annually on the same grid layout<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">Composite per land management unit (LMU). Subsample locations by professional judgment, grid with random selection, or GPS grid.<\/td><td role=\"cell\" data-label=\"Depth\">0 to 6 inches (0 to 15.24 cm) and 6 to 24 inches (15.24 to 60.96 cm). Where 0 to 2 and 2 to 6 inch samples (0 to 5.08 and 5.08 to 15.24 cm) are required, take the 0 to 6 inch sample and divide it.<\/td><td role=\"cell\" data-label=\"Cores\">10 to 15 subsamples per depth per LMU, preferably 15<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/www.tceq.texas.gov\/downloads\/permitting\/wastewater\/agriculture\/regulatory-guidance\/rg-408.pdf\" data-ssr-src rel=\"noopener\">TCEQ RG-408, Soil Sampling for CAFOs (PDF)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-tx-tceq-rg-408-cafo-soil-sampling\" data-c=\"Texas\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>State agency guidance for CAFOs that apply animal waste to land. Not law: the requirements sit in 30 TAC Chapter 321, Subchapter B and the CAFO general permit.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>An agronomic soil laboratory, using the test methods in the Texas A and M AgriLife Soil, Water and Forage Testing Laboratory procedures.<\/dd><\/div><div><dt>Field identifiers<\/dt><dd>GPS each subsample location and keep it for two years (grid and GPS grid methods).<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>TCEQ RG-408, Soil Sampling for Concentrated Animal-Feeding Operations (CAFOs), revised December 2017<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.tceq.texas.gov\/downloads\/permitting\/wastewater\/agriculture\/regulatory-guidance\/rg-408.pdf\" data-ssr-src rel=\"noopener\">TCEQ RG-408, Soil Sampling for CAFOs (PDF)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-tx-tceq-rg-408-cafo-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-ut-usu-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-UT\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"zone\" data-q=\"united states | utah | usu analytical labs, soil sampling procedure | routine soil fertility sampling | usu analytical labs, soil analysis information sheet, soil sampling procedure (rev. 7\/2023) | ph, p, k, mg | utah | ut | usu | usu extension | usu analytical labs | utah state university\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Utah<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Utah only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Routine soil fertility sampling<\/span><span class=\"ssr-sub\">USU Analytical Labs, Soil Sampling Procedure<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Season<\/span> Any time of year, early fall often preferred. Spring for the special nitrate test.<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">Sample separately each area of uniform color, texture, drainage, and the same cropping and fertilizer treatment last year, from locations in a random pattern. Leave out non-typical spots or sample them separately.<\/td><td role=\"cell\" data-label=\"Depth\">Standard topsoil sample: surface to 12 inches (0 to 30.48 cm). For nitrate when applying manure, also 12 to 24 inches (30.48 to 60.96 cm) or 12 to 36 inches (30.48 to 91.44 cm).<\/td><td role=\"cell\" data-label=\"Cores\">8 to 10 locations per sample area<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/extension.usu.edu\/rich\/files\/soilform2023v2.pdf\" data-ssr-src rel=\"noopener\">USU Analytical Labs, Soil Analysis Information Sheet (PDF, Rev. 7\/2023)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-ut-usu-soil-sampling\" data-c=\"Utah\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice from the public land-grant university laboratory for Utah. Not law.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>USU Analytical Labs, Soil Analysis Information Sheet, Soil Sampling Procedure (Rev. 7\/2023)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/extension.usu.edu\/rich\/files\/soilform2023v2.pdf\" data-ssr-src rel=\"noopener\">USU Analytical Labs, Soil Analysis Information Sheet (PDF, Rev. 7\/2023)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-ut-usu-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-vt-rap-6-03-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-VT\" data-p=\"fertility\" data-s=\"conditional\" data-m=\"none\" data-q=\"united states | vermont | required agricultural practices (raps), agricultural nonpoint source pollution control program | soil sampling on fields that receive manure or fertilizer | vermont required agricultural practices rule for the agricultural nonpoint source pollution control program | section 6.03(c) | ph, p, k, mg | vermont | vt | raps | rap | required agricultural practices | agency of agriculture | modified morgan\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Vermont<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Vermont only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil sampling on fields that receive manure or fertilizer<\/span><span class=\"ssr-sub\">Required Agricultural Practices (RAPs), Agricultural Nonpoint Source Pollution Control Program<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> At least once in every five years<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Depth\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/www.agriculture.vermont.gov\/sites\/agriculture\/files\/documents\/RAPFINALRULE12-21-2018_WEB.pdf\" data-ssr-src rel=\"noopener\">Vermont Required Agricultural Practices Rule (effective November 23, 2018), PDF<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-vt-rap-6-03-soil-sampling\" data-c=\"Vermont\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Farms that must follow the RAPs (Section 3.1) but are below the Certified Small Farm Operation threshold of Section 4.1: every field that receives mechanical application of manure, agricultural wastes or fertilizer.<\/dd><\/div><div><dt>Outside the rule<\/dt><dd>Certified Small Farm Operations (Section 4.1 sets the livestock numbers, and the more than 50 acres of annual cropland or vegetables with mechanically applied fertilizer, manure or agricultural wastes, that make a farm one) and permitted Medium and Large Farm Operations. They follow a field-by-field nutrient management plan to NRCS Code 590 or an approved equivalent under 6.03(a) instead.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>Modified Morgan extractant, or other equivalent standards approved by the Secretary. Soil analysis records kept on the farm for five years.<\/dd><\/div><div><dt>In force from<\/dt><dd>23 November 2018<\/dd><\/div><div><dt>Legal text<\/dt><dd>Vermont Required Agricultural Practices Rule for the Agricultural Nonpoint Source Pollution Control Program, Section 6.03(c)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.agriculture.vermont.gov\/sites\/agriculture\/files\/documents\/RAPFINALRULE12-21-2018_WEB.pdf\" data-ssr-src rel=\"noopener\">Vermont Required Agricultural Practices Rule (effective November 23, 2018), PDF<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-vt-rap-6-03-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-vt-uvm-extension-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-VT\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"pattern zone\" data-q=\"united states | vermont | uvm extension agricultural and environmental testing lab, how to take a soil sample | routine soil fertility sampling | university of vermont extension, how to take a soil sample (3\/2022) | ph, p, k, mg | vermont | vt | uvm | uvm extension | agricultural testing lab\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Vermont<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Vermont only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Routine soil fertility sampling<\/span><span class=\"ssr-sub\">UVM Extension Agricultural and Environmental Testing Lab, How to Take a Soil Sample<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Season<\/span> Before lime, fertilizer or manure is added<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">Zig-zag across an area as uniform as possible in soil type, cropping and fertilizing history, one you expect to fertilize as a unit.<\/td><td role=\"cell\" data-label=\"Depth\">Lawns, turf and other perennial sod: 4 to 6 inches (10.16 to 15.24 cm). Annually tilled crops: tillage depth, usually 6 to 10 inches (15.24 to 25.4 cm).<\/td><td role=\"cell\" data-label=\"Cores\">At least 15 to 20 for areas larger than a home garden or lawn of up to 10,000 square feet (10 cores minimum for those)<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/uvm.edu\/d10-files\/documents\/2024-05\/how-to-take-a-soil-sample-2.pdf\" data-ssr-src rel=\"noopener\">UVM Extension, How to Take a Soil Sample (PDF)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-vt-uvm-extension-soil-sampling\" data-c=\"Vermont\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice from the public land-grant university extension laboratory for Vermont. Not law.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>University of Vermont Extension, How to Take a Soil Sample (3\/2022)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/uvm.edu\/d10-files\/documents\/2024-05\/how-to-take-a-soil-sample-2.pdf\" data-ssr-src rel=\"noopener\">UVM Extension, How to Take a Soil Sample (PDF)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-vt-uvm-extension-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-va-4vac50-85-140-nutrient-management-plan\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-VA\" data-p=\"fertility\" data-s=\"conditional\" data-m=\"grid zone\" data-q=\"united states | virginia | nutrient management training and certification regulations | soil analysis behind a nutrient management plan | 4vac50-85, nutrient management training and certification regulations | 4vac50-85-140 a 2 f and d 4 | ph, p, k, mg | virginia | va | 4vac50-85 | 4 vac 50-85 | nutrient management | dcr | certified nutrient management planner | mehlich i\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Virginia<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Virginia only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil analysis behind a nutrient management plan<\/span><span class=\"ssr-sub\">Nutrient Management Training and Certification Regulations<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Result valid<\/span> Dated no more than 3 years before the plan begins<\/li><li><span class=\"k\">Repeat<\/span> The plan must recommend soil analysis for each field at least once every 3 years<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">A composite sample should represent up to about 20 acres (8.09 ha). Strip-cropped fields may be combined where soils, cropping history and fertility are similar.<\/td><td role=\"cell\" data-label=\"Method\">Representative results by standard sampling and analysis methods (Methods of Soil Analysis, Part 3, 1996). Subfield grids or management zones may be used.<\/td><td role=\"cell\" data-label=\"Depth\">Fields not tilled in the past 3 years: 0 to 4 inches (0 to 10.16 cm). Fields tilled in the past 3 years: 0 to 6 inches (0 to 15.24 cm).<\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/law.lis.virginia.gov\/admincode\/title4\/agency50\/chapter85\/section140\/\" data-ssr-src rel=\"noopener\">4VAC50-85-140, Required nutrient management plan procedures<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-va-4vac50-85-140-nutrient-management-plan\" data-c=\"Virginia\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Binds certified nutrient management planners, for the plans they write under Virginia&#8217;s voluntary certification program. It does not by itself require a farm to sample: a farm is covered only where it follows such a plan, and other laws, permits or contracts decide which farms must have one.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>Mehlich I extraction for phosphorus, or other methods and laboratories approved by the department and correlated to Mehlich I.<\/dd><\/div><div><dt>In force from<\/dt><dd>20 November 2014<\/dd><\/div><div><dt>Legal text<\/dt><dd>4VAC50-85, Nutrient Management Training and Certification Regulations, 4VAC50-85-140 A 2 f and D 4<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/law.lis.virginia.gov\/admincode\/title4\/agency50\/chapter85\/section140\/\" data-ssr-src rel=\"noopener\">4VAC50-85-140, Required nutrient management plan procedures<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><li><a href=\"https:\/\/law.lis.virginia.gov\/admincode\/title4\/agency50\/chapter85\/section20\/\" data-ssr-src rel=\"noopener\">4VAC50-85-20, Purpose<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-va-4vac50-85-140-nutrient-management-plan\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-va-9vac25-192-70-afo-soil-monitoring\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-VA\" data-p=\"fertility\" data-s=\"conditional\" data-m=\"representative\" data-q=\"united states | virginia | virginia pollution abatement (vpa) general permit for animal feeding operations and animal waste management | soil monitoring on animal waste land application sites | 9vac25-192, vpa regulation and general permit for animal feeding operations and animal waste management | 9vac25-192-70, part i a 8 and a 9, table 2 (part iii repeats them for animal waste end-users) | ph, p, k, mg | virginia | va | 9vac25-192 | vpa | vpg1 | animal feeding operation | afo | deq | liquid manure\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Virginia<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Virginia only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil monitoring on animal waste land application sites<\/span><span class=\"ssr-sub\">Virginia Pollution Abatement (VPA) general permit for animal feeding operations and animal waste management<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> Once every 3 years (1\/3 years)<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">Composite samples. pH, phosphorus, potash, calcium and magnesium.<\/td><td role=\"cell\" data-label=\"Depth\">0 to 6 inches (0 to 15.24 cm), unless the approved nutrient management plan says otherwise<\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/law.lis.virginia.gov\/admincode\/title9\/agency25\/chapter192\/section70\/\" data-ssr-src rel=\"noopener\">9VAC25-192-70, Contents of the general permit<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-va-9vac25-192-70-afo-soil-monitoring\" data-c=\"Virginia\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Owners of animal feeding operations with 300 or more animal units using a liquid manure collection and storage system, and animal waste end-users (Part III), once the department accepts their registration for the VPA general permit. Applies on their land application sites.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>Methods specified in the approved nutrient management plan. Monitoring data kept on site for five years.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>9VAC25-192, VPA Regulation and General Permit for Animal Feeding Operations and Animal Waste Management, 9VAC25-192-70, Part I A 8 and A 9, Table 2 (Part III repeats them for animal waste end-users)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/law.lis.virginia.gov\/admincode\/title9\/agency25\/chapter192\/section70\/\" data-ssr-src rel=\"noopener\">9VAC25-192-70, Contents of the general permit<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-va-9vac25-192-70-afo-soil-monitoring\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-va-vt-extension-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-VA\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"pattern grid zone\" data-q=\"united states | virginia | virginia cooperative extension, soil sampling instructions for the farm | routine soil fertility sampling | virginia cooperative extension spes-141np, soil sampling instructions for the farm (2019) | ph, p, k, mg | virginia | va | virginia tech | virginia cooperative extension | vce | spes-141np | soil testing lab\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Virginia<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Virginia only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Routine soil fertility sampling<\/span><span class=\"ssr-sub\">Virginia Cooperative Extension, Soil Sampling Instructions for the Farm<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Season<\/span> Fall sampling suggested, so lime can go on before the next season<\/li><li><span class=\"k\">Wait<\/span> At least 6 to 8 weeks after liming or fertilizing<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">Areas of 5 to 10 acres (2.02 to 4.05 ha) where fields vary. Precision grids typically 2.5 acres, 1 acre on small fields.<\/td><td role=\"cell\" data-label=\"Method\">Zig-zag across each uniform area. Grid sampling, typically 2.5 acres, or smart sampling by topography, yield or soil map unit.<\/td><td role=\"cell\" data-label=\"Depth\">Cropland: plow depth, 6 to 8 inches or more (15.24 to 20.32 cm). Pasture and no-till crop fields: 2 to 4 inches (5.08 to 10.16 cm).<\/td><td role=\"cell\" data-label=\"Cores\">20 or more places per field, and at least 5 cores per acre represented. Grid points: 6 to 8 subsamples.<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/www.soiltest.vt.edu\/content\/dam\/soiltest_vt_edu\/PDF\/farm-sampling.pdf\" data-ssr-src rel=\"noopener\">Virginia Cooperative Extension SPES-141NP (PDF)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-va-vt-extension-soil-sampling\" data-c=\"Virginia\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice from the public land-grant university extension service for Virginia. Not law.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>Virginia Cooperative Extension SPES-141NP, Soil Sampling Instructions for the Farm (2019)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.soiltest.vt.edu\/content\/dam\/soiltest_vt_edu\/PDF\/farm-sampling.pdf\" data-ssr-src rel=\"noopener\">Virginia Cooperative Extension SPES-141NP (PDF)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-va-vt-extension-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-wa-wac-16-611-020-dairy-soil-analysis\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-WA\" data-p=\"fertility\" data-s=\"conditional\" data-m=\"none\" data-q=\"united states | washington | dairy nutrient management act, recordkeeping | dairy soil analysis records: yearly postharvest nitrate and a soil analysis every three years | wac 16-611-020, recordkeeping requirements (dairy nutrient management) | wac 16-611-020(2)(a) | ph, p, k, mg | washington | wa | wac 16-611 | wsda | dairy nutrient management | rcw 90.64 | postharvest nitrate\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Washington<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Washington only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Dairy soil analysis records: yearly postharvest nitrate and a soil analysis every three years<\/span><span class=\"ssr-sub\">Dairy Nutrient Management Act, recordkeeping<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> Postharvest soil nitrate nitrogen analysis every year<\/li><li><span class=\"k\">Repeat<\/span> A current soil analysis every three years (contents under Laboratory)<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Depth\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-conditional\">Conditional<\/span><a class=\"ssr-src\" href=\"https:\/\/app.leg.wa.gov\/wac\/default.aspx?cite=16-611-020\" data-ssr-src rel=\"noopener\">WAC 16-611-020, Washington State Legislature<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-wa-wac-16-611-020-dairy-soil-analysis\" data-c=\"Washington\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Dairy producers, who must keep records showing that nutrients applied to crop land were within acceptable agronomic rates.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>Three-year analysis: organic matter, pH, ammonium nitrogen, phosphorus (Bray-1 below pH 7, Olsen bicarbonate at pH 7 or above), potassium and electrical conductivity.<\/dd><\/div><div><dt>In force from<\/dt><dd>29 November 2012<\/dd><\/div><div><dt>Legal text<\/dt><dd>WAC 16-611-020, Recordkeeping requirements (dairy nutrient management), WAC 16-611-020(2)(a)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/app.leg.wa.gov\/wac\/default.aspx?cite=16-611-020\" data-ssr-src rel=\"noopener\">WAC 16-611-020, Washington State Legislature<\/a> <span class=\"ssr-kind\">Law<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-wa-wac-16-611-020-dairy-soil-analysis\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-wa-wsu-eb1987e-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-WA\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"zone\" data-q=\"united states | washington | wsu extension, eastern washington nutrient management guide (dryland winter wheat) | soil sampling for dryland winter wheat nutrient management | wsu extension eb1987e, eastern washington nutrient management guide (published march 2005, revised july 2013) | ph, p, k, mg | washington | wa | wsu | wsu extension | eb1987e | eastern washington | dryland wheat\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Washington<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Washington only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Soil sampling for dryland winter wheat nutrient management<\/span><span class=\"ssr-sub\">WSU Extension, Eastern Washington Nutrient Management Guide (dryland winter wheat)<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Area per sample\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Method\">A field composite, or 2 to 3 management units by slope, aspect and drainage, each sampled separately.<\/td><td role=\"cell\" data-label=\"Depth\">Winter wheat nitrogen: one-foot increments to at least 4 feet (121.92 cm) or a restrictive layer. Phosphorus: the surface foot, 0 to 12 inches (0 to 30.48 cm).<\/td><td role=\"cell\" data-label=\"Cores\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/wpcdn.web.wsu.edu\/cahnrs\/uploads\/sites\/16\/EB1987E-3.pdf\" data-ssr-src rel=\"noopener\">WSU Extension EB1987E (PDF)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-wa-wsu-eb1987e-soil-sampling\" data-c=\"Washington\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice from the public land-grant university extension service for eastern Washington dryland winter wheat. Not law.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>WSU Extension EB1987E, Eastern Washington Nutrient Management Guide (published March 2005, revised July 2013)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/wpcdn.web.wsu.edu\/cahnrs\/uploads\/sites\/16\/EB1987E-3.pdf\" data-ssr-src rel=\"noopener\">WSU Extension EB1987E (PDF)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-wa-wsu-eb1987e-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-wi-uw-a2100-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-WI\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"pattern grid zone\" data-q=\"united states | wisconsin | uw extension a2100, sampling soils for testing | routine soil fertility sampling | university of wisconsin-extension a2100, sampling soils for testing (peters and laboski, 2013) | ph, p, k, mg | wisconsin | wi | uw extension | a2100 | sampling soils for testing | uw madison\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Wisconsin<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Wisconsin only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Routine soil fertility sampling<\/span><span class=\"ssr-sub\">UW Extension A2100, Sampling Soils for Testing<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Repeat<\/span> At least every 4 years. Sands and loamy sands every 2 years.<\/li><li><span class=\"k\">Season<\/span> Any convenient time; fall may be best, so lime and fertilizer advice arrives in time. Hayfields after any cutting. Stay consistent from one year to the next.<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">One composite per 5 acres (2.02 ha) on responsive fields and fields not sampled in the past 4 years. Fewer samples on nonresponsive fields tested within 4 years (Table 1).<\/td><td role=\"cell\" data-label=\"Method\">W-shaped pattern for a whole field composite. Unaligned grid-point sampling at 200 feet (about 1 acre) or, on nonresponsive fields, 300 feet (2 to 2.5 acres). Zone (smart) sampling.<\/td><td role=\"cell\" data-label=\"Depth\">Plow depth or at least 6 inches (15.24 cm). Chisel or disk: three quarters of tillage depth. Ridge till: 6 inches on ridges, 4 in furrows. No-till: 6 to 7 inches (17.78 cm) for fertilizer advice, plus 2 inches for pH if an acid layer is suspected.<\/td><td role=\"cell\" data-label=\"Cores\">At least 10 cores per composite. 10 to 20 cores give a more representative sample.<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/portage.extension.wisc.edu\/files\/2024\/07\/Sampoling-Soils-for-Testing.pdf\" data-ssr-src rel=\"noopener\">UW Extension A2100, Sampling Soils for Testing (PDF)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-wi-uw-a2100-soil-sampling\" data-c=\"Wisconsin\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice from the public land-grant university extension service for Wisconsin. Not law in itself; plans prepared to the NRCS 590 standard follow its sampling techniques.<\/dd><\/div><div><dt>Laboratory and analysis<\/dt><dd>A Wisconsin certified laboratory, for plans that must follow the NRCS 590 standard.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>University of Wisconsin-Extension A2100, Sampling Soils for Testing (Peters and Laboski, 2013)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/portage.extension.wisc.edu\/files\/2024\/07\/Sampoling-Soils-for-Testing.pdf\" data-ssr-src rel=\"noopener\">UW Extension A2100, Sampling Soils for Testing (PDF)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-wi-uw-a2100-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<tbody id=\"rule-us-wy-uw-extension-dry-bean-soil-sampling\" class=\"ssr-rec\" role=\"rowgroup\" data-c=\"US\" data-r=\"US-WY\" data-p=\"fertility\" data-s=\"official_guidance\" data-m=\"none\" data-q=\"united states | wyoming | university of wyoming extension, nutrient management guidelines for dry beans | pre-plant soil sampling for dry beans only | university of wyoming cooperative extension service b-1016r, nutrient management guidelines for dry beans (june 2005) | ph, p, k, mg | wyoming | wy | university of wyoming | uw extension | b-1016r | dry beans\">\n<tr role=\"row\" class=\"ssr-main\"><th role=\"rowheader\" scope=\"row\" data-label=\"Country \/ region\"><span class=\"ssr-place\">Wyoming<\/span><span class=\"ssr-sub\">United States<\/span><span class=\"ssr-sub\">Wyoming only. Other states set their own rules.<\/span><\/th><td role=\"cell\" data-label=\"Purpose \/ programme\"><span class=\"ssr-pur\">Pre-plant soil sampling for dry beans only<\/span><span class=\"ssr-sub\">University of Wyoming Extension, Nutrient Management Guidelines for Dry Beans<\/span><\/td><td role=\"cell\" data-label=\"Time \/ frequency\"><ul class=\"ssr-time\"><li><span class=\"k\">Season<\/span> Before planting. Sample at the same time of year each time.<\/li><\/ul><\/td><td role=\"cell\" data-label=\"Area per sample\">Typical approach: one composite from a 20 to 40 acre field (8.09 to 16.19 ha)<\/td><td role=\"cell\" data-label=\"Method\"><span class=\"ssr-ns\">Not specified<\/span><\/td><td role=\"cell\" data-label=\"Depth\">Tillage zone, usually 6 or 8 inches (15.24 or 20.32 cm), for pH, organic matter, N, P, K and micronutrients. For nitrate, a 12 inch (30.48 cm) core split into 0 to 6 and 6 to 12 inches, unless tillage mixes the soil to one foot.<\/td><td role=\"cell\" data-label=\"Cores\">15 to 20 random locations<\/td><td role=\"cell\" data-label=\"Status and source\" class=\"ssr-stat\"><span class=\"ssr-badge is-official_guidance\">Official guidance<\/span><a class=\"ssr-src\" href=\"https:\/\/www.wyoextension.org\/agpubs\/pubs\/B1016R.pdf\" data-ssr-src rel=\"noopener\">University of Wyoming Extension B-1016R (PDF)<\/a><\/td><\/tr>\n<tr role=\"row\" class=\"ssr-more\"><td role=\"cell\" colspan=\"8\"><details data-id=\"us-wy-uw-extension-dry-bean-soil-sampling\" data-c=\"Wyoming\"><summary>Who it applies to and every source<\/summary><div class=\"ssr-det is-short\"><dl class=\"ssr-facts\"><div><dt>Who it applies to<\/dt><dd>Advice from the public land-grant university extension service for Wyoming, written for dry bean fields only (its fertilizer tables are for irrigated dry beans). Not other crops. Not law.<\/dd><\/div><div><dt>In force from<\/dt><dd>Under review<\/dd><\/div><div><dt>Legal text<\/dt><dd>University of Wyoming Cooperative Extension Service B-1016R, Nutrient Management Guidelines for Dry Beans (June 2005)<\/dd><\/div><\/dl><div class=\"ssr-srcbox\"><h3>Sources<\/h3><ul class=\"ssr-srcs\"><li><a href=\"https:\/\/www.wyoextension.org\/agpubs\/pubs\/B1016R.pdf\" data-ssr-src rel=\"noopener\">University of Wyoming Extension B-1016R (PDF)<\/a> <span class=\"ssr-kind\">Guidance<\/span><\/li><\/ul><p class=\"ssr-dates\">Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.<\/p><p class=\"ssr-more-link\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-wy-uw-extension-dry-bean-soil-sampling\">The exact wording, in the source language, on the United States page<\/a><\/p><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<!-- SSR-ROWS END -->\n    <\/table>\n    <p class=\"ssr-empty\" id=\"ssr-empty\" hidden>No rule matches these filters. Clear one, or search for another country.<\/p>\n  <\/div>\n<\/section>\n\n<!-- SSR-EST-DATA BEGIN -->\n<script type=\"application\/json\" id=\"ssr-est-data\" nowprocket data-no-optimize=\"1\" data-no-defer=\"1\" data-no-minify=\"1\">[{\"id\":\"ar-magyp-soil-sampling-instructions\",\"c\":\"AR\",\"cn\":\"Argentina\",\"place\":\"Argentina\",\"prog\":\"Ministry of Agriculture (MAGyP), Cerrando Brechas Productivas, soil sampling instructions\",\"purpose\":\"Soil sample for fertility analysis\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":20,\"max_ac\":null,\"area\":\"One composite per 5 to 10 ha (at least 10 subsamples), or per 15 to 20 ha (20 subsamples), on uniform ground\",\"exc\":null,\"cores_min\":10,\"cores\":\"At least 10 subsamples per 5 to 10 ha; 20 subsamples per 15 to 20 ha\",\"table\":null,\"landUses\":[],\"depth\":\"Generally 0 to 20 cm, as one layer or split into 0 to 10 and 10 to 20 cm. Fruit crops in 15 to 20 cm steps to 100 to 150 cm, at the adviser\u2019s discretion.\",\"method\":\"Separate homogeneous zones and sample each. Zigzag, diagonals or simple random.\",\"time\":[],\"src\":\"https:\/\/www.magyp.gob.ar\/brechaproductiva\/_pdf\/instrucciones-para-toma-de-muestra-de-suelo.pdf\",\"srcLabel\":\"MAGyP, Instrucciones para toma de muestra de suelo (PDF)\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/argentina\/#rule-ar-magyp-soil-sampling-instructions\"},{\"id\":\"be-vlg-mestdecreet-nitraatresidu\",\"c\":\"BE\",\"cn\":\"Belgium\",\"place\":\"Flanders\",\"prog\":\"Mestdecreet, nitrate residue farm evaluation (bedrijfsevaluatie), seventh manure action programme (MAP 7)\",\"purpose\":\"Autumn nitrate residue, farm evaluation\",\"type\":\"Conditional\",\"guidance\":0,\"max_ha\":5,\"max_ac\":null,\"area\":\"From 2026: one subsample per 5 ha (previously one per 2 ha)\",\"exc\":null,\"cores_min\":40,\"cores\":\"From 2026: 40 sampling points per subsample (previously 15)\",\"table\":null,\"landUses\":[],\"depth\":\"0 to 90 cm\",\"method\":\"From 2026, stratified sampling: the parcel is split into zones (strata) with one random point in each.\",\"time\":[\"Season: From 2026, 1 October to 30 November. The consolidated decree definition still reads 1 October to 15 November.\"],\"src\":\"https:\/\/www.ejustice.just.fgov.be\/eli\/decreet\/2006\/12\/22\/2006037097\/justel\",\"srcLabel\":\"Mestdecreet, consolidated text (Justel, Belgian Official Journal)\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/belgium\/#rule-be-vlg-mestdecreet-nitraatresidu\"},{\"id\":\"br-embrapa-soil-sampling-liming-fertilising\",\"c\":\"BR\",\"cn\":\"Brazil\",\"place\":\"Brazil\",\"prog\":\"Embrapa, Amostragem de solo para recomenda\u00e7\u00e3o de calagem e aduba\u00e7\u00e3o\",\"purpose\":\"Soil sample for lime and fertiliser recommendations\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":10,\"max_ac\":null,\"area\":\"Homogeneous plots (talh\u00f5es) of at most 10 ha, one composite each\",\"exc\":null,\"cores_min\":10,\"cores\":\"At least 10 points per homogeneous plot, ideally about 20\",\"table\":null,\"landUses\":[],\"depth\":\"0 to 20 cm for conventional tillage, perennial crops, and no-till fertilised in the row up to the 6th consecutive crop. 0 to 10 cm for no-till after the 6th crop, established pasture and undisturbed natural grassland. 20 to 40 and 40 to 60 cm before the first planting, to find barriers.\",\"method\":\"Split the area into homogeneous plots by soil colour, relief, texture, drainage, erosion, vegetation or previous crop, cropping, liming and fertiliser history, management and yield; walk each plot at random in a zigzag.\",\"time\":[\"Season: Annual crops: end of the rainy season, ahead of the next planting. Perennial crops in production: just after harvest, before the next fertilising.\",\"Wait: Where crop nutrition is monitored: 30 days after the last fertiliser, 15 days after fertigation\",\"Repeat: Where crop nutrition is monitored: every year, sometimes twice a year, alongside leaf analysis\"],\"src\":\"https:\/\/www.infoteca.cnptia.embrapa.br\/infoteca\/bitstream\/doc\/655892\/1\/folderamostragemsolo.pdf\",\"srcLabel\":\"Embrapa, Amostragem de Solo para Recomenda\u00e7\u00e3o de Calagem e Aduba\u00e7\u00e3o (PDF folder, 2009)\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/brazil\/#rule-br-embrapa-soil-sampling-liming-fertilising\"},{\"id\":\"ca-ab-agriculture-soil-sampling-guidance\",\"c\":\"CA\",\"cn\":\"Canada\",\"place\":\"Alberta\",\"prog\":\"Alberta Agriculture soil sampling advice\",\"purpose\":\"Routine soil fertility sampling\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":30,\"max_ac\":null,\"area\":\"One random composite sample suits fields under 30 ha (80 acres) that have been uniformly cropped and have little natural variation\",\"exc\":null,\"cores_min\":15,\"cores\":\"15 to 20 cores per bulk sample\",\"table\":null,\"landUses\":[],\"depth\":\"Each core split 0 to 15, 15 to 30 and 30 to 60 cm. N and S from 0 to 60 cm, P and K from 0 to 15 cm.\",\"method\":\"Random composite, directed random by management zone, benchmark, landscape-directed benchmark or grid sampling.\",\"time\":[\"Repeat: Ideally every field every year; sampling every other year, with estimates between, is an alternative\",\"Season: Spring-sown annual crops: early spring once the soil has thawed, or the previous fall once soil is below 5 to 7 degrees C. Established perennials: each spring before active growth.\"],\"src\":\"https:\/\/www1.agriculture.alberta.ca\/$department\/deptdocs.nsf\/all\/epw11920\/$FILE\/3-3.pdf\",\"srcLabel\":\"Alberta Agriculture, Chapter 3.3 Soil Sampling (PDF)\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/canada\/#rule-ca-ab-agriculture-soil-sampling-guidance\"},{\"id\":\"ca-bc-agriculture-basic-soil-fertility-sampling\",\"c\":\"CA\",\"cn\":\"Canada\",\"place\":\"British Columbia\",\"prog\":\"BC Ministry of Agriculture and Food soil sampling advice\",\"purpose\":\"Basic soil fertility test (pH, P, K)\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":10,\"max_ac\":null,\"area\":\"Sampling zones of up to 10 ha (25 acres)\",\"exc\":null,\"cores_min\":15,\"cores\":\"15 to 20 samples at random locations for most field crops; 30 to 40 where band locations are unknown\",\"table\":null,\"landUses\":[],\"depth\":\"Surface to 15 cm (6 inches)\",\"method\":\"Composite sample from each sampling zone of uniform soils, cropping and management; random locations across the zone.\",\"time\":[\"Repeat: Every 1 to 3 years\",\"Season: Before planting or before the spring growing season; fall where spring sampling is not practical\"],\"src\":\"https:\/\/www2.gov.bc.ca\/gov\/content\/industry\/agriculture-seafood\/agricultural-land-and-environment\/soil-nutrients\/nutrient-management\/what-to-apply\/soil-nutrient-testing\/soil-sampling-guidelines\",\"srcLabel\":\"gov.bc.ca, Soil sampling guidelines\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/canada\/#rule-ca-bc-agriculture-basic-soil-fertility-sampling\"},{\"id\":\"ca-nl-ffa-soil-sampling-guide\",\"c\":\"CA\",\"cn\":\"Canada\",\"place\":\"Newfoundland and Labrador\",\"prog\":\"Provincial Soil, Plant and Feed Laboratory sampling advice\",\"purpose\":\"Routine soil fertility sampling\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":5,\"max_ac\":null,\"area\":\"One sample per 5 ha\",\"exc\":null,\"cores_min\":10,\"cores\":\"10 individual samples per field of 5 ha or less\",\"table\":null,\"landUses\":[],\"depth\":\"20 cm; 6 cm for sod crops (depths given in the shovel directions).\",\"method\":\"Walk a W pattern across each uniform field; sample different areas separately.\",\"time\":[\"Repeat: Every year for a field in rotation; every 2 years when growing the same crop\",\"Season: Any time; fall sampling returns results in time for the next planting, early fall for fall liming\"],\"src\":\"https:\/\/www.gov.nl.ca\/fisheries\/files\/Soil-Sampling-Guide-June-2025.pdf\",\"srcLabel\":\"Government of Newfoundland and Labrador, Soil Sampling Guide (PDF, June 2025)\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/canada\/#rule-ca-nl-ffa-soil-sampling-guide\"},{\"id\":\"ca-on-o-reg-267-03-nmp-soil-test\",\"c\":\"CA\",\"cn\":\"Canada\",\"place\":\"Ontario\",\"prog\":\"Nutrient Management Act, 2002: nutrient management plans for land receiving manure or anaerobic digestion output\",\"purpose\":\"Soil test for a nutrient management plan\",\"type\":\"Conditional\",\"guidance\":0,\"max_ha\":10,\"max_ac\":null,\"area\":\"Normally at most 10 ha (25 acres) per sample. Up to 20 ha (50 acres) may be permitted where there is evidence that nutrient content is uniform (within 15 percent of the mean) and management is uniform.\",\"exc\":\"Up to 20 ha: evidence that nutrient content is uniform (within 15 percent of the mean) and field management is uniform.\",\"cores_min\":20,\"cores\":\"At least 20 sub-samples under 5 ha (12.5 acres), plus at least 2 more for each additional hectare.\",\"table\":null,\"landUses\":[],\"depth\":\"About 15 cm (6 inches), the depth normally tilled, also where no tillage is used. Soil nitrate samples 30 cm (12 inches).\",\"method\":\"Representative composite from each field or section. Zig-zag traverse with random cores; separate samples for parts that differ markedly.\",\"time\":[\"Repeat: A sample while preparing each plan after the first. A plan ceases to be in force on its fifth anniversary, so at least once in each 5 year period.\",\"Result valid: P and pH tested within the 5 years before nutrients are applied\"],\"src\":\"https:\/\/www.ontario.ca\/laws\/regulation\/030267\",\"srcLabel\":\"O. Reg. 267\/03, General (e-Laws consolidation from April 1, 2024)\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/canada\/#rule-ca-on-o-reg-267-03-nmp-soil-test\"},{\"id\":\"ca-on-omafa-soil-sampling-guidance\",\"c\":\"CA\",\"cn\":\"Canada\",\"place\":\"Ontario\",\"prog\":\"OMAFA soil sampling and analysis advice\",\"purpose\":\"Routine soil fertility sampling\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":10,\"max_ac\":null,\"area\":\"At most 10 ha (25 acres) per sample\",\"exc\":null,\"cores_min\":20,\"cores\":\"At least 20 cores, plus one per 0.4 ha (1 acre) in fields over 8 ha (20 acres)\",\"table\":null,\"landUses\":[],\"depth\":\"About 15 cm (6 inches) for nutrients, unchanged under no-till. Nitrate 30 cm (1 ft). Under no-till with surface-applied nitrogen, a separate 5 cm (2 inches) sample checks surface pH only, not nutrients.\",\"method\":\"Random cores on a zig-zag across uniform sampling areas. Precision, site specific or grid sampling allowed, not required.\",\"time\":[\"Repeat: Once every 3 years is adequate for most farms; more often on coarse soils or high potassium removal crops\"],\"src\":\"https:\/\/www.ontario.ca\/page\/soil-sampling-and-analysis-managing-crop-nutrients\",\"srcLabel\":\"Ontario.ca, Soil sampling and analysis: managing crop nutrients\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/canada\/#rule-ca-on-omafa-soil-sampling-guidance\"},{\"id\":\"dk-bek-655-2026-raised-phosphorus-ceiling\",\"c\":\"DK\",\"cn\":\"Denmark\",\"place\":\"Denmark\",\"prog\":\"Fertiliser use rules for farm businesses, raised phosphorus ceiling for low P numbers (planning period 2026\/2027)\",\"purpose\":\"Soil P numbers (Olsen P) to raise the phosphorus ceiling\",\"type\":\"Conditional\",\"guidance\":0,\"max_ha\":5,\"max_ac\":null,\"area\":\"At least one soil sample per started 5 ha of harmony area on JB 1 to 10, and at least one per field\",\"exc\":null,\"cores_min\":null,\"cores\":null,\"table\":null,\"landUses\":[],\"depth\":null,\"method\":null,\"time\":[\"Result valid: No more than 5 years old at the start of the planning period in which the ceiling is raised\",\"Season: The farm average uses the latest sampling on each field, taken by 31 July in the current planning period\"],\"src\":\"https:\/\/www.retsinformation.dk\/eli\/lta\/2026\/655\/pdf\",\"srcLabel\":\"BEK nr 655 af 08\/07\/2026, amending order (Lovtidende A, PDF)\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/denmark\/#rule-dk-bek-655-2026-raised-phosphorus-ceiling\"},{\"id\":\"ie-si-588-2025-soil-test\",\"c\":\"IE\",\"cn\":\"Ireland\",\"place\":\"Ireland\",\"prog\":\"Nitrates regulations, Good Agricultural Practice for Protection of Waters\",\"purpose\":\"Soil test for the phosphorus index\",\"type\":\"Conditional\",\"guidance\":0,\"max_ha\":4,\"max_ac\":null,\"area\":\"4 ha per sample. Up to 5 ha where soil types and cropping were similar for the previous five years.\",\"exc\":\"Up to 5 ha: soil types and cropping similar during the previous five years.\",\"cores_min\":20,\"cores\":\"20 cores per sample\",\"table\":null,\"landUses\":[],\"depth\":\"0 to 10 cm\",\"method\":\"The sampling pattern set out in Schedule 1. Separate samples where soil type, cropping history, slope, drainage or yields differ.\",\"time\":[\"Result valid: Under 4 years for P (Index 4 results excepted). 12 years for organic matter.\",\"Wait: P test: 3 months after the last P fertiliser, chemical or organic\",\"Wait: pH test: 2 years after ground limestone\"],\"src\":\"https:\/\/www.irishstatutebook.ie\/eli\/2025\/si\/588\/made\/en\/print\",\"srcLabel\":\"S.I. No. 588\/2025, Schedule 1 (as made)\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/ireland\/#rule-ie-si-588-2025-soil-test\"},{\"id\":\"ie-teagasc-soil-sampling-advice\",\"c\":\"IE\",\"cn\":\"Ireland\",\"place\":\"Ireland\",\"prog\":\"Teagasc sampling advice\",\"purpose\":\"Routine soil fertility sampling\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":4,\"max_ac\":null,\"area\":\"One sample every 2 to 4 ha\",\"exc\":null,\"cores_min\":20,\"cores\":\"At least 20 cores per sample\",\"table\":null,\"landUses\":[],\"depth\":\"0 to 10 cm\",\"method\":\"Divide fields by soil type, cropping history and known growth differences or previous performance.\",\"time\":[\"Result valid: Base fertiliser advice on tests for 4 to 5 years\",\"Season: September to March\",\"Wait: 3 to 6 months after P and K. 2 years after lime.\"],\"src\":\"https:\/\/teagasc.ie\/crops\/faq\/soil-sampling\/\",\"srcLabel\":\"Teagasc, Soil sampling FAQ\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/ireland\/#rule-ie-teagasc-soil-sampling-advice\"},{\"id\":\"it-pie-dpi-2026-soil-analysis\",\"c\":\"IT\",\"cn\":\"Italy\",\"place\":\"Piedmont (Piemonte)\",\"prog\":\"Integrated production standards (Disciplinari di produzione integrata 2026): CAP intervention SRA01 ACA1 and the national integrated production quality scheme (SQNPI)\",\"purpose\":\"Soil analysis for the fertilisation plan in integrated production\",\"type\":\"Conditional\",\"guidance\":0,\"max_ha\":1,\"max_ac\":null,\"area\":\"Generally one sample per 1 ha field, extended or reduced with the uniformity of soil and cropping. At least one per cropping system.\",\"exc\":null,\"cores_min\":null,\"cores\":null,\"table\":null,\"landUses\":[],\"depth\":\"Field crops about 30 cm, after removing the top 5 cm. Tree crops: advised to take topsoil (to about 30 cm) and subsoil (to about 60 cm) as separate samples.\",\"method\":\"Up to 20 sampling points by field size, along the diagonals or at random. More samples where agricultural landscape units differ in soil or management.\",\"time\":[\"Result valid: 5 years for variable parameters. No limit for texture, total carbonate and pH (unless the pH is corrected).\",\"Season: Field crops: the days after harvest\",\"Wait: Field crops: or at least 2 months after the last fertiliser\"],\"src\":\"https:\/\/www.regione.piemonte.it\/web\/sites\/default\/files\/media\/documenti\/2026-03\/dpi_2026_-_allegato_i_-_fertilizzazione.pdf\",\"srcLabel\":\"Regione Piemonte, DPI 2026, Allegato I Fertilizzazione (PDF)\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/italy\/#rule-it-pie-dpi-2026-soil-analysis\"},{\"id\":\"kz-agrochemical-survey-rules-2015\",\"c\":\"KZ\",\"cn\":\"Kazakhstan\",\"place\":\"Kazakhstan\",\"prog\":\"Agrochemical survey of soils (\u0430\u0433\u0440\u043e\u0445\u0438\u043c\u0438\u0447\u0435\u0441\u043a\u043e\u0435 \u043e\u0431\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u043d\u0438\u0435 \u043f\u043e\u0447\u0432) by the state agrochemical service\",\"purpose\":\"State agrochemical survey of arable land\",\"type\":\"Conditional\",\"guidance\":0,\"max_ha\":75,\"max_ac\":null,\"area\":\"One composite sample per elementary plot. Elementary plot at most 75 ha, or at most 10 ha on irrigated land.\",\"exc\":null,\"cores_min\":20,\"cores\":\"20 to 25 point samples per composite sample, on all soil types. Each composite sample weighs at least 500 g.\",\"table\":null,\"landUses\":[],\"depth\":\"Plough layer 0 to 20 cm, taking the humus horizon into account\",\"method\":\"A grid of elementary plots. On rainfed land the grid follows the soil cover and the position in the relief. Sampling density, set by the plot size, follows the variability of the soil cover and the fertiliser rates.\",\"time\":[\"Repeat: Rainfed land every 7 years. Irrigated land, and farms using chemical ameliorants, every 5 years. State variety plots and experimental farms every 3 years. Owners and land users may ask for shorter intervals.\",\"Season: Non-irrigated fields with low mineral fertiliser use: throughout the growing season\",\"Season: Irrigated land with systematic mineral fertiliser use of up to 90 kg\/ha of active ingredient: throughout the growing season\",\"Wait: Irrigated land with systematic mineral fertiliser use of more than 90 kg\/ha of active ingredient: in spring before fertilising, or 2 months or more after it\",\"Season: Flood irrigation or flooded rice checks: before flooding, or after the water is drained and the crop is harvested\"],\"src\":\"https:\/\/adilet.zan.kz\/rus\/docs\/V1500010686\",\"srcLabel\":\"Rules for the agrochemical survey of soils, Order No. 4-1\/147 (Adilet)\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/kazakhstan\/#rule-kz-agrochemical-survey-rules-2015\"},{\"id\":\"nl-fosfaatdifferentiatie-own-method\",\"c\":\"NL\",\"cn\":\"Netherlands\",\"place\":\"Netherlands\",\"prog\":\"Phosphate differentiation (fosfaatdifferentiatie), laboratory's own method\",\"purpose\":\"Phosphate class for the phosphate use norm\",\"type\":\"Conditional\",\"guidance\":0,\"max_ha\":5,\"max_ac\":null,\"area\":\"One composite per 5 ha at most. Adjoining parcels of up to 2.5 ha each may be combined up to 5 ha.\",\"exc\":null,\"cores_min\":40,\"cores\":\"At least 40 cores per composite\",\"table\":null,\"landUses\":[],\"depth\":\"Grassland 0 to 10 cm. Arable land 0 to 25 cm.\",\"method\":\"The accredited sampling organisation's own protocol, always based on the W, zig-zag or crosswise method.\",\"time\":[\"Result valid: 4 years from the sampling date\",\"Wait: At least 2 months after liming\"],\"src\":\"https:\/\/wetten.overheid.nl\/BWBR0018989\/\",\"srcLabel\":\"Uitvoeringsregeling Meststoffenwet, art. 103a and Bijlage L\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/netherlands\/#rule-nl-fosfaatdifferentiatie-own-method\"},{\"id\":\"nl-fosfaatdifferentiatie-stratified\",\"c\":\"NL\",\"cn\":\"Netherlands\",\"place\":\"Netherlands\",\"prog\":\"Phosphate differentiation (fosfaatdifferentiatie), stratified random sample\",\"purpose\":\"Phosphate class for the phosphate use norm\",\"type\":\"Conditional\",\"guidance\":0,\"max_ha\":20,\"max_ac\":null,\"area\":\"Sampling units of at most 20 ha. Parcels cannot be combined.\",\"exc\":null,\"cores_min\":null,\"cores\":\"By unit size: 1 to 5 ha 25 points; 5 to 10 ha 29 on grassland, 28 on arable; 10 to 20 ha 33 on grassland, 32 on arable.\",\"table\":[{\"from_ha\":1,\"to_ha\":5,\"grassland\":25,\"arable\":25},{\"from_ha\":5,\"to_ha\":10,\"grassland\":29,\"arable\":28},{\"from_ha\":10,\"to_ha\":20,\"grassland\":33,\"arable\":32}],\"landUses\":[\"grassland\",\"arable\"],\"depth\":\"Grassland 0 to 10 cm. Arable land 0 to 25 cm.\",\"method\":\"Stratified random sample: a computer splits the parcel into equal, compact blocks, one per sampling point, and picks one random point in each, located by GNSS.\",\"time\":[\"Result valid: 4 years from the sampling date\",\"Wait: At least 2 months after liming\"],\"src\":\"https:\/\/wetten.overheid.nl\/BWBR0018989\/\",\"srcLabel\":\"Uitvoeringsregeling Meststoffenwet, art. 103a and Bijlage L\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/netherlands\/#rule-nl-fosfaatdifferentiatie-stratified\"},{\"id\":\"pl-kschr-instrukcja-pobierania-probek-glebowych\",\"c\":\"PL\",\"cn\":\"Poland\",\"place\":\"Poland\",\"prog\":\"Chemical-agricultural station sampling instruction (SChR A 1)\",\"purpose\":\"Soil sampling for agrochemical analysis\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":4,\"max_ac\":null,\"area\":\"One composite sample for at most 4 ha of uniform soil and similar terrain, separately for each crop\",\"exc\":null,\"cores_min\":null,\"cores\":null,\"table\":null,\"landUses\":[],\"depth\":\"0 to 20 cm\",\"method\":\"Up to 20 primary samples along a set scheme, preferably at right angles to cultivation and fertilising passes. Not within 5 m of the field edge, on former stack or heap sites, in ditches, furrows, molehills or gravel patches, or in hollows and steep rises.\",\"time\":[\"Season: Spring or autumn, before fertiliser is spread\",\"Wait: Avoid sampling straight after mineral or organic fertiliser, and in excessive drought or wet soil\"],\"src\":\"https:\/\/www.schr.gov.pl\/index.php\/instrukcje\",\"srcLabel\":\"Krajowa Stacja Chemiczno-Rolnicza, Instrukcje (attachment SChR A 1, .doc)\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/poland\/#rule-pl-kschr-instrukcja-pobierania-probek-glebowych\"},{\"id\":\"ro-cod-bune-practici-studiu-agrochimic\",\"c\":\"RO\",\"cn\":\"Romania\",\"place\":\"Romania\",\"prog\":\"Code of Good Agricultural Practice (Codul de bune practici agricole), voluntary since 2021\",\"purpose\":\"Agrochemical soil study: frequency, area and depth\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":5,\"max_ac\":null,\"area\":\"Arable land 2 to 5 ha per composite sample; at most 5 ha per sample in the general recommendation. Grassland and hay meadows 5 to 10 ha; irrigated land 0.25 to 2 ha; orchards and vineyards 0.5 to 2 ha; eroded land at most 2 ha.\",\"exc\":\"Up to 10 ha: permanent grassland and hay meadows: 5 to 10 ha per sample.\",\"cores_min\":null,\"cores\":null,\"table\":null,\"landUses\":[],\"depth\":\"Arable 0 to 20 cm. Grassland and hay meadows 0 to 10 cm. Orchards and vineyards 0 to 20 and 20 to 40 cm.\",\"method\":\"Composite samples from uniform areas; never mix organically fertilised and unfertilised areas, or different crops, in one sample. Results drawn up as maps (cartograms) of pH, P and K.\",\"time\":[\"Repeat: Soil analyses at least every 4 years. Study every 4 to 5 years for rainfed field crops, 2 to 3 years for irrigated crops.\"],\"src\":\"https:\/\/mmediu.ro\/app\/webroot\/uploads\/files\/CBPA-integral-1.pdf\",\"srcLabel\":\"Ministry of Environment, Water and Forests, Codul de bune practici agricole (PDF), chapter 6 and Annex 11\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/romania\/#rule-ro-cod-bune-practici-studiu-agrochimic\"},{\"id\":\"gb-nir-nap-2019-derogation-soil-analysis\",\"c\":\"GB\",\"cn\":\"United Kingdom\",\"place\":\"Northern Ireland\",\"prog\":\"Nutrients Action Programme (NAP), grassland derogation\",\"purpose\":\"Soil analysis for nitrogen and phosphorus on derogated grassland\",\"type\":\"Conditional\",\"guidance\":0,\"max_ha\":4,\"max_ac\":null,\"area\":\"At least one analysis per 4 ha\",\"exc\":null,\"cores_min\":null,\"cores\":null,\"table\":null,\"landUses\":[],\"depth\":null,\"method\":null,\"time\":[\"Repeat: At least every 4 years for each homogeneous area of grassland\"],\"src\":\"https:\/\/www.legislation.gov.uk\/nisr\/2019\/81\/schedule\/8\",\"srcLabel\":\"S.R. 2019\/81, Schedule 8, Conditions applying in relation to a Derogation\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-kingdom\/#rule-gb-nir-nap-2019-derogation-soil-analysis\"},{\"id\":\"gb-nir-nap-2019-schedule-5-phosphorus\",\"c\":\"GB\",\"cn\":\"United Kingdom\",\"place\":\"Northern Ireland\",\"prog\":\"Nutrients Action Programme (NAP)\",\"purpose\":\"Soil test for the phosphorus index\",\"type\":\"Conditional\",\"guidance\":0,\"max_ha\":4,\"max_ac\":null,\"area\":\"Not more than 4 ha per sample. Generally one sample per field; areas that differ in growth, cropping or fertilising are sampled separately.\",\"exc\":null,\"cores_min\":25,\"cores\":\"At least 25 sub-samples per sample\",\"table\":null,\"landUses\":[],\"depth\":\"Grassland 0 to 7.5 cm. Arable land 0 to 15 cm.\",\"method\":\"Sub-samples taken at regular intervals along a W pattern, evenly spread over the whole area. Avoid headlands, dung and urine patches and where stock gather.\",\"time\":[\"Repeat: Every fourth year is satisfactory as a basis for phosphorus fertiliser recommendations\",\"Wait: At least 3 months after the last fertiliser containing phosphorus, organic or chemical\"],\"src\":\"https:\/\/www.legislation.gov.uk\/nisr\/2019\/81\/schedule\/5\",\"srcLabel\":\"S.R. 2019\/81, Schedule 5, Soil test for Phosphorus\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-kingdom\/#rule-gb-nir-nap-2019-schedule-5-phosphorus\"},{\"id\":\"gb-nir-daera-soil-sampling-advice\",\"c\":\"GB\",\"cn\":\"United Kingdom\",\"place\":\"Northern Ireland\",\"prog\":\"DAERA soil sampling advice\",\"purpose\":\"Routine soil fertility sampling\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":4,\"max_ac\":null,\"area\":\"One sample for up to 4 ha, in one or more fields of similar soil type and management\",\"exc\":null,\"cores_min\":20,\"cores\":\"20 to 25 cores per sample\",\"table\":null,\"landUses\":[],\"depth\":null,\"method\":null,\"time\":[\"Season: October to February\",\"Wait: 3 months after organic manure, lime or bagged fertiliser\"],\"src\":\"https:\/\/www.daera-ni.gov.uk\/news\/new-requirements-soil-sampling\",\"srcLabel\":\"DAERA, New requirements for soil sampling\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-kingdom\/#rule-gb-nir-daera-soil-sampling-advice\"},{\"id\":\"gb-sct-easr-sch-18-waste-to-land-soil-sampling\",\"c\":\"GB\",\"cn\":\"United Kingdom\",\"place\":\"Scotland\",\"prog\":\"Environmental Authorisations (Scotland): recovery of waste by application to land for soil improvement\",\"purpose\":\"Soil testing before and during waste application to land\",\"type\":\"Conditional\",\"guidance\":0,\"max_ha\":5,\"max_ac\":null,\"area\":\"One representative sample per unit of land of not more than 5 ha\",\"exc\":null,\"cores_min\":25,\"cores\":\"25 cores per sample\",\"table\":null,\"landUses\":[],\"depth\":\"Depth of the topsoil or 15 cm, whichever is deeper\",\"method\":\"Representative sample per unit. Sampling, handling and testing follow SEPA technical guidance.\",\"time\":[\"Result valid: Full analysis no more than 1 year before the first application to that land\",\"Repeat: For later applications, at the Table 2 frequencies: every 5 years for pH, extractable P, K and Mg (if claimed), texture and any element that earlier exceeded 90 percent of its limit; every 10 years for total carbon or organic matter and the metals\"],\"src\":\"https:\/\/www.legislation.gov.uk\/ssi\/2018\/219\/schedule\/18\",\"srcLabel\":\"S.S.I. 2018\/219, Schedule 18 (revised)\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-kingdom\/#rule-gb-sct-easr-sch-18-waste-to-land-soil-sampling\"},{\"id\":\"gb-sct-nvz-derogation-soil-sampling\",\"c\":\"GB\",\"cn\":\"United Kingdom\",\"place\":\"Scotland\",\"prog\":\"Action Programme for Nitrate Vulnerable Zones, grassland derogation\",\"purpose\":\"Nitrogen and phosphate soil sampling on derogated grassland\",\"type\":\"Conditional\",\"guidance\":0,\"max_ha\":5,\"max_ac\":null,\"area\":\"At least one sampling and analysis for every 5 ha of the farm that can reasonably be considered homogeneous\",\"exc\":null,\"cores_min\":null,\"cores\":null,\"table\":null,\"landUses\":[],\"depth\":null,\"method\":null,\"time\":[\"Repeat: At least once every 4 years\"],\"src\":\"https:\/\/www.legislation.gov.uk\/ssi\/2008\/298\",\"srcLabel\":\"S.S.I. 2008\/298 (revised), regulations 14 and 14B\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-kingdom\/#rule-gb-sct-nvz-derogation-soil-sampling\"},{\"id\":\"us-al-extension-precision-soil-sampling\",\"c\":\"US\",\"cn\":\"United States\",\"place\":\"Alabama\",\"prog\":\"Alabama Cooperative Extension System, precision soil sampling advice\",\"purpose\":\"Grid and zone sampling for lime and fertilizer\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":1.0117141055999999,\"max_ac\":2.5,\"area\":\"Grids of 2.5 acres or less. Up to 5 acres in relatively uniform fields. Zones of 10 acres or less.\",\"exc\":\"Up to 5 acres: relatively uniform fields, to reduce labor and sampling costs.\",\"cores_min\":8,\"cores\":\"Eight to twelve cores per grid or zone sample. At least ten to fifteen for zones of 10 acres or less, more for larger zones.\",\"table\":null,\"landUses\":[],\"depth\":null,\"method\":\"Grid sampling to set a baseline in new or problem fields, then management zones. Hand sampling: cores in a circle around the grid center. Automated samplers: an S pattern through the grid. A zigzag through each zone.\",\"time\":[\"Repeat: Grid sampling every 4 to 5 years, with zone sampling in between\"],\"src\":\"https:\/\/www.aces.edu\/blog\/topics\/crop-production\/precision-soil-sampling-strategies-for-site-specific-nutrient-management\/\",\"srcLabel\":\"ACES ANR-3181, Precision Soil Sampling Strategies for Site-Specific Nutrient Management\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-al-extension-precision-soil-sampling\"},{\"id\":\"us-az-extension-soil-sampling\",\"c\":\"US\",\"cn\":\"United States\",\"place\":\"Arizona\",\"prog\":\"University of Arizona Cooperative Extension, soil sampling guide\",\"purpose\":\"Soil sampling for commercial crop production\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":8.093712844799999,\"max_ac\":20,\"area\":\"Whole field sampling: one composite sample per 15 to 20 acres\",\"exc\":null,\"cores_min\":15,\"cores\":\"15 to 20 cores or scoops per site, depending on field size and the laboratory\",\"table\":null,\"landUses\":[],\"depth\":\"12 inches for vegetables such as lettuce, spinach, broccoli, celery or cantaloupes. 24 inches for cotton, alfalfa, corn or wheat. Tilled soils to tillage depth.\",\"method\":\"Whole field: random cores in a zigzag across the field. Grid: composites per grid cell or points at grid intersections. Zone: separate composites where variation is already known.\",\"time\":[\"Repeat: Regularly, if not every season, before planting each crop\"],\"src\":\"https:\/\/extension.arizona.edu\/sites\/default\/files\/2025-09\/az2147-a-guide-to-effective-soil-sampling-for-sustainable-crop-production.pdf\",\"srcLabel\":\"University of Arizona Cooperative Extension AZ2147 (PDF)\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-az-extension-soil-sampling\"},{\"id\":\"us-ct-uconn-soil-sampling-instructions\",\"c\":\"US\",\"cn\":\"United States\",\"place\":\"Connecticut\",\"prog\":\"University of Connecticut Soil Nutrient Analysis Laboratory, soil nutrient sampling instructions\",\"purpose\":\"Routine soil fertility sampling\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":6.0702846336,\"max_ac\":15,\"area\":\"No sample may represent more than 15 acres\",\"exc\":null,\"cores_min\":12,\"cores\":\"12 or more cores or slices per sample\",\"table\":null,\"landUses\":[],\"depth\":\"Crop field 6 to 8 inches or the plough layer depth. Grass 3 to 4 inches.\",\"method\":\"12 or more random, evenly distributed spots. Separate samples for areas that differ in topography, drainage, texture, crop growth or use, soil color, or fertilizer history.\",\"time\":[\"Season: Any time the ground is not frozen. Fall is highly recommended.\"],\"src\":\"https:\/\/plantsoilcenter.cahnr.uconn.edu\/sampling-instructions\/\",\"srcLabel\":\"UConn Plant and Soil Health Center, Sampling Instructions\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-ct-uconn-soil-sampling-instructions\"},{\"id\":\"us-de-dda-practice-standard-soil-sampling\",\"c\":\"US\",\"cn\":\"United States\",\"place\":\"Delaware\",\"prog\":\"Delaware Nutrient Management Program, Delaware Conservation Practice Standard: Soil Sampling and Analysis\",\"purpose\":\"Soil sampling and analysis for nutrient management plans\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":16.187425689599998,\"max_ac\":40,\"area\":\"No more than 40 acres per sample\",\"exc\":null,\"cores_min\":15,\"cores\":\"A minimum of 15 to 25 cores per sample\",\"table\":null,\"landUses\":[],\"depth\":\"Approximately 8 inches\",\"method\":\"Smaller areas that differ in color, texture, drainage class, management or productivity are sampled separately.\",\"time\":[],\"src\":\"https:\/\/agriculture.delaware.gov\/wp-content\/uploads\/sites\/108\/2017\/12\/Soil-Sampling-and-Analysis.pdf\",\"srcLabel\":\"Delaware Department of Agriculture, Practice Standard Soil Sampling and Analysis (PDF)\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-de-dda-practice-standard-soil-sampling\"},{\"id\":\"us-de-extension-commercial-soil-sampling\",\"c\":\"US\",\"cn\":\"United States\",\"place\":\"Delaware\",\"prog\":\"University of Delaware Cooperative Extension, Delaware Soil Testing Program\",\"purpose\":\"Soil sampling for commercial crop production\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":16.187425689599998,\"max_ac\":40,\"area\":\"In general, 40 acres at most per sample\",\"exc\":null,\"cores_min\":15,\"cores\":\"15 to 25 cores per sample\",\"table\":null,\"landUses\":[],\"depth\":\"Plow depth, usually 6 to 9 inches. No-till and reduced tillage also 6 to 9 inches.\",\"method\":\"One soil type or condition per sample. Separate samples for different soils or management histories. Avoid wet spots, dead furrows, stockpile sites and old fertilizer bands.\",\"time\":[\"Repeat: Annual crops: every year, or every 2 to 3 years where fertility is very high\",\"Repeat: Perennial crops such as alfalfa or pasture: before seeding, then at least every 3 years\"],\"src\":\"https:\/\/www.udel.edu\/academics\/colleges\/canr\/cooperative-extension\/environmental-stewardship\/soil-testing\/general-information\/\",\"srcLabel\":\"University of Delaware Soil Testing Program, General Information\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-de-extension-commercial-soil-sampling\"},{\"id\":\"us-fl-ifas-soil-sampling\",\"c\":\"US\",\"cn\":\"United States\",\"place\":\"Florida\",\"prog\":\"UF\/IFAS Extension Soil Testing Laboratory, sampling advice\",\"purpose\":\"Routine soil fertility sampling\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":16.187425689599998,\"max_ac\":40,\"area\":\"Up to 40 acres of a field section in commercial agriculture, uniform in management and topography\",\"exc\":null,\"cores_min\":8,\"cores\":\"8 to 15 locations per composite sample\",\"table\":null,\"landUses\":[],\"depth\":\"Top 6 inches for most agronomic uses\",\"method\":\"One composite per area uniform in management and topography. Separate samples for areas that differ.\",\"time\":[\"Repeat: Soil pH at least once a year, if not every growing season\"],\"src\":\"https:\/\/ask.ifas.ufl.edu\/publication\/SS763\",\"srcLabel\":\"UF\/IFAS Extension SL547\/SS763\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-fl-ifas-soil-sampling\"},{\"id\":\"us-ga-uga-soil-test-handbook-sampling\",\"c\":\"US\",\"cn\":\"United States\",\"place\":\"Georgia\",\"prog\":\"University of Georgia Cooperative Extension, Soil Test Handbook for Georgia\",\"purpose\":\"Routine soil fertility sampling\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":6.0702846336,\"max_ac\":15,\"area\":\"Most fields 5 to not more than 15 acres per sample. Smaller areas where soil, slope, drainage or management differ.\",\"exc\":null,\"cores_min\":10,\"cores\":\"A minimum of 10 to 20 cores per composite. Earlier sampling studies found 20 cores needed for a 20-acre field, 15 for 10 acres and 10 for 5 acres.\",\"table\":null,\"landUses\":[],\"depth\":\"Plowed fields to plow depth (recommendations based on 6 inches for fertilizer, 8 inches for lime). Pastures and no-till 4 inches.\",\"method\":\"Cores at random over the area. Precision methods sample field subsections by soil type, topography, or crop growth or yield maps.\",\"time\":[\"Repeat: Every 2 to 3 years in most situations. Every year for high-value cash crops, fields testing high in P and K with none applied, or over 150 lb N per acre a year.\",\"Season: One to six months before planting, at the same time each year\"],\"src\":\"https:\/\/fieldreport.caes.uga.edu\/wp-content\/uploads\/2025\/08\/SB-62_2.pdf\",\"srcLabel\":\"UGA Cooperative Extension, Soil Test Handbook for Georgia (PDF)\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-ga-uga-soil-test-handbook-sampling\"},{\"id\":\"us-hi-ctahr-soil-sampling\",\"c\":\"US\",\"cn\":\"United States\",\"place\":\"Hawaii\",\"prog\":\"University of Hawaii CTAHR, guide to soil testing\",\"purpose\":\"Routine soil fertility sampling\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":2.0234282111999997,\"max_ac\":5,\"area\":\"Larger areas such as pastures or orchards: uniform soil-test areas of 1 to 5 acres each\",\"exc\":null,\"cores_min\":10,\"cores\":\"10 to 15 subsamples per composite sample\",\"table\":null,\"landUses\":[],\"depth\":\"4 inches for no-till fields and established pasture. 8 inches for conventionally tilled fields. Tree crops 0 to 8 inches plus a subsoil sample from 8 to 24 inches.\",\"method\":\"Map the area into uniform test areas; separate samples for different slope, soil color, drainage, texture or cropping history. Cores taken at random, for example in a zigzag.\",\"time\":[\"Repeat: At least once every 2 years\",\"Season: Two to three months before planting\"],\"src\":\"https:\/\/www3.ctahr.hawaii.edu\/TPSS\/research_extension\/rxsoil\/soilsample.htm\",\"srcLabel\":\"UH CTAHR, A Guide To Soil Testing For Hawaii's Residents\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-hi-ctahr-soil-sampling\"},{\"id\":\"us-il-extension-soil-sampling\",\"c\":\"US\",\"cn\":\"United States\",\"place\":\"Illinois\",\"prog\":\"University of Illinois Extension, soil sampling advice (from the Illinois Agronomy Handbook, Chapter 8)\",\"purpose\":\"Soil sampling for pH, phosphorus and potassium\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":1.0117141055999999,\"max_ac\":2.5,\"area\":\"Uniform applications: one composite per 2.5 acres. Site-specific: one per 1.1 acres. Zones seldom over 10 acres.\",\"exc\":null,\"cores_min\":10,\"cores\":\"10 to 15 cores per composite, 15 to 20 for better representation. Grid points: five cores within a 10-foot radius.\",\"table\":null,\"landUses\":[],\"depth\":\"7 inches, the depth the Illinois recommendations are calibrated to\",\"method\":\"Grid points, five cores within a 10-foot radius of each point; or zones from yield maps, canopy data, soil type and history. Sample the same points each time, located by GPS or measuring wheel.\",\"time\":[\"Repeat: Every 2 to 4 years when soils are at optimum fertility\",\"Season: After harvest in the fall is ideal; same time of year each time\",\"Wait: Avoid sampling within a few months after lime or fertilizer\"],\"src\":\"https:\/\/extension.illinois.edu\/crops\/soil-sampling\",\"srcLabel\":\"University of Illinois Extension, Soil Sampling\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-il-extension-soil-sampling\"},{\"id\":\"us-in-327-iac-19-cfo-soil-test\",\"c\":\"US\",\"cn\":\"United States\",\"place\":\"Indiana\",\"prog\":\"IDEM guidance on the Confined Feeding Operation (CFO) rule, 327 IAC 19, manure management plan\",\"purpose\":\"Soil phosphorus test for manure application rates\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":8.093712844799999,\"max_ac\":20,\"area\":\"IDEM: each soil test may represent no more than 20 acres (8.0937 ha)\",\"exc\":null,\"cores_min\":12,\"cores\":\"IDEM: 12 to 15 plugs recommended for a composite from a 20 acre area\",\"table\":null,\"landUses\":[],\"depth\":null,\"method\":\"IDEM: composite samples, or averaged results, within areas of up to 20 acres, with the procedure set out in the manure management plan. Grid sampling is good practice, not required.\",\"time\":[\"Result valid: IDEM: the soil test used for a field's manure rate must be no more than 4 years old on the date manure is applied there. A different frequency may be approved in the manure management plan.\"],\"src\":\"https:\/\/www.in.gov\/idem\/cfo\/files\/guidance_manual_cfp.pdf\",\"srcLabel\":\"IDEM, Guidance Manual for Indiana's Confined Feeding Program (PDF)\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-in-327-iac-19-cfo-soil-test\"},{\"id\":\"us-in-purdue-extension-soil-sampling\",\"c\":\"US\",\"cn\":\"United States\",\"place\":\"Indiana\",\"prog\":\"Purdue Extension soil sampling guidelines\",\"purpose\":\"Routine soil fertility sampling\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":8.093712844799999,\"max_ac\":20,\"area\":\"Whole field: at least one composite per 20 acres. Grid cells 1 to 5 acres, 2.5 acres or less works best. Zones usually 2 to 10 acres.\",\"exc\":null,\"cores_min\":10,\"cores\":\"10 to 20 subsamples per composite. Zones: two per acre, at least five. Grids: at least five for a 1 acre cell, 8 to 10 for 2.5 to 5 acre cells.\",\"table\":null,\"landUses\":[],\"depth\":\"Conventional tillage: 0 to 8 inches. Conservation tillage: separate 0 to 4 inch sample for pH and lime, 0 to 8 inches for fertility.\",\"method\":\"Zig-zag pattern for whole-field sampling. Grid or zone sampling for variable-rate maps; zone sampling preferred over grid.\",\"time\":[\"Repeat: Once every four years in most soils. Every two years on sandy or highly managed soils (irrigated, silage or hay fields).\",\"Season: When no crop is standing: spring before planting or fall after harvest, before fertilizer or lime. Keep the same season each time.\"],\"src\":\"https:\/\/www.extension.purdue.edu\/extmedia\/AY\/AY-368-W.pdf\",\"srcLabel\":\"Purdue Extension AY-368-W, Soil Sampling Guidelines (PDF)\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-in-purdue-extension-soil-sampling\"},{\"id\":\"us-ia-567-65-mmp-soil-sampling\",\"c\":\"US\",\"cn\":\"United States\",\"place\":\"Iowa\",\"prog\":\"Iowa DNR manure management plans (MMP) for confinement feeding operations\",\"purpose\":\"Soil phosphorus and pH tests for the phosphorus index\",\"type\":\"Conditional\",\"guidance\":0,\"max_ha\":4.046856422399999,\"max_ac\":10,\"area\":\"No more than 10 acres per sample. One sample for a field of 15 acres or less. Up to 20 acres for the next sampling where manure went on at phosphorus-based rates.\",\"exc\":\"Up to 20 acres: manure applied at phosphorus-based rates within the sampling period: up to 20 acres for the next required sampling.\",\"cores_min\":10,\"cores\":\"At least 10 cores per composite sample\",\"table\":null,\"landUses\":[],\"depth\":\"0 to 6 inches\",\"method\":\"Grid, management zone or soil type sampling, among others. Procedural details may be taken from ISU Extension CROP 31-8 (published as CROP 3108), NCR-13 Report 348 or other credible soil sampling publications.\",\"time\":[\"Result valid: Soil samples must be four years old or less\",\"Repeat: A complete plan with new soil sampling for each field at least once every four years\"],\"src\":\"https:\/\/www.legis.iowa.gov\/docs\/iac\/chapter\/567.65.pdf\",\"srcLabel\":\"Iowa Administrative Code 567, Chapter 65 (PDF, IAC 8\/6\/25)\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-ia-567-65-mmp-soil-sampling\"},{\"id\":\"us-ia-extension-soil-sampling\",\"c\":\"US\",\"cn\":\"United States\",\"place\":\"Iowa\",\"prog\":\"Iowa State University Extension and Outreach soil sampling advice\",\"purpose\":\"Routine soil fertility sampling\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":1.0117141055999999,\"max_ac\":2.5,\"area\":\"Grid: a suggested minimum of one sample per 2.5 acres. Beyond that, zone sampling is likely more effective. Otherwise one sample per uniform area.\",\"exc\":null,\"cores_min\":10,\"cores\":\"At least 10 to 12 cores per sample. 15 to 20 for a better average. At least 20 with recent banded fertilizer or manure.\",\"table\":null,\"landUses\":[],\"depth\":\"P, K, Zn and organic matter: 0 to 6 inches in all tillage systems. pH: 0 to 6 inches with tillage, top 2 to 3 inches in no-till and in hay or pasture.\",\"method\":\"Soil map unit or management zone sampling, or grid sampling. Cores in a random zigzag pattern across each area; grid points cover an area at least 50 feet across.\",\"time\":[\"Repeat: Every 2 to 4 years for most crops, or once in a crop rotation, in the same crop each time\",\"Season: Ideally after harvest and before fertilization. Not shortly after lime, fertilizer or manure. Avoid winter and frozen soil.\"],\"src\":\"https:\/\/www.iowadnr.gov\/media\/6194\/download\",\"srcLabel\":\"ISU Extension and Outreach CROP 3108 (PDF, copy hosted by Iowa DNR)\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-ia-extension-soil-sampling\"},{\"id\":\"us-ky-extension-soil-sampling\",\"c\":\"US\",\"cn\":\"United States\",\"place\":\"Kentucky\",\"prog\":\"University of Kentucky Cooperative Extension soil sampling advice\",\"purpose\":\"Routine soil fertility sampling\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":8.093712844799999,\"max_ac\":20,\"area\":\"No more than 20 acres per sample, except where soils, past management and cropping history are quite uniform. Grid cells: 2.5 acres is the industry standard.\",\"exc\":null,\"cores_min\":10,\"cores\":\"At least 10 cores for small areas, up to 30 for larger fields. At least 10 across each grid cell.\",\"table\":null,\"landUses\":[],\"depth\":\"Tilled areas: depth of tillage, usually 6 to 8 inches. Pastures, no-till and minimum-till: 3 to 4 inches.\",\"method\":\"Sample smaller areas by soil type, cropping history, erosion or past management; yield maps help. Grid sampling: treat each cell as a field.\",\"time\":[\"Repeat: Most fields every three to four years. Every year for high-value crops (tobacco, commercial horticulture, alfalfa, red clover, corn silage) and for manured fields.\",\"Season: Fall (September to December) or spring (February to April), at the same time of year each time\"],\"src\":\"https:\/\/publications.mgcafe.uky.edu\/sites\/publications.ca.uky.edu\/files\/AGR-16-Taking-Soil-Test-Samples--Remediated.pdf\",\"srcLabel\":\"UK Cooperative Extension AGR-16, Taking Soil Test Samples (PDF)\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-ky-extension-soil-sampling\"},{\"id\":\"us-la-lsu-agcenter-soil-sampling\",\"c\":\"US\",\"cn\":\"United States\",\"place\":\"Louisiana\",\"prog\":\"LSU AgCenter soil sampling, testing and test interpretation advice\",\"purpose\":\"Routine soil fertility sampling\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":4.046856422399999,\"max_ac\":10,\"area\":\"Zone sampling: one composite per 10 acres. Grid sampling: one composite per 2.5 acres; start new fields at 1 acre.\",\"exc\":null,\"cores_min\":12,\"cores\":\"12 to 15 subsamples per composite: one to two per acre for zones, five to six per acre for grids. More where fertilizer was banded or manure spread.\",\"table\":null,\"landUses\":[],\"depth\":\"0 to 6 inches\",\"method\":\"Zone or grid sampling, subsamples in a zigzag pattern within each zone or grid cell. In furrow-irrigated fields, sample the bed top 4 to 6 inches from the row.\",\"time\":[\"Repeat: At least once every two to three years, or once per complete crop rotation\",\"Season: At the same time each year\"],\"src\":\"https:\/\/www.lsuagcenter.com\/~\/media\/system\/4\/b\/a\/d\/4bad81ca0f97f86899ddacee691317fb\/p3934%20soil%20sampling%20recommendation_ag724pdf.pdf\",\"srcLabel\":\"LSU AgCenter P3934, Soil Sampling, Testing and Test Interpretation (PDF)\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-la-lsu-agcenter-soil-sampling\"},{\"id\":\"us-me-umaine-soil-sampling\",\"c\":\"US\",\"cn\":\"United States\",\"place\":\"Maine\",\"prog\":\"University of Maine soil sampling instructions and Cooperative Extension advice\",\"purpose\":\"Routine soil fertility sampling\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":3.23748513792,\"max_ac\":8,\"area\":\"Up to 8 acres per sample where past treatment and soil type are uniform. Separate samples for low spots, trouble spots, different soils and differently treated areas.\",\"exc\":null,\"cores_min\":15,\"cores\":\"About 15 spots per sample area\",\"table\":null,\"landUses\":[],\"depth\":\"Row crops or new seedings: plow depth, about 8 inches. Sod (hayfields, lawns): 3 to 4 inches. Tree crops: 12 inches.\",\"method\":\"Uniform sampling areas; keep a permanent field sampling map.\",\"time\":[\"Repeat: At least once every three years; more often for problem areas or heavy nutrient use\",\"Season: Early spring after the frost is out, or fall before the ground freezes\"],\"src\":\"https:\/\/umaine.edu\/soiltestinglab\/wp-content\/uploads\/sites\/227\/2018\/07\/Soil-Info-Form-2018.pdf\",\"srcLabel\":\"Maine Soil Testing Service, Field and Soil Sample Information form, sampling instructions (PDF)\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-me-umaine-soil-sampling\"},{\"id\":\"us-mo-dnr-cafo-nutrient-management-standard\",\"c\":\"US\",\"cn\":\"United States\",\"place\":\"Missouri\",\"prog\":\"Missouri DNR CAFO Nutrient Management Technical Standard\",\"purpose\":\"Current soil test results for CAFO manure application\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":8.093712844799999,\"max_ac\":20,\"area\":\"Approximately 20 acres or less per sample. Grid alternative: cells under 3 acres.\",\"exc\":null,\"cores_min\":15,\"cores\":\"At least 15 representative cores per sample, more on pastures or where phosphorus was banded. Grid: at least 10 cores within 15 feet of the grid point.\",\"table\":null,\"landUses\":[],\"depth\":\"6 to 8 inches\",\"method\":\"Per MU Guides G9215 (pastures) and G9217 (row and hay crops). Georeferenced grid sampling is an alternative.\",\"time\":[\"Result valid: Re-sample before manure application when the soil test is more than five years old, or the phosphate surplus since the last test exceeds 500 lb\/acre\"],\"src\":\"https:\/\/nmplanner.missouri.edu\/wp-content\/plugins\/nm-planner-functionality\/public\/assets\/pdfs\/Nutrient_Management_Tech_Standard-FINAL_3-4-09_Marked_NM-A.pdf\",\"srcLabel\":\"Missouri DNR CAFO Nutrient Management Technical Standard, March 4, 2009 (PDF, copy in the MU CAFO operator curriculum)\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-mo-dnr-cafo-nutrient-management-standard\"},{\"id\":\"us-mo-extension-soil-sampling\",\"c\":\"US\",\"cn\":\"United States\",\"place\":\"Missouri\",\"prog\":\"University of Missouri Extension soil sampling advice\",\"purpose\":\"Routine soil fertility sampling, hayfields and row crops\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":8.093712844799999,\"max_ac\":20,\"area\":\"Sampling areas typically no more than 20 acres. Grid sampling: typically one sample per 2.5 acres or less.\",\"exc\":null,\"cores_min\":10,\"cores\":\"10 to 20 cores. 15 to 20 with manure, banded fertilizer or other variation; 10 to 15 on uniform, broadcast-fertilized fields. 30 cores in a set pattern where injection bands are known.\",\"table\":null,\"landUses\":[],\"depth\":\"6 to 7 inches for most objectives. Long-term no-till: a separate 0 to 2 inch sample for surface pH.\",\"method\":\"Divide fields into areas expected to be similar or managed alike; zigzag across the whole area. Grid sampling for variable rate, high-value fields or unknown history.\",\"time\":[\"Repeat: Every three to five years, at the same time of year as the last sample\",\"Season: When the field is idle: fall and winter after harvest for forages and spring crops; summer for winter wheat and fall-seeded crops\",\"Wait: At least three months after phosphorus fertilizer, lime or manure\"],\"src\":\"https:\/\/nmplanner.missouri.edu\/wp-content\/plugins\/nm-planner-functionality\/public\/assets\/pdfs\/g09217_Marked_NM-B.pdf\",\"srcLabel\":\"MU Extension G9217, Soil Sampling Hayfields and Row Crops (PDF, CAFO operator curriculum copy)\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-mo-extension-soil-sampling\"},{\"id\":\"us-ne-extension-soil-sampling\",\"c\":\"US\",\"cn\":\"United States\",\"place\":\"Nebraska\",\"prog\":\"Nebraska Extension sampling advice\",\"purpose\":\"Routine soil fertility sampling\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":16.187425689599998,\"max_ac\":40,\"area\":\"Fields or areas within fields no larger than 40 acres (16.19 ha)\",\"exc\":null,\"cores_min\":10,\"cores\":\"10 to 15 random surface cores per 40-acre area. Six to eight subsoil cores for nitrate.\",\"table\":null,\"landUses\":[],\"depth\":\"0 to 8 inches (0 to 20.32 cm) for pH, lime need, organic matter, P, K, S and Zn. Nitrate: subsurface cores to 3 feet (91.44 cm), 2 feet (60.96 cm) at minimum.\",\"method\":\"Random cores within representative areas for a uniform rate. Management zones or a grid with known sample locations for variable rate.\",\"time\":[\"Season: Late fall or early winter, except for nitrate testing on coarse-textured soils. Where nitrate may have leached over winter or spring, spring sampling before planting is the preferred option.\"],\"src\":\"https:\/\/extensionpubs.unl.edu\/publication\/g1740\/na\/html\/view\",\"srcLabel\":\"Nebraska Extension, G1740 Guidelines for Soil Sampling\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-ne-extension-soil-sampling\"},{\"id\":\"us-nm-extension-soil-sampling\",\"c\":\"US\",\"cn\":\"United States\",\"place\":\"New Mexico\",\"prog\":\"NMSU Cooperative Extension sampling advice\",\"purpose\":\"Routine soil fertility sampling\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":10.117141056,\"max_ac\":25,\"area\":\"Divide crop fields larger than 25 acres (10.12 ha) into separate sampling sections\",\"exc\":null,\"cores_min\":10,\"cores\":\"10 to 15 subsamples from the same depth per sample\",\"table\":null,\"landUses\":[],\"depth\":\"Untilled ground (direct-seeded fields, orchards, vineyards): 6 to 8 inches (15.24 to 20.32 cm). Tilled fields: 12 inches (30.48 cm).\",\"method\":\"One sample per management zone: an area treated the same for water, fertilizer and yield potential. Divide by yield history, slope, weed pressure and soil type.\",\"time\":[\"Repeat: Every year before the crop season; at least every other year\"],\"src\":\"https:\/\/pubs.nmsu.edu\/_a\/A146\/\",\"srcLabel\":\"NMSU Guide A-146, Recommended Analyses for New Mexico Soils\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-nm-extension-soil-sampling\"},{\"id\":\"us-ny-extension-soil-sampling\",\"c\":\"US\",\"cn\":\"United States\",\"place\":\"New York\",\"prog\":\"Cornell Nutrient Management Spear Program, Agronomy Fact Sheet Series\",\"purpose\":\"Soil sampling for field crops\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":6.0702846336,\"max_ac\":15,\"area\":\"Generally 15 acres (6.07 ha) or less per sample. Grid cells often 0.5 to about 6 acres.\",\"exc\":null,\"cores_min\":10,\"cores\":\"About two cores per acre (field acres times 2), at least 10 to 15 on smaller fields. Grid cells and zones: an average of two cores per acre.\",\"table\":null,\"landUses\":[],\"depth\":\"Conventional tillage 0 to 8 inches (0 to 20.32 cm). Pasture 0 to 6 inches (0 to 15.24 cm). No-till or minimum till: 0 to 1 inch (0 to 2.54 cm) for pH and 0 to 6 inches (0 to 15.24 cm) for nutrients.\",\"method\":\"Zigzag across the field when one sample represents the whole field. Grid sampling for larger fields and zone management; grid results can define management zones that are sampled from then on.\",\"time\":[\"Repeat: At least once every 2 to 3 years\",\"Season: Best in fall after harvest of the main crop; spring or summer also possible. Sample around the same month each year.\",\"Wait: 5 to 6 weeks after fertilizer or manure, or sod termination, for pH, general fertility and the soil nitrogen test\"],\"src\":\"https:\/\/nmsp.cals.cornell.edu\/publications\/factsheets\/factsheet1.pdf\",\"srcLabel\":\"Cornell Agronomy Fact Sheet #1, Soil Sampling for Field Crops (PDF)\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-ny-extension-soil-sampling\"},{\"id\":\"us-nc-extension-soil-sampling\",\"c\":\"US\",\"cn\":\"United States\",\"place\":\"North Carolina\",\"prog\":\"NC State Extension SoilFacts\",\"purpose\":\"Routine soil fertility sampling\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":8.093712844799999,\"max_ac\":20,\"area\":\"No more than about 20 acres (8.09 ha) per sample, even where the soil looks uniform\",\"exc\":null,\"cores_min\":15,\"cores\":\"About 15 to 20 cores per sample\",\"table\":null,\"landUses\":[],\"depth\":\"Field crops: plow depth, usually about 8 inches (20.32 cm). Perennial crops being maintained (fescue, alfalfa, turf): 4 inches (10.16 cm).\",\"method\":\"Cores at random locations through one field or area of one soil type or condition. A separate sample for each area that differs in slope, color, drainage or texture and can be fertilized separately.\",\"time\":[\"Repeat: Coastal plain: every 2 to 3 years. Piedmont and mountains: once every 4 years is usually enough.\",\"Season: 3 to 6 months before planting, at the same time every year if possible. Perennial or sod crops: 3 to 4 months before establishing the crop or applying lime or fertilizer.\"],\"src\":\"https:\/\/content.ces.ncsu.edu\/careful-soil-sampling-the-key-to-reliable-soil-test-information\",\"srcLabel\":\"NC State Extension, AG-439-30, Careful Soil Sampling\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-nc-extension-soil-sampling\"},{\"id\":\"us-nd-extension-soil-sampling\",\"c\":\"US\",\"cn\":\"United States\",\"place\":\"North Dakota\",\"prog\":\"NDSU Extension sampling advice\",\"purpose\":\"Soil sampling for fertilizer recommendations, including nitrate\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":0.40468564224,\"max_ac\":1,\"area\":\"Where grid sampling is used: one sample per acre (0.40 ha). Coarser grids, such as one sample per 2.5 acres, are inadequate in North Dakota. The guide sets no area for zone samples.\",\"exc\":null,\"cores_min\":8,\"cores\":\"Eight to 10 cores at random within each zone\",\"table\":null,\"landUses\":[],\"depth\":\"0 to 6 inches (0 to 15.24 cm) for pH, P, K, Zn, Cu, Mn. 0 to 2 feet (0 to 60.96 cm) for nitrate-N and chloride, best split at 6 inches. No-till: 0 to 2 inches (0 to 5.08 cm) separately from 2 to 6 inches.\",\"method\":\"Zone sampling, with zones built from at least two tools such as crop canopy imagery, soil EC sensors, multiyear yield maps and elevation. A systematic unaligned grid only in areas with large manure applications or fields with large P and K buildup applications.\",\"time\":[\"Season: Nitrate samples may be taken right after any grain harvest. Sample for K at the same time each year.\"],\"src\":\"https:\/\/www.ndsu.edu\/agriculture\/ag-hub\/publications\/soil-sampling-basis-fertilizer-application\",\"srcLabel\":\"NDSU Extension, SF990 Soil Sampling as a Basis for Fertilizer Application\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-nd-extension-soil-sampling\"},{\"id\":\"us-oh-extension-soil-sampling\",\"c\":\"US\",\"cn\":\"United States\",\"place\":\"Ohio\",\"prog\":\"Ohio State University Extension, Ohioline fact sheets\",\"purpose\":\"Soil sampling to develop nutrient recommendations\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":10.117141056,\"max_ac\":25,\"area\":\"No sample zone over 25 acres (10.12 ha). Grid option: one point per 2.5 acres (360 by 360 feet).\",\"exc\":null,\"cores_min\":15,\"cores\":\"At least 15 cores per composite from 25 acres or less; 20 to 25 after banded fertilizer. Zones: 10 to 15 cores. Grid points: 8 cores within a 10-foot circle.\",\"table\":null,\"landUses\":[],\"depth\":\"8 inches (20.32 cm), the depth most soil tests are calibrated to. No-till: a 0 to 2 inch (0 to 5.08 cm) sample for pH may help.\",\"method\":\"Systematic grid sampling, or management zones from yield maps, management history and other data; zigzag through each zone. Georeferenced points help track trends.\",\"time\":[],\"src\":\"https:\/\/ohioline.osu.edu\/factsheet\/agf-513\",\"srcLabel\":\"Ohioline AGF-513, Soil Sampling to Develop Nutrient Recommendations\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-oh-extension-soil-sampling\"},{\"id\":\"us-pa-extension-soil-sampling\",\"c\":\"US\",\"cn\":\"United States\",\"place\":\"Pennsylvania\",\"prog\":\"Penn State Extension sampling advice\",\"purpose\":\"Routine soil fertility sampling for cropland and forage\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":4.046856422399999,\"max_ac\":10,\"area\":\"One sample should not represent more than 10 to 20 acres (4.05 to 8.09 ha)\",\"exc\":null,\"cores_min\":15,\"cores\":\"At least 15 to 20 spots at random over the field\",\"table\":null,\"landUses\":[],\"depth\":\"Plow depth in cultivated fields. No-till: one sample to 6 inches (15.24 cm) and one to 2 inches (5.08 cm). Permanent pasture: 3 to 4 inches (7.62 to 10.16 cm).\",\"method\":\"Cores at random over the field, between old crop rows; separate samples from known problem areas.\",\"time\":[\"Repeat: At least every 3 years, or when the cropping system changes significantly\",\"Season: Fall is the best time logistically. Before a forage seeding: at least 6 months ahead.\"],\"src\":\"https:\/\/extension.psu.edu\/soil-fertility-management-for-forage-crops-pre-establishment\",\"srcLabel\":\"Penn State Extension, Soil Fertility Management for Forage Crops: Pre-establishment\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-pa-extension-soil-sampling\"},{\"id\":\"us-sc-clemson-soil-sampling\",\"c\":\"US\",\"cn\":\"United States\",\"place\":\"South Carolina\",\"prog\":\"Clemson University Agricultural Service Laboratory sampling guidelines\",\"purpose\":\"Routine soil fertility sampling\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":4.046856422399999,\"max_ac\":10,\"area\":\"One sample per 10 acres or less (4.05 ha) on large areas\",\"exc\":null,\"cores_min\":12,\"cores\":\"Sub-samples from at least 12 locations\",\"table\":null,\"landUses\":[],\"depth\":\"Cultivated areas: surface to 6 to 8 inches (15.24 to 20.32 cm). Pasture or turf: 2 to 4 inches (5.08 to 10.16 cm).\",\"method\":\"Sample separately areas cropped or fertilized differently, or with different soil types or textures.\",\"time\":[],\"src\":\"https:\/\/www.clemson.edu\/public\/regulatory\/ag-srvc-lab\/collecting-guidelines.html\",\"srcLabel\":\"Clemson Agricultural Service Laboratory, Guidelines for Collecting Samples\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-sc-clemson-soil-sampling\"},{\"id\":\"us-sd-sdsu-extension-soil-sampling\",\"c\":\"US\",\"cn\":\"United States\",\"place\":\"South Dakota\",\"prog\":\"SDSU Extension, Recommended Soil Sampling Methods for South Dakota\",\"purpose\":\"Routine soil fertility and nitrate sampling\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":1.0117141055999999,\"max_ac\":2.5,\"area\":\"Grid cells no larger than 2.5 acres (1.01 ha)\",\"exc\":null,\"cores_min\":6,\"cores\":\"At least 15 cores for a whole field or a zone. A grid sample is usually 6 to 8 cores.\",\"table\":null,\"landUses\":[],\"depth\":\"0 to 6 inches (0 to 15.24 cm) for P, K, pH, organic matter, soluble salts, zinc, iron, manganese, copper and boron. For mobile nutrients such as nitrate, chloride and sulfur, a 24 inch sample split into 0 to 6 and 6 to 24 inches (15.24 to 60.96 cm).\",\"method\":\"Whole field composite, a grid of 2.5 acres or less, or directed zone sampling by landscape, yield, imagery or soil conductivity.\",\"time\":[\"Repeat: P, K, pH, salts, Ca, Mg and micronutrients every 2 to 3 years. Nitrate every year before non-legume crops.\",\"Season: Mobile nutrients, nitrate in particular: late fall once soil is below 50 F, winter, or early spring. Most other tests any time of year.\"],\"src\":\"https:\/\/extension.sdstate.edu\/sites\/default\/files\/2019-09\/P-00132.pdf\",\"srcLabel\":\"SDSU Extension P-00132 (PDF)\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-sd-sdsu-extension-soil-sampling\"},{\"id\":\"us-tn-ut-extension-soil-sampling\",\"c\":\"US\",\"cn\":\"United States\",\"place\":\"Tennessee\",\"prog\":\"UT Extension, Soil Testing for Commercial Farmers\",\"purpose\":\"Routine soil fertility sampling\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":4.046856422399999,\"max_ac\":10,\"area\":\"A composite from an area of no more than 10 acres (4.05 ha). Grids of 2.5 or 5 acres are widely used.\",\"exc\":null,\"cores_min\":6,\"cores\":\"About 20 locations per composite. Six or eight cores per grid sample.\",\"table\":null,\"landUses\":[],\"depth\":\"6 inches (15.24 cm) for pH, P, K, Ca, Mg, micronutrients and organic matter. 12 inches (30.48 cm) for the corn pre-sidedress nitrate test.\",\"method\":\"Whole field composite in a zigzag pattern, grid, or zones built from soil type, lime and fertilizer history and yield maps. Sample contrasting areas separately.\",\"time\":[\"Repeat: Continuous conventional row crops every 2 to 3 years. Double cropping, continuous no-till corn or cotton, and hay every 2 years. Continuous no-till soybeans only, and pasture, every 3 to 5 years. Tobacco and vegetables every year.\",\"Season: September to November, or March to April\"],\"src\":\"https:\/\/soillab.tennessee.edu\/wp-content\/uploads\/sites\/129\/2026\/03\/Field-Soil-Sampling.pdf\",\"srcLabel\":\"UT Extension W 1194, Soil Testing for Commercial Farmers (PDF)\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-tn-ut-extension-soil-sampling\"},{\"id\":\"us-tx-agrilife-soil-sampling\",\"c\":\"US\",\"cn\":\"United States\",\"place\":\"Texas\",\"prog\":\"Texas A and M AgriLife Extension, Procedure for Taking Soil Samples\",\"purpose\":\"Routine soil fertility sampling\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":16.187425689599998,\"max_ac\":40,\"area\":\"One composite sample for every 10 to 40 acres (4.05 to 16.19 ha)\",\"exc\":null,\"cores_min\":10,\"cores\":\"10 to 15 cores per composite (one core, then 9 to 14 more)\",\"table\":null,\"landUses\":[],\"depth\":\"0 to 6 inches (0 to 15.24 cm)\",\"method\":\"Separate samples for different soil types, land uses or fertilizer rates, cropping histories and terrain. Avoid fertilizer bands, small gullies, depressions, terraces, waterways and unusual areas.\",\"time\":[\"Wait: At least 2 months after the last fertilization\"],\"src\":\"https:\/\/soiltesting.tamu.edu\/soiltesting\/wp-content\/uploads\/sites\/13\/2023\/05\/soilwebform.pdf\",\"srcLabel\":\"Texas A and M AgriLife Extension, Soil Sample Information Form (PDF)\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-tx-agrilife-soil-sampling\"},{\"id\":\"us-va-4vac50-85-140-nutrient-management-plan\",\"c\":\"US\",\"cn\":\"United States\",\"place\":\"Virginia\",\"prog\":\"Nutrient Management Training and Certification Regulations\",\"purpose\":\"Soil analysis behind a nutrient management plan\",\"type\":\"Conditional\",\"guidance\":0,\"max_ha\":8.093712844799999,\"max_ac\":20,\"area\":\"A composite sample should represent up to about 20 acres (8.09 ha). Strip-cropped fields may be combined where soils, cropping history and fertility are similar.\",\"exc\":null,\"cores_min\":null,\"cores\":null,\"table\":null,\"landUses\":[],\"depth\":\"Fields not tilled in the past 3 years: 0 to 4 inches (0 to 10.16 cm). Fields tilled in the past 3 years: 0 to 6 inches (0 to 15.24 cm).\",\"method\":\"Representative results by standard sampling and analysis methods (Methods of Soil Analysis, Part 3, 1996). Subfield grids or management zones may be used.\",\"time\":[\"Result valid: Dated no more than 3 years before the plan begins\",\"Repeat: The plan must recommend soil analysis for each field at least once every 3 years\"],\"src\":\"https:\/\/law.lis.virginia.gov\/admincode\/title4\/agency50\/chapter85\/section140\/\",\"srcLabel\":\"4VAC50-85-140, Required nutrient management plan procedures\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-va-4vac50-85-140-nutrient-management-plan\"},{\"id\":\"us-va-vt-extension-soil-sampling\",\"c\":\"US\",\"cn\":\"United States\",\"place\":\"Virginia\",\"prog\":\"Virginia Cooperative Extension, Soil Sampling Instructions for the Farm\",\"purpose\":\"Routine soil fertility sampling\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":4.046856422399999,\"max_ac\":10,\"area\":\"Areas of 5 to 10 acres (2.02 to 4.05 ha) where fields vary. Precision grids typically 2.5 acres, 1 acre on small fields.\",\"exc\":null,\"cores_min\":6,\"cores\":\"20 or more places per field, and at least 5 cores per acre represented. Grid points: 6 to 8 subsamples.\",\"table\":null,\"landUses\":[],\"depth\":\"Cropland: plow depth, 6 to 8 inches or more (15.24 to 20.32 cm). Pasture and no-till crop fields: 2 to 4 inches (5.08 to 10.16 cm).\",\"method\":\"Zig-zag across each uniform area. Grid sampling, typically 2.5 acres, or smart sampling by topography, yield or soil map unit.\",\"time\":[\"Season: Fall sampling suggested, so lime can go on before the next season\",\"Wait: At least 6 to 8 weeks after liming or fertilizing\"],\"src\":\"https:\/\/www.soiltest.vt.edu\/content\/dam\/soiltest_vt_edu\/PDF\/farm-sampling.pdf\",\"srcLabel\":\"Virginia Cooperative Extension SPES-141NP (PDF)\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-va-vt-extension-soil-sampling\"},{\"id\":\"us-wi-uw-a2100-soil-sampling\",\"c\":\"US\",\"cn\":\"United States\",\"place\":\"Wisconsin\",\"prog\":\"UW Extension A2100, Sampling Soils for Testing\",\"purpose\":\"Routine soil fertility sampling\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":2.0234282111999997,\"max_ac\":5,\"area\":\"One composite per 5 acres (2.02 ha) on responsive fields and fields not sampled in the past 4 years. Fewer samples on nonresponsive fields tested within 4 years (Table 1).\",\"exc\":null,\"cores_min\":10,\"cores\":\"At least 10 cores per composite. 10 to 20 cores give a more representative sample.\",\"table\":null,\"landUses\":[],\"depth\":\"Plow depth or at least 6 inches (15.24 cm). Chisel or disk: three quarters of tillage depth. Ridge till: 6 inches on ridges, 4 in furrows. No-till: 6 to 7 inches (17.78 cm) for fertilizer advice, plus 2 inches for pH if an acid layer is suspected.\",\"method\":\"W-shaped pattern for a whole field composite. Unaligned grid-point sampling at 200 feet (about 1 acre) or, on nonresponsive fields, 300 feet (2 to 2.5 acres). Zone (smart) sampling.\",\"time\":[\"Repeat: At least every 4 years. Sands and loamy sands every 2 years.\",\"Season: Any convenient time; fall may be best, so lime and fertilizer advice arrives in time. Hayfields after any cutting. Stay consistent from one year to the next.\"],\"src\":\"https:\/\/portage.extension.wisc.edu\/files\/2024\/07\/Sampoling-Soils-for-Testing.pdf\",\"srcLabel\":\"UW Extension A2100, Sampling Soils for Testing (PDF)\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-wi-uw-a2100-soil-sampling\"},{\"id\":\"us-wy-uw-extension-dry-bean-soil-sampling\",\"c\":\"US\",\"cn\":\"United States\",\"place\":\"Wyoming\",\"prog\":\"University of Wyoming Extension, Nutrient Management Guidelines for Dry Beans\",\"purpose\":\"Pre-plant soil sampling for dry beans only\",\"type\":\"Official guidance\",\"guidance\":1,\"max_ha\":16.187425689599998,\"max_ac\":40,\"area\":\"Typical approach: one composite from a 20 to 40 acre field (8.09 to 16.19 ha)\",\"exc\":null,\"cores_min\":15,\"cores\":\"15 to 20 random locations\",\"table\":null,\"landUses\":[],\"depth\":\"Tillage zone, usually 6 or 8 inches (15.24 or 20.32 cm), for pH, organic matter, N, P, K and micronutrients. For nitrate, a 12 inch (30.48 cm) core split into 0 to 6 and 6 to 12 inches, unless tillage mixes the soil to one foot.\",\"method\":null,\"time\":[\"Season: Before planting. Sample at the same time of year each time.\"],\"src\":\"https:\/\/www.wyoextension.org\/agpubs\/pubs\/B1016R.pdf\",\"srcLabel\":\"University of Wyoming Extension B-1016R (PDF)\",\"more\":\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/#rule-us-wy-uw-extension-dry-bean-soil-sampling\"}]<\/script>\n<!-- SSR-EST-DATA END -->\n<section id=\"ssr-est\" aria-labelledby=\"ssr-est-h\" hidden>\n  <div class=\"ssr-est\">\n    <div class=\"ssr-est-form\">\n      <h2 class=\"ssr-h2\" id=\"ssr-est-h\">Samples and cores for a field<\/h2>\n      <div class=\"ssr-est-row\">\n        <label class=\"ssr-est-lab\" for=\"ssr-est-rule\">Rule<\/label>\n        <select id=\"ssr-est-rule\" class=\"ssr-select\" data-no-translation><option value=\"\">Choose a country and rule<\/option><\/select>\n      <\/div>\n      <div class=\"ssr-est-row\">\n        <label class=\"ssr-est-lab\" for=\"ssr-est-area\">Field area<\/label>\n        <div class=\"ssr-est-area\">\n          <input type=\"number\" id=\"ssr-est-area\" inputmode=\"decimal\" min=\"0\" step=\"any\" placeholder=\"40\" autocomplete=\"off\">\n          <div class=\"ssr-units\" role=\"group\" aria-label=\"Unit\">\n            <button type=\"button\" class=\"ssr-unit\" data-u=\"ha\" aria-pressed=\"true\">ha<\/button>\n            <button type=\"button\" class=\"ssr-unit\" data-u=\"ac\" aria-pressed=\"false\">acres<\/button>\n          <\/div>\n        <\/div>\n      <\/div>\n      <p class=\"ssr-est-err\" id=\"ssr-est-err\" hidden>Enter the field area.<\/p>\n    <\/div>\n    <div class=\"ssr-est-out\" id=\"ssr-est-out\" hidden aria-live=\"polite\">\n      <div class=\"ssr-est-figs\">\n        <div class=\"ssr-est-fig\"><span class=\"k\">Samples<\/span><span class=\"v\" data-o=\"samples\"><\/span><span class=\"n\" data-o=\"per\"><\/span><\/div>\n        <div class=\"ssr-est-fig\"><span class=\"k\">Cores<\/span><span class=\"v\" data-o=\"cores\"><\/span><span class=\"n\" data-o=\"coresn\"><\/span><\/div>\n      <\/div>\n      <dl class=\"ssr-facts ssr-est-facts\" data-no-translation>\n        <div><dt>Area per sample<\/dt><dd data-o=\"area\"><\/dd><\/div>\n        <div><dt>Depth<\/dt><dd data-o=\"depth\"><\/dd><\/div>\n        <div><dt>Method<\/dt><dd data-o=\"method\"><\/dd><\/div>\n        <div><dt>Timing<\/dt><dd data-o=\"time\"><\/dd><\/div>\n      <\/dl>\n      <p class=\"ssr-est-note\">For one uniform field. Areas that differ in soil, cropping history, slope or drainage are sampled separately, which adds samples.<\/p>\n      <p class=\"ssr-est-note\" data-o=\"excp\" hidden>Not applied: <span data-o=\"exc\" data-no-translation><\/span><\/p>\n      <p class=\"ssr-est-note\" data-o=\"guide\" hidden>Official guidance, not law.<\/p>\n      <p class=\"ssr-est-links\"><a data-o=\"src\" data-ssr-src rel=\"noopener\" href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/\">Official source<\/a><a data-o=\"more\" href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/\">The exact wording<\/a><\/p>\n      <div class=\"ssr-hero-btns ssr-est-cta\"><a class=\"ssr-btn\" id=\"ssr-cta-est\" href=\"https:\/\/geopard.tech\/soil-sampling\/\">See how GeoPard places the points<\/a><\/div>\n    <\/div>\n  <\/div>\n<\/section>\n\n<section aria-labelledby=\"ssr-diff-h\">\n  <h2 class=\"ssr-h2\" id=\"ssr-diff-h\">How the rules differ<\/h2>\n  <div class=\"ssr-feat-grid\" data-no-translation>\n<!-- SSR-FEATURED BEGIN -->\n<div class=\"ssr-feat-box\"><span class=\"ssr-feat-k\">Germany<\/span><h3>Germany sets the interval, the federal states set the method<\/h3><p>Before substantial nutrient applications, the Fertiliser Ordinance requires a phosphate test at least every six years on each field of 1 ha or more. Depth, cores and area come from the federal state protocol.<\/p><p class=\"ssr-feat-links\"><a href=\"#rule-de-duv-4-4-phosphate\" data-ssr-row=\"de-duv-4-4-phosphate\">The rule in the table<\/a><a href=\"https:\/\/www.gesetze-im-internet.de\/d_v_2017\/__4.html\" data-ssr-src rel=\"noopener\">D\u00fcngeverordnung 2017, last amended 11 December 2024<\/a><\/p><\/div>\n<div class=\"ssr-feat-box\"><span class=\"ssr-feat-k\">Ireland<\/span><h3>Ireland sets the cores and the depth in law<\/h3><p>Schedule 1 fixes 20 cores to 10 cm and one sample per 4 ha, or 5 ha where soils and cropping were alike for five years.<\/p><p class=\"ssr-feat-links\"><a href=\"#rule-ie-si-588-2025-soil-test\" data-ssr-row=\"ie-si-588-2025-soil-test\">The rule in the table<\/a><a href=\"https:\/\/www.irishstatutebook.ie\/eli\/2025\/si\/588\/made\/en\/print\" data-ssr-src rel=\"noopener\">S.I. No. 588\/2025, as amended by S.I. No. 119\/2026<\/a><\/p><\/div>\n<div class=\"ssr-feat-box\"><span class=\"ssr-feat-k\">England<\/span><h3>England limits the age of the result, not the grid<\/h3><p>Under the Farming Rules for Water, the test results behind a manure or fertiliser plan must be no more than five years old. No grid size, depth or core count is set.<\/p><p class=\"ssr-feat-links\"><a href=\"#rule-gb-eng-frfw-reg-5\" data-ssr-row=\"gb-eng-frfw-reg-5\">The rule in the table<\/a><a href=\"https:\/\/www.legislation.gov.uk\/uksi\/2018\/151\/regulation\/5\" data-ssr-src rel=\"noopener\">The Reduction and Prevention of Agricultural Diffuse Pollution (England) Regulations 2018, SI 2018\/151<\/a><\/p><\/div>\n<!-- SSR-FEATURED END -->\n  <\/div>\n<\/section>\n\n<section aria-labelledby=\"ssr-steps-h\">\n  <h2 class=\"ssr-h2\" id=\"ssr-steps-h\">From the rule to the sampling plan<\/h2>\n  <ol class=\"ssr-steps\">\n    <li><b>Find your rule<\/b><span>Country, region and the nutrient you are testing for.<\/span><\/li>\n    <li><b>Check that it applies<\/b><span>Who is in scope, who is outside it, and whether it is law or guidance.<\/span><\/li>\n    <li><b>Choose a method it allows<\/b><span>Grid or zones, inside the area per sample, the cores and the depth it sets.<\/span><\/li>\n    <li><b>Record and confirm<\/b><span>Field and sample identifiers on every bag; the details with your laboratory or agronomist.<\/span><\/li>\n  <\/ol>\n<\/section>\n\n<section aria-labelledby=\"ssr-prod-h\">\n  <div class=\"ssr-prod\">\n    <div>\n      <h2 class=\"ssr-h2\" id=\"ssr-prod-h\">From sampling requirements to sampling points<\/h2>\n      <p>GeoPard builds grid-based or zone-based sampling plans, with core or composite sampling, point placement, an optimized route, printed sample labels, KML export and the plan on a phone in the field. Set the plan to your local rule and your laboratory&#8217;s instructions.<\/p>\n      <div class=\"ssr-hero-btns\">\n        <a class=\"ssr-btn\" id=\"ssr-cta-product\" href=\"https:\/\/geopard.tech\/soil-sampling\/\">Open Soil Sampling Planner<\/a>\n        <a class=\"ssr-btn-ghost\" id=\"ssr-tutorial\" data-gp-doc=\"product-tour-web-app\/soil-sampling-automated-planning\" href=\"https:\/\/docs.geopard.tech\/geopard-tutorials\/product-tour-web-app\/soil-sampling-automated-planning\">Soil sampling tutorial<\/a>\n      <\/div>\n    <\/div>\n    <div class=\"ssr-prod-img\">\n      <img loading=\"lazy\" src=\"https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2025\/10\/How-GeoPard-Helps-in-Automated-Soil-Sampling-Planning.png?w=946\" width=\"946\" height=\"926\" loading=\"lazy\" decoding=\"async\" alt=\"GeoPard batch sampling planner: for each field, the zones map the sampling points are generated from, picked from the field's saved zone maps.\">\n    <\/div>\n    <figure class=\"ssr-prod-plan\">\n      <div class=\"ssr-prod-plan-f\"><img loading=\"lazy\" src=\"https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2026\/10\/geopard-hero-v7-10-zones-and-sampling-plan.jpg?w=1360\" srcset=\"https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2026\/10\/geopard-hero-v7-10-zones-and-sampling-plan.jpg?w=760 760w, https:\/\/i0.wp.com\/geopard.tech\/wp-content\/uploads\/2026\/10\/geopard-hero-v7-10-zones-and-sampling-plan.jpg?w=1360 1360w\" sizes=\"auto, (max-width: 1200px) 100vw, 1300px\" width=\"1360\" height=\"640\" loading=\"lazy\" decoding=\"async\" alt=\"A soil sampling plan in GeoPard: management zones across a field, the sampling points placed in each zone and the route that links them.\"><\/div>\n      <figcaption class=\"ssr-cap\">Sampling points placed by zone, with the route that links them.<\/figcaption>\n    <\/figure>\n  <\/div>\n<\/section>\n\n<section aria-labelledby=\"ssr-proof-h\">\n  <h2 class=\"ssr-h2\" id=\"ssr-proof-h\">Records for inspections and schemes<\/h2>\n  <p class=\"ssr-lede ssr-intro\">An inspector, a nutrient management plan or a scheme application asks where you sampled, when, and what the laboratory found. GeoPard keeps that for every sample.<\/p>\n  <div class=\"ssr-proof\">\n    <div><b>The planned point<\/b><span>Coordinates of every point, and the zone or grid cell each sample stands for.<\/span><\/div>\n    <div><b>The sample as taken<\/b><span>The time and position each sample was taken, recorded on the phone in the field.<\/span><\/div>\n    <div><b>The label<\/b><span>Field and sample number on every bag, matching the plan.<\/span><\/div>\n    <div><b>The laboratory result<\/b><span>Loaded against the same field and points, next to yield, imagery and as-applied maps.<\/span><\/div>\n  <\/div>\n  <p class=\"ssr-proof-note\">Plan, labels and results export together as one record. In Ireland, every result issued since 14 September 2025 must carry the georeference or LPIS number of the ground it represents. You and your advisor confirm the work against the rule that applies.<\/p>\n<\/section>\n\n<section aria-labelledby=\"ssr-meth-h\">\n  <div class=\"ssr-meth\">\n    <div>\n      <h2 class=\"ssr-h2\" id=\"ssr-meth-h\">How we classify soil sampling requirements<\/h2>\n      <p class=\"ssr-intro\">A row is Mandatory when the law applies to every farm in its scope, and Conditional when it applies only once something happens: a farm enters a nutrient programme, passes a stocking rate, or plans a manure or fertiliser application. Official guidance is advice from a public body and carries no legal duty. Where a source sets no value, the cell reads Not specified, never a number borrowed from another country.<\/p>\n      <p>How often to sample and how long a result counts are different rules. Germany sets how often: a phosphate test at least every six years. England and Ireland limit how old a result may be when it is used. The Time column labels each one: Repeat, Result valid, Season or Wait.<\/p>\n      <p>The summary in the table helps you find the rule. The quoted wording in a row&#8217;s details, in the source language with an English rendering, is what applies.<\/p>\n    <\/div>\n    <div class=\"ssr-ed\">\n      <p><b>Editor:<\/b> GeoPard agronomy team<\/p>\n      <p><b>Sources:<\/b> re-checked every two months. Last update: <!-- SSR-STAMP BEGIN -->October 2026<!-- SSR-STAMP END --><\/p>\n      <p><b>Report an outdated requirement:<\/b> <a href=\"mailto:info@geopard.tech?subject=Soil%20sampling%20regulations%20correction\" id=\"ssr-correct\">info@geopard.tech<\/a><\/p>\n    <\/div>\n  <\/div>\n<\/section>\n<div class=\"ssr-end\"><\/div>\n\n<script nowprocket data-no-optimize=\"1\" data-no-defer=\"1\" data-no-minify=\"1\">\n\/* GPD-DOCS-EMBED BEGIN (generated from tools\/docs-hub\/docs-embed-core.js) *\/\n\/* GPD-DOCS-EMBED \u2014 the docs overlay driver, source of truth.\n   Injected into source.html between the GPD-DOCS-EMBED markers by\n   scripts\/rebuild.sh. Edit THIS file, never the generated section.\n   shared\/docs_embed.html carries the same text; tests.js pins the two.\n   What it does: opens docs.geopard.tech in a panel ON the current page, at the\n   exact documentation page the reader asked for, and never in a new tab\n   (rule 25). 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Do not hand-edit. -->\n<div class=\"gp-lead\">\n<style>\n.gp-lead .gpx-faq{margin:36px 0 8px}\n.gp-lead .gpx-faq h2{text-align:center;margin:0 0 20px;font-size:1.6rem}\n.gp-lead .gpx-tabs{border:1px solid #e8ebe2;border-radius:16px;overflow:hidden;background:#fff}\n.gp-lead .gpx-tablist{display:flex;gap:0;background:#f6f7f1;border-bottom:1px solid #e8ebe2;overflow-x:auto;scrollbar-width:none}\n.gp-lead .gpx-tablist::-webkit-scrollbar{display:none}\n.gp-lead .gpx-tab{flex:1 1 auto;min-width:max-content;background:transparent;border:0;padding:16px 22px;font-family:inherit;font-size:.95rem;font-weight:700;color:#4c6066;cursor:pointer;border-bottom:3px solid transparent;white-space:nowrap}\n.gp-lead .gpx-tab:hover{color:#145328;background:#f0f4ea}\n.gp-lead .gpx-tab[aria-selected=\"true\"]{color:#145328;border-bottom-color:#15701e;background:#fff}\n.gp-lead .gpx-tab:focus{outline:2px solid #15701e;outline-offset:-2px}\n.gp-lead .gpx-panel{padding:28px 32px;display:none}\n.gp-lead .gpx-panel.is-active{display:block}\n.gp-lead .gpx-panel h3{margin:0 0 10px;font-size:1.12rem;color:#212121}\n.gp-lead .gpx-panel p{margin:0;line-height:1.7;color:#243024;font-size:1rem}\n.gp-lead .gpx-panel p+p{margin-top:10px}\n@media (max-width:760px){\n  .gp-lead .gpx-panel{padding:22px 20px}\n  .gp-lead .gpx-tab{padding:14px 16px;font-size:.9rem}\n}\n<\/style>\n<section class=\"gpx-faq\" aria-labelledby=\"gpx-faq-h\">\n  <h2 id=\"gpx-faq-h\">Frequently asked questions<\/h2>\n  <div class=\"gpx-tabs\">\n    <div class=\"gpx-tablist\" role=\"tablist\" aria-label=\"Soil sampling regulations: questions FAQ\">\n      <button class=\"gpx-tab\" role=\"tab\" id=\"gpx-tab-1\" aria-controls=\"gpx-panel-1\" aria-selected=\"true\" tabindex=\"0\">How often<\/button>\n      <button class=\"gpx-tab\" role=\"tab\" id=\"gpx-tab-2\" aria-controls=\"gpx-panel-2\" aria-selected=\"false\" tabindex=\"-1\">Grid sampling<\/button>\n      <button class=\"gpx-tab\" role=\"tab\" id=\"gpx-tab-3\" aria-controls=\"gpx-panel-3\" aria-selected=\"false\" tabindex=\"-1\">Cores and samples<\/button>\n      <button class=\"gpx-tab\" role=\"tab\" id=\"gpx-tab-4\" aria-controls=\"gpx-panel-4\" aria-selected=\"false\" tabindex=\"-1\">By nutrient<\/button>\n      <button class=\"gpx-tab\" role=\"tab\" id=\"gpx-tab-5\" aria-controls=\"gpx-panel-5\" aria-selected=\"false\" tabindex=\"-1\">Certified plan<\/button>\n    <\/div>\n    <div class=\"gpx-panel is-active\" role=\"tabpanel\" id=\"gpx-panel-1\" aria-labelledby=\"gpx-tab-1\">\n      <h3>How often should I test my soil?<\/h3>\n      <p>It depends on the rule that applies to your field. Germany requires a phosphate test at least every six years on each field of 1 ha or more. England requires the results behind a manure or fertiliser plan to be no more than five years old. Ireland disregards P results after four years, except at Index 4.<\/p>\n      <p>Where no rule applies, Teagasc advises basing fertiliser advice on tests for 4 to 5 years and sampling between September and March.<\/p>\n    <\/div>\n    <div class=\"gpx-panel\" role=\"tabpanel\" id=\"gpx-panel-2\" aria-labelledby=\"gpx-tab-2\">\n      <h3>Is grid sampling legally required?<\/h3>\n      <p>Not under any rule in the table. Ireland prescribes a sampling pattern inside each area of up to 4 ha, with separate samples where soils differ. The Netherlands accepts a W, zig-zag or crosswise pattern, or a stratified random sample. Germany leaves the method to each federal state, and England sets none.<\/p>\n      <p>A grid or a zone plan works wherever it stays inside the area per sample, the cores and the depth of the rule that applies.<\/p>\n    <\/div>\n    <div class=\"gpx-panel\" role=\"tabpanel\" id=\"gpx-panel-3\" aria-labelledby=\"gpx-tab-3\">\n      <h3>Is one sample the same as one soil core?<\/h3>\n      <p>No. A sample is a composite: several cores from one area, mixed into one bag for the laboratory. Ireland's procedure takes 20 cores per sample; the Dutch laboratory method takes at least 40.<\/p>\n      <p>Count samples for the laboratory bill, and cores for the time in the field.<\/p>\n    <\/div>\n    <div class=\"gpx-panel\" role=\"tabpanel\" id=\"gpx-panel-4\" aria-labelledby=\"gpx-tab-4\">\n      <h3>Why does a country have different requirements by nutrient?<\/h3>\n      <p>Because the rules come from different laws with different aims. Phosphorus rules usually sit in water protection law and decide how much phosphate a farm may apply, so they fix how old a P result may be. Nitrogen rules often need a fresh soil N figure every season; Germany asks for one at least every year on arable fields, and sets a sampling depth for each listed vegetable crop.<\/p>\n      <p>Read the row for the nutrient you are testing for, not the country as a whole.<\/p>\n    <\/div>\n    <div class=\"gpx-panel\" role=\"tabpanel\" id=\"gpx-panel-5\" aria-labelledby=\"gpx-tab-5\">\n      <h3>Can GeoPard generate a legally certified plan?<\/h3>\n      <p>No. GeoPard places the points, routes the walk and prints the labels to the area per sample, the cores and the depth you set.<\/p>\n      <p>What it gives you is the record: each planned point, the time and position each sample was taken, its label and the laboratory result, exported together for an inspection or a scheme application.<\/p>\n      <p>Whether a plan meets a rule is for you, your adviser and your laboratory to confirm against the current official text.<\/p>\n    <\/div>\n  <\/div>\n<\/section>\n<script type=\"application\/ld+json\" data-no-optimize=\"1\" data-no-minify=\"1\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How often should I test my soil?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"It depends on the rule that applies to your field. 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Whether a plan meets a rule is for you, your adviser and your laboratory to confirm against the current official text.\"\n      }\n    }\n  ]\n}\n<\/script>\n<\/div>\n<script nowprocket data-no-optimize=\"1\" data-no-defer=\"1\" data-no-minify=\"1\">\n(function(){\n  var root = document.querySelector('.gp-lead .gpx-faq');\n  if (!root) { return; }\n  var tabs = root.querySelectorAll('.gpx-tab');\n  var panels = root.querySelectorAll('.gpx-panel');\n  function activate(idx){\n    for (var i = 0; i < tabs.length; i++) {\n      var on = i === idx;\n      tabs[i].setAttribute('aria-selected', on ? 'true' : 'false');\n      tabs[i].setAttribute('tabindex', on ? 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It reuses the embed's .gp-ssr styles,\n     which are on the same page; its clicks are tracked by the embed script at the\n     document level. -->\n<div class=\"gp-ssr\">\n<section class=\"ssr-cta-sec\">\n  <div class=\"ssr-cta\">\n    <h2>Plan the points to the rule that applies<\/h2>\n    <p>Set the area per sample, the cores and the depth your rule asks for. GeoPard places the points on a grid or by zone, routes the walk, prints the labels and takes the plan to the field on a phone.<\/p>\n    <div class=\"ssr-hero-btns\">\n      <a class=\"ssr-btn\" id=\"ssr-cta-main\" href=\"https:\/\/app.geopard.tech\/auth\/sign-up?utm_source=geopard.tech&amp;utm_medium=lead-magnet&amp;utm_campaign=soil-sampling-regulations&amp;utm_content=below-tool-cta\">Create a sampling plan<\/a>\n      <a class=\"ssr-btn-ghost\" id=\"ssr-cta-planner\" href=\"https:\/\/geopard.tech\/soil-sampling\/\">See the Soil Sampling Planner<\/a>\n    <\/div>\n  <\/div>\n<\/section>\n<p class=\"ssr-legal\">A planning reference built from official sources, not legal advice. Rules apply by jurisdiction, nutrient, land use and programme: check the current official text and your laboratory's instructions before fieldwork.<\/p>\n<\/div>\n\n","protected":false},"excerpt":{"rendered":"<p>Soil sampling reference Soil sampling regulations and guidelines by country How often to test, how many hectares one sample may cover, which pattern, how deep&#8230;<\/p>","protected":false},"author":210157960,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","_eb_attr":"","content-type":"","_wpcom_ai_launchpad_about_page":false,"_wpcom_ai_launchpad_gallery_page":false,"_wpcom_ai_launchpad_contact_page":false,"_wpcom_ai_launchpad_events_page":false,"_wpcom_ai_launchpad_video_page":false,"_wpcom_ai_launchpad_portfolio_piece":false,"_jetpack_hide_featured_image":false,"_jetpack_featured_image_duplicate_dismissed":0,"footnotes":"","big_sky_generated":false},"class_list":["post-14935","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Soil Sampling Regulations by Country | GeoPard<\/title>\n<meta name=\"description\" content=\"Compare soil sampling frequency, maximum sample area, grid vs. zone methods, soil depth and cores by country. 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