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Permanent sod: every 2 to 4 years. Mobile nutrients: before responsive crops.\"}},{\"@type\":\"Question\",\"name\":\"When in the year should soil be sampled in Kansas?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"K-State Research and Extension, Soil Testing Laboratory sampling advice (official guidance): Row crops and sod: fall or spring. Nitrate, chloride and sulfur profile: late fall or early spring.\"}},{\"@type\":\"Question\",\"name\":\"How deep should soil samples be taken in Kansas?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"K-State Research and Extension, Soil Testing Laboratory sampling advice (official guidance): Row crops 0 to 6 inches. Permanent sod 0 to 4 inches. Nitrogen, chloride or sulfur tests 0 to 24 inches.\"}},{\"@type\":\"Question\",\"name\":\"How many cores go into one soil sample in Kansas?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"K-State Research and Extension, Soil Testing Laboratory sampling advice (official guidance): 10 to 15 cores or slices per area.\"}}]}<\/script>\n<div class=\"ssr-hero ssr-hero-country\"><nav class=\"ssr-crumbs\" aria-label=\"Breadcrumb\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/\">Soil sampling regulations<\/a> <span aria-hidden=\"true\">\/<\/span> <a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/\">United States<\/a> <span aria-hidden=\"true\">\/<\/span> <span aria-current=\"page\">Kansas<\/span><\/nav><h1>Soil sampling requirements in Kansas<\/h1><p class=\"ssr-lede\">State guidance: K-State Research and Extension, Soil Testing Laboratory sampling advice.<\/p><\/div><section class=\"ssr-ans\" aria-labelledby=\"ssr-ans-h\"><h2 id=\"ssr-ans-h\">Soil sampling in Kansas: frequency, area, depth and cores<\/h2><div class=\"ssr-ans-grid\"><div class=\"ssr-ans-q\"><h3>How often do you need to soil sample in Kansas?<\/h3><ul data-no-translation><li><a href=\"#rule-us-ks-kstate-extension-soil-sampling\">K-State Research and Extension, Soil Testing Laboratory sampling advice<\/a> <span class=\"ssr-ans-t\">Official guidance<\/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><\/ul><\/div><div class=\"ssr-ans-q\"><h3>When in the year should soil be sampled in Kansas?<\/h3><ul data-no-translation><li><a href=\"#rule-us-ks-kstate-extension-soil-sampling\">K-State Research and Extension, Soil Testing Laboratory sampling advice<\/a> <span class=\"ssr-ans-t\">Official guidance<\/span> Row crops and sod: fall or spring. Nitrate, chloride and sulfur profile: late fall or early spring.<\/li><\/ul><\/div><div class=\"ssr-ans-q\"><h3>How deep should soil samples be taken in Kansas?<\/h3><ul data-no-translation><li><a href=\"#rule-us-ks-kstate-extension-soil-sampling\">K-State Research and Extension, Soil Testing Laboratory sampling advice<\/a> <span class=\"ssr-ans-t\">Official guidance<\/span> Row crops 0 to 6 inches. Permanent sod 0 to 4 inches. Nitrogen, chloride or sulfur tests 0 to 24 inches.<\/li><\/ul><\/div><div class=\"ssr-ans-q\"><h3>How many cores go into one soil sample in Kansas?<\/h3><ul data-no-translation><li><a href=\"#rule-us-ks-kstate-extension-soil-sampling\">K-State Research and Extension, Soil Testing Laboratory sampling advice<\/a> <span class=\"ssr-ans-t\">Official guidance<\/span> 10 to 15 cores or slices per area.<\/li><\/ul><\/div><\/div><\/section>\n<section aria-label=\"Rules in Kansas\">\n<div class=\"ssr-scroll\" data-no-translation>\n<table class=\"ssr-table\" role=\"table\" aria-label=\"Soil sampling rules in Kansas\">\n<caption>Soil sampling rules in Kansas, with the exact wording of each source<\/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<tbody class=\"ssr-grp\" data-g=\"US\" role=\"rowgroup\"><tr role=\"row\"><th role=\"rowheader\" colspan=\"8\" scope=\"colgroup\" id=\"country-us\">United States<\/th><\/tr><\/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, the exact wording and every source<\/summary><div class=\"ssr-det\"><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-wording\"><h3>The wording in the source<\/h3><h4>Timing<\/h4><ul class=\"ssr-quotes\"><li><blockquote class=\"ssr-q\" lang=\"en\">every 2 to 4 years<\/blockquote><p class=\"ssr-q-cite\"><a href=\"https:\/\/bookstore.ksre.ksu.edu\/pubs\/MF734.pdf\" data-ssr-src rel=\"noopener\">MF734, Sampling Frequency table, Row crops, immobile nutrients<\/a><\/p><\/li><li><blockquote class=\"ssr-q\" lang=\"en\">Consistent time in rotation<\/blockquote><p class=\"ssr-q-cite\"><a href=\"https:\/\/bookstore.ksre.ksu.edu\/pubs\/MF734.pdf\" data-ssr-src rel=\"noopener\">MF734, Sampling Frequency table, Row crops<\/a><\/p><\/li><li><blockquote class=\"ssr-q\" lang=\"en\">before responsive crops<\/blockquote><p class=\"ssr-q-cite\"><a href=\"https:\/\/bookstore.ksre.ksu.edu\/pubs\/MF734.pdf\" data-ssr-src rel=\"noopener\">MF734, Sampling Frequency table, Row crops, mobile nutrients<\/a><\/p><\/li><li><blockquote class=\"ssr-q\" lang=\"en\">Fall or spring<\/blockquote><p class=\"ssr-q-cite\"><a href=\"https:\/\/bookstore.ksre.ksu.edu\/pubs\/MF734.pdf\" data-ssr-src rel=\"noopener\">MF734, Sampling Frequency table, Sampling Time for Row crops (immobile) and Permanent sod<\/a><\/p><\/li><li><blockquote class=\"ssr-q\" lang=\"en\">Soil samples for nitrate testing should be collected in the late fall or early spring before significant mineralization has occurred.<\/blockquote><p class=\"ssr-q-cite\"><a href=\"https:\/\/bookstore.ksre.ksu.edu\/pubs\/MF734.pdf\" data-ssr-src rel=\"noopener\">MF734, When to Sample and What to Test<\/a><\/p><\/li><li><blockquote class=\"ssr-q\" lang=\"en\">Every 2 to 4 years<\/blockquote><p class=\"ssr-q-cite\"><a href=\"https:\/\/bookstore.ksre.ksu.edu\/pubs\/MF734.pdf\" data-ssr-src rel=\"noopener\">MF734, Sampling Frequency table, Permanent sod<\/a><\/p><\/li><\/ul><h4>Method<\/h4><ul class=\"ssr-quotes\"><li><blockquote class=\"ssr-q\" lang=\"en\">Draw a map of the sample area on the information sheet and divide your fields into uniform areas. Each area should have the same soil texture, color, slope, and fertilization and cropping history.<\/blockquote><p class=\"ssr-q-cite\"><a href=\"https:\/\/bookstore.ksre.ksu.edu\/pubs\/MF734.pdf\" data-ssr-src rel=\"noopener\">MF734, Soil Sample Collection, step 2<\/a><\/p><\/li><\/ul><h4>Depth<\/h4><ul class=\"ssr-quotes\"><li><blockquote class=\"ssr-q\" lang=\"en\">Row crops should be sampled at 6 inches deep and permanent sod at 4 inches. For available nitrogen, chloride, or sulfur tests, a 24-inch sample is necessary.<\/blockquote><p class=\"ssr-q-cite\"><a href=\"https:\/\/bookstore.ksre.ksu.edu\/pubs\/MF734.pdf\" data-ssr-src rel=\"noopener\">MF734, Soil Sample Collection, step 3<\/a><\/p><\/li><\/ul><h4>Cores<\/h4><ul class=\"ssr-quotes\"><li><blockquote class=\"ssr-q\" lang=\"en\">From each area, sample 10 to 15 cores or slices.<\/blockquote><p class=\"ssr-q-cite\"><a href=\"https:\/\/bookstore.ksre.ksu.edu\/pubs\/MF734.pdf\" data-ssr-src rel=\"noopener\">MF734, Soil Sample Collection, step 3<\/a><\/p><\/li><\/ul><h4>Field identifiers<\/h4><ul class=\"ssr-quotes\"><li><blockquote class=\"ssr-q\" lang=\"en\">Label the soil container clearly. Record the sample identification on the container and information sheet.<\/blockquote><p class=\"ssr-q-cite\"><a href=\"https:\/\/bookstore.ksre.ksu.edu\/pubs\/MF734.pdf\" data-ssr-src rel=\"noopener\">MF734, Soil Sample Collection, step 5<\/a><\/p><\/li><\/ul><\/div><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><\/div><\/div><\/details><\/td><\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p class=\"ssr-back\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/united-states\/\">United States: federal rules and every other state<\/a><\/p>\n<p class=\"ssr-back\"><a href=\"https:\/\/geopard.tech\/soil-sampling-regulations\/\">Soil sampling regulations in every country<\/a><\/p>\n<p class=\"ssr-back\">Report an outdated requirement: <a href=\"mailto:info@geopard.tech?subject=Soil%20sampling%20regulations%20correction\">info@geopard.tech<\/a><\/p>\n<\/section>\n<\/div>\n\n\n\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&#8217;s instructions before fieldwork.<\/p>\n<\/div>\n\n","protected":false},"excerpt":{"rendered":"<p>Pinnaseproovide v\u00f5tmise eeskirjad \/ Ameerika \u00dchendriigid \/ Kansas Pinnaseproovide v\u00f5tmise n\u00f5uded Kansases Osariigi juhised: K-State Research and Extension, Pinnase Testing Laboratory prooviv\u00f5tun\u00f5uanded Pinnase\u2026<\/p>","protected":false},"author":210157960,"featured_media":0,"parent":14962,"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-15101","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - 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