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Zahteve za vzorčenje tal v Wyomingu

Zahteve za vzorčenje tal v Wyomingu

Državne smernice: Podaljšanje Univerze v Wyomingu, Smernice za upravljanje hranil za suhi fižol.

Vzorčenje tal v Wyomingu: pogostost, površina, globina in vzorci

Kdaj v letu je treba v Wyomingu vzorčiti zemljo?

Koliko hektarjev lahko pokrije en vzorec tal v Wyomingu?

Kako globoko je treba odvzeti vzorce tal v Wyomingu?

Koliko jeder gre v en vzorec tal v Wyomingu?

Koliko vzorcev tal potrebuje 100-akrsko polje v Wyomingu?

University of Wyoming Extension, Nutrient Management Guidelines for Dry Beans: Za enotno 40-akrsko polje so potrebni vsaj 3 sestavljeni vzorci, vsak s površino največ 40 akrov, in vsaj 45 jeder skupaj, 15 na vzorec.

Vzorci in jedra za polja vseh velikosti

Soil sampling rules in Wyoming, with the exact wording of each source
Country / region Purpose / programme Time / frequency Area per sample Method Depth Cores Status and source
United States
WyomingUnited StatesWyoming only. Other states set their own rules.Pre-plant soil sampling for dry beans onlyUniversity of Wyoming Extension, Nutrient Management Guidelines for Dry Beans
  • Season Before planting. Sample at the same time of year each time.
Typical approach: one composite from a 20 to 40 acre field (8.09 to 16.19 ha)Not specifiedTillage 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.15 to 20 random locationsOfficial guidanceUniversity of Wyoming Extension B-1016R (PDF)
Who it applies to, the exact wording and every source
Who it applies to
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.
In force from
Under review
Legal text
University of Wyoming Cooperative Extension Service B-1016R, Nutrient Management Guidelines for Dry Beans (June 2005)

The wording in the source

Timing

  • Before planting occurs, a representative soil sample should be collected from the tillage zone (usually a 6 or 8 inch depth)

    B-1016R p. 1

  • For best results, always collect samples at the same time of the year.

    B-1016R, Potassium

Area per sample

  • A typical sampling approach is to extract a 12-inch soil core from 15 to 20 random locations within a 20- to 40-acre field.

    B-1016R p. 1

Depth

  • Before planting occurs, a representative soil sample should be collected from the tillage zone (usually a 6 or 8 inch depth) for determination of pH, organic matter, available nitrogen, phosphorus, potassium, and micro-

    B-1016R p. 1

  • Nitrogen recommendations are more reliable when based on available nitrogen (nitrate-N) to a depth of 12 inches.

    B-1016R p. 1

  • Divide each core into two 6-inch sections, placing all top sections into one container and all bottom sections into another

    B-1016R p. 1

  • If tillage operations thoroughly mix soil to a depth of one foot, it is not necessary to separate the surface and subsurface layers.

    B-1016R p. 1

Cores

  • A typical sampling approach is to extract a 12-inch soil core from 15 to 20 random locations within a 20- to 40-acre field.

    B-1016R p. 1

Sources

Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.

Združene države: zvezna pravila in pravila vseh drugih držav

Predpisi o vzorčenju tal v vsaki državi

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