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Zahteve za vzorčenje tal v Oregonu

Zahteve za vzorčenje tal v Oregonu

Državne smernice: Nasveti za vzorčenje, ki jih je izdala razširitvena služba Državne univerze Oregon.

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

Kako pogosto je treba v Oregonu vzorčiti zemljo?

Kdaj v letu je treba vzorčiti zemljo v Oregonu?

Kako globoko je treba odvzeti vzorce tal v Oregonu?

Koliko jeder gre v en vzorec tal v Oregonu?

Soil sampling rules in Oregon, with the exact wording of each source
Country / region Purpose / programme Time / frequency Area per sample Method Depth Cores Status and source
United States
OregonUnited StatesOregon only. Other states set their own rules.Routine soil fertility sampling for farms and gardensOregon State University Extension sampling advice
  • Repeat 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.
  • Season Same time of year each time. Western Oregon high-rainfall soils: late summer or fall. Perennial crops: before planting.
Not specifiedA separate sample for each area that differs in soil type, topography, crop or management history. Avoid unusual spots.Surface to about 6 inches (15.24 cm), or to the depth of tillage. Keep the same depth for all future samples.15 to 20 subsamples per sampling areaOfficial guidanceOregon State University Extension, EC 628 (PDF)
Who it applies to, the exact wording and every source
Who it applies to
Advice for Oregon farms and gardens from Oregon State University Extension. Not law.
In force from
Under review
Legal text
Oregon State University Extension, A Guide to Collecting Soil Samples for Farms and Gardens (EC 628, revised November 2022)

The wording in the source

Timing

Method

  • The area from which to collect a soil sample may depend on the soil type, topography, crops grown, management history, or all of the above.

    EC 628, Where should I collect a soil sample?

  • Avoid sampling in small areas where you know that conditions are different from the rest of the field (for example, former manure piles, fertilizer bands, or fence lines).

    EC 628, Avoid unusual areas

Depth

Cores

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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