Zahteve za vzorčenje tal v Oregonu
Državne smernice: Nasveti za vzorčenje, ki jih je izdala razširitvena služba Državne univerze Oregon.
| 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 |
| Not specified | A 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 area | Official guidanceOregon State University Extension, EC 628 (PDF) |
Who it applies to, the exact wording and every source
The wording in the sourceTiming
Method
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SourcesSources 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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