Zahteve za vzorčenje tal v Ohiu

Q: Koliko hektarjev lahko pokrije en vzorec tal v Ohiu?

Podaljšek državne univerze Ohio, informativni listi Ohioline (uradna navodila): Vzorčno območje ni na voljo nad 25 akrov (10,12 ha). Možnost mreže: ena točka na 2,5 akrov (360 x 360 čevljev).

Q: Kako globoko je treba odvzeti vzorce tal v Ohiu?

Podaljšek državne univerze Ohio, informativni listi Ohioline (uradna navodila): 8 palcev (20,32 cm), globina, na katero je umerjena večina testov tal. Brez oranja: vzorec od 0 do 2 palcev (0 do 5,08 cm) za pH lahko pomaga.

Q: Koliko jeder gre v en vzorec tal v Ohiu?

Podaljšek državne univerze Ohio, informativni listi Ohioline (uradna navodila): Vsaj 15 jeder na kompozit z ali manj kot 25 hektarjev; 20 do 25 po gnojenju v pasovih. Cone: 10 do 15 jeder. Mrežne točke: 8 jeder znotraj 3-metrskega kroga.

Q: Koliko vzorcev tal potrebuje 100-akrsko polje v Ohiu?

V skladu z razširitveno službo Univerze Ohio State, informativni listi Ohioline: Za enotno 100-akrsko polje so potrebni vsaj 4 sestavljeni vzorci, vsak ne večji od 25 akrov, in vsaj 60 jeder skupaj, 15 na vzorec.

Državne smernice: Podaljšanje državne univerze Ohio, informativni listi Ohioline.

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

Koliko hektarjev lahko pokrije en vzorec tal v Ohiu?

Ohio State University Extension, Ohioline fact sheets Official guidance No sample zone over 25 acres (10.12 ha). Grid option: one point per 2.5 acres (360 by 360 feet).

Kako globoko je treba odvzeti vzorce tal v Ohiu?

Ohio State University Extension, Ohioline fact sheets Official guidance 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.

Koliko jeder gre v en vzorec tal v Ohiu?

Ohio State University Extension, Ohioline fact sheets Official guidance 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.

Koliko vzorcev tal potrebuje 100-akrsko polje v Ohiu?

Ohio State University Extension, Ohioline fact sheets: Za enotno 40-akrsko polje so potrebni vsaj 4 sestavljeni vzorci, vsak s površino največ 11 hektarjev, in vsaj 60 jeder skupaj, 15 na vzorec.

Vzorci in jedra za polja vseh velikosti

Soil sampling rules in Ohio, with the exact wording of each source
Country / region	Purpose / programme	Time / frequency	Area per sample	Method	Depth	Cores	Status and source
United States
OhioUnited StatesOhio only. Other states set their own rules.	Soil sampling to develop nutrient recommendationsOhio State University Extension, Ohioline fact sheets	Not specified	No sample zone over 25 acres (10.12 ha). Grid option: one point per 2.5 acres (360 by 360 feet).	Systematic grid sampling, or management zones from yield maps, management history and other data; zigzag through each zone. Georeferenced points help track trends.	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.	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.	Official guidanceOhioline AGF-513, Soil Sampling to Develop Nutrient Recommendations
Who it applies to, the exact wording and every source Who it applies to Advice for Ohio fields from Ohio State University Extension. Not law. Laboratory and analysis Ask whether the lab follows Recommended Chemical Soil Test Procedures for the North Central Region. In force from Under review Legal text Ohio State University Extension, Soil Sampling to Develop Nutrient Recommendations (AGF-513, 2012) The wording in the source Area per sample Even after careful consideration to the field landscape and variability, no individual sample zone should represent more than 25 acres. AGF-513, Taking a Representative Soil Test A 360 X 360 foot grid results in a systematic sampling pattern for each 2.5 acres in a field. AGF-513, Systematic Grid Sampling Method Systematic grid sampling and zone management are the two primary methods of dividing field areas for soil sampling using precision applications (Table 2). AGF-513, Soil Sampling with Precision Agriculture Follow a zigzag pattern over the sample area when zone sampling (Figure 2). AGF-513, Taking the Soil Cores Georeferenced sample points may give a better opportunity to compare sample trends over time by returning to near the same point in future years. AGF-513, Zone Management Depth Most soil tests are calibrated using an 8-inch sampling depth, which corresponds to the plow depth. Management in no-till systems may benefit from a 0–2 inch sample for pH, especially where pH-sensitive herbicides are used. AGF-513, Taking the Soil Cores Cores For a standard soil sample, take at least 15 sample cores from each field area of 25 acres or less into one composite sample. AGF-513, Taking the Soil Cores If the field has a history of banded fertilizer applications, increase the number of samples to 20–25 cores. AGF-513, Taking the Soil Cores Sample points should be taken randomly with 10–15 cores per sample area of up to 25 acres. AGF-513, Zone Management Soil samples are collected at each sample point within a 10-foot diameter circle, with two cores pulled from each quadrant, for a total of eight cores. AGF-513, Systematic Grid Sampling Laboratory and analysis Standards for laboratory procedure and extraction solutions have been established by land-grant universities in the publication Recommended Chemical Soil Test Procedures for the North Central Region. It is a good practice to ask if the laboratory utilizes these procedures in their analysis process. AGF-513, Sending the Sample to the Testing Lab Sources Ohioline AGF-513, Soil Sampling to Develop Nutrient Recommendations Guidance Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.

Združene države: zvezna pravila in pravila vseh drugih držav

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Zahteve za vzorčenje tal v Ohiu

Zahteve za vzorčenje tal v Ohiu

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

Koliko hektarjev lahko pokrije en vzorec tal v Ohiu?

Kako globoko je treba odvzeti vzorce tal v Ohiu?

Koliko jeder gre v en vzorec tal v Ohiu?

Koliko vzorcev tal potrebuje 100-akrsko polje v Ohiu?

The wording in the source

Area per sample

Method

Depth

Cores

Laboratory and analysis

Sources

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