NovoIzdaja oktobra 2026: Preoblikovanje sinhronizacije John Deere, omejitve minimalne in maksimalne hitrosti, območja poročil o donosu

Zahteve za vzorčenje tal v Severni Dakoti

Zahteve za vzorčenje tal v Severni Dakoti

Državne smernice: Nasvet za vzorčenje NDSU Extension.

Vzorčenje tal v Severni Dakoti: pogostost, površina, globina in vzorci

Kdaj v letu je treba vzorčiti zemljo v Severni Dakoti?

Koliko hektarjev lahko pokrije en vzorec tal v Severni Dakoti?

  • NDSU Extension sampling advice Official guidance Where grid sampling is used: one sample per acre (0.40 ha). Coarser grids, such as one sample per 2.5 acres, are inadequate in North Dakota. The guide sets no area for zone samples.

Kako globoko je treba odvzeti vzorce tal v Severni Dakoti?

  • NDSU Extension sampling advice Official guidance 0 to 6 inches (0 to 15.24 cm) for pH, P, K, Zn, Cu, Mn. 0 to 2 feet (0 to 60.96 cm) for nitrate-N and chloride, best split at 6 inches. No-till: 0 to 2 inches (0 to 5.08 cm) separately from 2 to 6 inches.

Koliko jeder gre v en vzorec tal v Severni Dakoti?

Koliko vzorcev tal potrebuje 100-akrsko polje v Severni Dakoti?

NDSU Extension sampling advice: Za enotno 40-akrsko polje je potrebnih vsaj 100 sestavljenih vzorcev, ki ne presegajo 1 akrov vsak, in vsaj 800 jeder skupaj, 8 na vzorec.

Vzorci in jedra za polja vseh velikosti

Soil sampling rules in North Dakota, with the exact wording of each source
Country / region Purpose / programme Time / frequency Area per sample Method Depth Cores Status and source
United States
North DakotaUnited StatesNorth Dakota only. Other states set their own rules.Soil sampling for fertilizer recommendations, including nitrateNDSU Extension sampling advice
  • Season Nitrate samples may be taken right after any grain harvest. Sample for K at the same time each year.
Where grid sampling is used: one sample per acre (0.40 ha). Coarser grids, such as one sample per 2.5 acres, are inadequate in North Dakota. The guide sets no area for zone samples.Zone sampling, with zones built from at least two tools such as crop canopy imagery, soil EC sensors, multiyear yield maps and elevation. A systematic unaligned grid only in areas with large manure applications or fields with large P and K buildup applications.0 to 6 inches (0 to 15.24 cm) for pH, P, K, Zn, Cu, Mn. 0 to 2 feet (0 to 60.96 cm) for nitrate-N and chloride, best split at 6 inches. No-till: 0 to 2 inches (0 to 5.08 cm) separately from 2 to 6 inches.Eight to 10 cores at random within each zoneOfficial guidanceNDSU Extension, SF990 Soil Sampling as a Basis for Fertilizer Application
Who it applies to, the exact wording and every source
Who it applies to
Advice for North Dakota fields from North Dakota State University Extension. Not law.
In force from
Under review
Legal text
NDSU Extension, Soil Sampling as a Basis for Fertilizer Application (SF990, revised September 2023)

The wording in the source

Timing

Area per sample

Method

  • Grid sampling is recommended in North Dakota only in areas with large manure applications or in fields that have received large amounts of buildup P and K fertilizers.

    SF990, Sampling for Within-field Soil Test Values

  • Zones should be developed using at least two tools (Franzen et al., 2011).

    SF990, Zone Sampling

  • Aerial imagery from piloted aircraft or drones … satellite imagery of growing crops … soil electrical conductivity sensors … multiyear yield maps … topography developed from subinch accuracy GPS elevation … may be used to help develop zones for use in soil sampling.

    SF990, Zone Sampling

  • The pattern of grid sampling should be a systematic, unaligned grid as illustrated in Figure 7.

    SF990, Sampling for Within-field Soil Test Values

Depth

  • For soil pH, P, K, Zn, copper (Cu) and manganese (Mn), sampling the 0- to 6-inch depth is required because that is the depth of sampling related to crop response in this region.

    SF990, Depth of Sampling, Nutrients

  • For soil nitrate-N and chloride, a 0- to 2-foot core is required. Instead of analyzing just one 0- to 2-foot core, dividing the core into a 0- to 6-inch core and a 6- to 24-inch core, and analyzing each one separately would be instructive.

    SF990, Depth of Sampling, Nutrients

  • Therefore, in fields under no-till systems, the 0- to 2-inch depth should be separated and analyzed separately for soil pH, P and K in addition to analyzing soil at the 2- to 6-inch depth.

    SF990, Tillage System

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

Prijavi zastarelo zahtevo: info@geopard.tech

Načrtujte točke glede na pravilo, ki velja

Nastavite površino na vzorec, jedra in globino, ki jo zahteva vaše pravilo. GeoPard postavi točke na mrežo ali po conah, določi pot sprehoda, natisne oznake in načrt odnese na teren s telefonom.

Ustvarite načrt vzorčenja Oglejte si načrtovalec vzorčenja tal

Referenčni priročnik za načrtovanje, zgrajen na podlagi uradnih virov, ne pravnega nasveta. Veljajo pravila glede na jurisdikcijo, hranila, rabo zemljišč in program: pred terenskim delom preverite trenutno uradno besedilo in navodila svojega laboratorija.

wpChatIcon
wpChatIcon

    Zahtevaj brezplačno GeoPard predstavitev / posvet

    Zdravo








    S klikom na gumb soglašate z našimi Pravilnik o zasebnosti. Potrebujemo ga za odgovor na vašo zahtevo.

      Naročite se na


      S klikom na gumb soglašate z našimi Pravilnik o zasebnosti

        Pošljite nam informacije


        S klikom na gumb soglašate z našimi Pravilnik o zasebnosti

        Uporabljamo piškotke, da vam zagotovimo najboljšo možno uporabniško izkušnjo, prilagodimo vsebino naše spletne strani, analiziramo njen promet in vam prikazujemo ustrezne oglase.
        Poglejte naše Politika zasebnosti za več informacij.

        Sprejmi vse