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Augsnes paraugu ņemšanas prasības Nevadas štatā

Augsnes paraugu ņemšanas prasības Nevadas štatā

Valsts vadlīnijas: Nevadas Universitātes Reno paplašinājuma paraugu ņemšanas ieteikumi.

Augsnes paraugu ņemšana Nevadas štatā: biežums, platība, dziļums un serdeņi

Cik bieži Nevadas štatā ir jāņem augsnes paraugi?

  • University of Nevada, Reno Extension sampling advice Official guidance Every 2 to 3 years for most crops. Before each crop for high-value cash crops. Sandy soils every 2 to 3 years, clay soils every 3 to 4 years. Every year where earlier tests showed levels too high or too low.

Kad gada laikā Nevadas štatā jāņem augsnes paraugi?

Cik dziļi Nevadas štatā jāņem augsnes paraugi?

  • University of Nevada, Reno Extension sampling advice Official guidance 15 cm (6 inches) for shallow-rooted crops, 30 cm (12 inches) for deep-rooted crops. In some cases on light-textured soils where nutrients leach, separate deeper samples from 15 to 60 cm (6 to 24 inches) for available nitrogen and sulfur.

Cik kodolu tiek ņemti vienā augsnes paraugā Nevadas štatā?

Soil sampling rules in Nevada, with the exact wording of each source
Country / region Purpose / programme Time / frequency Area per sample Method Depth Cores Status and source
United States
NevadaUnited StatesNevada only. Other states set their own rules.Routine soil fertility samplingUniversity of Nevada, Reno Extension sampling advice
  • Repeat Every 2 to 3 years for most crops. Before each crop for high-value cash crops. Sandy soils every 2 to 3 years, clay soils every 3 to 4 years. Every year where earlier tests showed levels too high or too low.
  • Season After harvest and before planting the next crop, around the same month each year
  • Wait Avoid sampling soon after fertilizer or manure applications
Not specifiedDivide the field into similar units by soil, slope, drainage, erosion and history. Random cores in a zigzag pattern in each unit; a simple random pattern on uniform fields.15 cm (6 inches) for shallow-rooted crops, 30 cm (12 inches) for deep-rooted crops. In some cases on light-textured soils where nutrients leach, separate deeper samples from 15 to 60 cm (6 to 24 inches) for available nitrogen and sulfur.Two or three cores per acre in each unit. At least 15 to 20 cores on uniform fields.Official guidanceUniversity of Nevada, Reno Extension, FS-19-17
Who it applies to, the exact wording and every source
Who it applies to
Advice for Nevada growers from the University of Nevada, Reno Extension. Not law.
In force from
Under review
Legal text
University of Nevada, Reno Extension, Know the Status of Your Soils Before You Plant (FS-19-17)

The wording in the source

Timing

Method

  • Soil samples should be collected by dividing the field into similar units or blocks based upon differences in the soil. These differences could be in color, soil types, slope, drainage, degree of erosion, prior management, different crop or manure history, etc.

    FS-19-17, Soil sample collection

  • For uniform fields, a simple random pattern across the field should be used to collect at least 15 to 20 soil cores to equal depths.

    FS-19-17, Soil sample collection

Depth

  • Then, dig down to a plough depth of 15 cm (6 inches) for shallow-rooted crops and 30 cm (12 inches) for deep-rooted crops (Figure 5).

    FS-19-17, Basic steps

  • in light-texture soils, where excessive leaching of nutrients occurs, separate deeper samples, down to 15-60 cm (6-24 inches), should be collected and analyzed to determine available nitrogen and sulfur in some cases

    FS-19-17, Basic steps

Cores

  • Several random samples should be collected from each area of each unit or block (two or three subsamples per acre) in a zigzag pattern (Figure 4).

    FS-19-17, Soil sample collection

  • For uniform fields, a simple random pattern across the field should be used to collect at least 15 to 20 soil cores to equal depths.

    FS-19-17, Soil sample collection

Sources

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

Amerikas Savienotās Valstis: federālie noteikumi un visi pārējie štati

Augsnes paraugu ņemšanas noteikumi katrā valstī

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