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Krav på jordprovtagning i New Mexico

Krav på jordprovtagning i New Mexico

Statliga regler: 20.6.6 NMAC, Grundvattenskydd: Kompletterande tillståndskrav för mejerianläggningar. Statliga riktlinjer: Råd om provtagning från NMSU Cooperative Extension.

Jordprovtagning i New Mexico: frekvens, area, djup och kärnprovtagning

Hur ofta behöver man ta jordprover i New Mexico?

När på året bör jordprover tas i New Mexico?

Hur många hektar kan ett jordprov täcka i New Mexico?

Hur djupt bör jordprover tas i New Mexico?

Hur många kärnor går det till ett jordprov i New Mexico?

Hur många jordprover behövs för ett 40 hektar stort fält i New Mexico?

NMSU Cooperative Extension sampling advice: Ett enhetligt fält på 100 hektar behöver minst fyra sammansatta prover på högst 25 hektar vardera, och minst 40 kärnor totalt, 10 per prov.

Prover och kärnor för alla fältstorlekar

Soil sampling rules in New Mexico, with the exact wording of each source
Country / region Purpose / programme Time / frequency Area per sample Method Depth Cores Status and source
United States
New MexicoUnited StatesNew Mexico only. Other states set their own rules.Annual soil sampling of dairy land application fieldsGround water protection, supplemental permitting requirements for dairy facilities (Dairy Rule)
  • Repeat Annually on every field that has received wastewater or stormwater, cropped or fallow
  • Season Before the first wastewater application on a new field; an initial event on every field in the first year of each permit term
Not specifiedOne composite per field from cores taken at random throughout the field; a separate composite for each soil texture.Three composites per field: 0 to 12 inches (0 to 30.48 cm), 12 to 24 inches (30.48 to 60.96 cm) and 24 to 36 inches (60.96 to 91.44 cm)15 cores per compositeConditional20.6.6 NMAC (New Mexico Administrative Code)
Who it applies to, the exact wording and every source
Who it applies to
Dairy facilities with a discharge permit and a land application area: every field that has received or is receiving wastewater or stormwater, and every field in the first year of each permit term.
Laboratory and analysis
pH, EC, sodium, calcium and magnesium on a saturated paste extract; phosphorus by Olsen sodium bicarbonate; nitrate by 2 molar KCl extract; methods under 20.6.6.24 NMAC.
Field identifiers
A map showing the fields and the sampling locations within each field, submitted with the results.
In force from
16 June 2015
Legal text
20.6.6 NMAC, Ground Water Protection: Supplemental Permitting Requirements for Dairy Facilities, 20.6.6.25 NMAC, Subsections K and L

The wording in the source

Timing

  • Beginning in the year following the initial soil sampling required by this section, the permittee shall collect annual soil samples from each field within the land application area that has received or is actively receiving wastewater or stormwater.

    20.6.6.25.L NMAC

  • For those fields that have never before received wastewater, the permittee shall collect soil samples immediately before initial wastewater application and annually thereafter.

    20.6.6.25.L NMAC

  • Once a field has received wastewater it shall be sampled annually regardless of whether the field is cropped, remains fallow, or has recently received wastewater or stormwater.

    20.6.6.25.L NMAC

  • A permittee shall collect composite soil samples from each field within the land application area for the first soil sampling event during the first year following the effective date of the discharge permit.

    20.6.6.25.K NMAC

Method

  • Each surface and sub-surface soil sample shall consist of a single composite of 15 soil cores collected randomly throughout each field. Should a field consist of different soil textures (i.e., sandy and silty clay), a composite soil sample shall be collected from each soil texture within each field.

    20.6.6.25.L(1) NMAC

Depth

  • One surface composite soil sample (first-foot) and two sub-surface composite soil samples (second-foot and third-foot) shall be collected from each field.

    20.6.6.25.L NMAC

  • Surface soil samples (first-foot) shall be collected from a depth of 0 to 12 inches.

    20.6.6.25.L(2) NMAC

  • Each second-foot sub-surface soil sample shall be collected from a depth of 12 to 24 inches.

    20.6.6.25.L(3) NMAC

  • Each third-foot sub-surface soil sample shall be collected from a depth of 24 to 36 inches.

    20.6.6.25.L(4) NMAC

Cores

  • Each surface and sub-surface soil sample shall consist of a single composite of 15 soil cores collected randomly throughout each field.

    20.6.6.25.L(1) NMAC

Who it applies to

  • ADDITIONAL MONITORING REQUIREMENTS FOR DAIRY FACILITIES WITH A LAND APPLICATION AREA:

    20.6.6.25 NMAC, heading

  • Beginning in the year following the initial soil sampling required by this section, the permittee shall collect annual soil samples from each field within the land application area that has received or is actively receiving wastewater or stormwater.

    20.6.6.25.L NMAC

Laboratory and analysis

  • pH, electrical conductivity, sodium, calcium, and magnesium shall be analyzed using a saturated paste extract in accordance with the analytical methodology required by Subsection B of 20.6.6.24 NMAC. Phosphorus shall be analyzed using the Olsen sodium bicarbonate method

    20.6.6.25.L(7) NMAC

  • Nitrate as nitrogen shall be analyzed by a 2 molar KCl extract

    20.6.6.25.L(7) NMAC

Field identifiers

  • The permittee shall submit the analytical results and a map showing the fields and the sampling locations within each field to the department in the monitoring report due by May 1.

    20.6.6.25.L(8) NMAC

In force

Sources

Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.
New MexicoUnited StatesNew Mexico only. Other states set their own rules.Routine soil fertility samplingNMSU Cooperative Extension sampling advice
  • Repeat Every year before the crop season; at least every other year
Divide crop fields larger than 25 acres (10.12 ha) into separate sampling sectionsOne sample per management zone: an area treated the same for water, fertilizer and yield potential. Divide by yield history, slope, weed pressure and soil type.Untilled ground (direct-seeded fields, orchards, vineyards): 6 to 8 inches (15.24 to 20.32 cm). Tilled fields: 12 inches (30.48 cm).10 to 15 subsamples from the same depth per sampleOfficial guidanceNMSU Guide A-146, Recommended Analyses for New Mexico Soils
Who it applies to, the exact wording and every source
Who it applies to
Advice for New Mexico farms from New Mexico State University Cooperative Extension. Not law.
Laboratory and analysis
Labs in the North American Proficiency Testing Program are suggested. For New Mexico soils, pH on the saturated paste.
In force from
Under review
Legal text
New Mexico State University, Guide A-146, Recommended Analyses for New Mexico Soils

The wording in the source

Timing

  • It is recommended to test your soil every year before the crop season to assess its chemical and nutrient status. If that is not possible, then at least every other year.

    Guide A-146, Introduction

Area per sample

Method

Depth

  • Areas that are not tilled, such as direct-seeded fields, orchards, vineyards, turfgrass, and perennial gardens, should be sampled to a depth of 6 to 8 inches. Any area that has been tilled, such as annual gardens, conventionally tilled production fields, or similar areas, should be sampled to a depth of 12 inches.

    Guide A-146, Collecting a Sample from the Field

Cores

Laboratory and analysis

Sources

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

USA: federala regler och alla andra delstater

Jordprovtagningsregler i alla länder

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