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Soil Analysis for USDA 590 Nutrient Management Plans

In 2004, the North American Proficiency Testing  (NAPT) Program initiated the Performance Assessment Program (PAP) for soil testing in the Western United States. The purpose of this program is to assess the analytical performance of laboratories conducting soil analysis for USDA 590 Nutrient Management Plans (http://www.nrcs.usda.gov).

In February 2004, twenty-one laboratories enrolled in the NAPT-PAP Program.  Nineteen laboratories have been evaluated, of which fifteen have met the PAP program minimum requirements. 

The University of Idaho Analytical Sciences Laboratory has successfully completed all requirements for NAPT-PAP compliance and is accredited for laboratory analysis in support of NRCS 590 Nutrient Management Plans.  

We now offer the following soil test package for growers participating in the NRCS program: 

Soil Nutrient Management Package (SNMP)

  • pH (saturated paste)

  • Electrical Conductivity (saturated paste)

  • Nitrate (KCl extractable)

  • Ammonium (KCl extractable)

  • Available Phosphorous (Bray or Olsen)

  • Available Potassium (acetate or bicarbonate extractable)

  • Organic Matter (Walkley Black)

If you have any questions regarding soil testing or other laboratory services, please contact Steve McGeehan (208-885-7900) at the UI Analytical Sciences Laboratory.