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Nutrient Management

In the agricultural setting, nutrients are the building blocks for plant growth and production. Common nutrients are the elements nitrogen and phosphorus which are available in several forms. NRCS works with Alaska farmers to manage nutrients.

Nutrient management is the matching of the site specific soil, production history and crop management to the “Right Rate”, “Right Source”, “Right Time” and “Right Place” (commonly known as the 4R nutrient stewardship) of nutrient applications. The NRCS nutrient management plans are designed to document practices that address natural resource concerns related to soil erosion, water quality and nutrient applications.  For more information about NRCS nutrient management activities go to NRCS Nutrient Management.

The 590 practice includes development of a nutrient budget for nitrogen, phosphorus and potassium for each crop grown in the crop rotation. The nutrient budget will include all applied and residual nutrients. Soil tests and manure test results will be used to develop site-specific nutrient recommendations. The Phosphorus Index (P-Index) will be used, when required, to identify areas of potential for P loss to the environment and to develop appropriate tactics to reduce the risk.

Comprehensive Nutrient Management Plans (CNMPs) are conservation plans unique to livestock operations. These plans document practices and strategies adopted by livestock operations to address natural resource concerns related to soil erosion, livestock manure and disposal of organic by-products.  The development of a CNMP follows the National Planning Procedures Handbook (NPPH) 180-600H.

4R Nutrient Stewardship
4R Nutrient Stewardship Home Page
4Rs Right for Nutrient Stewardship (Iowa NRCS website)


Nutrient Management Resources
The Nitrogen Cycle (PDF) - Graphic Illustration
USDA Crop Nutrient Removal Tool

Contact:
Dr. Craig Smith, Agronomist
Phone: 907-373-6492 ext. 108
Email: Craig.Smith2@ak.usda.gov

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