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Nutrient Management

Local Resources

These organizations and agencies are sources of relevant data and tables for developing sound nutrient management plans and guidance concerning application rates of manure.

• Cooperative Extension Service
• Local Soil and Water Conservation District
• State land-grant institution
• State regulatory body for confined animal/manure management
• State Department of Agriculture
• State office of USDA-NRCS
• Links to State Specific Nutrient Management Resources

Educational Resources

• Midwest Plan Service-Publication 18 Livestock Waste Facilities Handbook
• Livestock and poultry Environmental Stewardship Curriculum Lesson 31 Manure Utilization Plans
• USDA-NRCS Nutrient Management Standard Standard 590
• USDA-NRCS Waste Utilization Standard Standard 633
• USDA-NRCS Agricultural Waste Management Field Handbook Chapter 4 Ag Waste Characteristics

Recommended Reading About Manure Nutrient Mangement

These websites offer some of the above information and links to local sources of nutrient management and waste management information. You are encouraged to check with your state land grant institution or Cooperative Extension Service for information related to your specific state.

• Penn State University Agronomy Guide 2007-2008 Soil Fertility Management:Manure Nutrient Management. This site offers many tables for nutrient availability factors as determined by animal type and manure application method, with references to residual N availability.
• Kansas State University Dep artment of Agronomy –Estimating Manure Nutrient Availability. This site offers tables and an example calculation worksheet for manure nutrient availability.
• North Carolina State University waste operators certification manual. This site helps farm managers understand the nutrient management plan and the importance of frequent monitoring to assure the plan is working.
• North Carolina State University nutrient management website. This site links the user to specialists in the nutrient management field, as well as tools for plan development.
• University of Wisconsin – Nutrient Availability from Treated Manures. This article provides formulas to assess nutrient availability as a function of application method.
• University of Nebraska NebGuide, Determining Crop Available Nutrients from Manure, (PDF Version). These sites offer tables for nutrient availability factors as determined by animal type and manure application method, with examples and worksheets for reference. They also address plan monitoring tools.
• Iowa State University- Managing Manure Nutrients for Crop Production. This is an extensive publication that addresses manure nutrient availability for planning as well as managing manure nutrients for the producer.
• Purdue University Agronomy Guide-Calculating Manure and Manure Nutrient Application Rates and Manure Nutrient Availability Calculator. These sites offer tables for nutrient availability factors as determined by animal type and manure application method, with examples and worksheets for reference.
• Oklahoma State University – Fertilizer Nutrients in Animal Manure. This document discusses general considerations for determining manure nutrients, and availability based on application method.
• US-EPA - Using Manure as a Fertilizer for Crop Production. This article discusses regional similarities and differences in manure nutrient availability, with a discussion on some of the research involved and future research needs.
• USDA-NRCS Home page. Site to access NRCS standards, including waste utilization standard 633.
• USDA-NRCS Nutrient Management Technical Guidance. Site to access nutrient planning tools used by NRCS and their cooperating technical assistance sister agencies.
• Nutrients Available from Livestock Manure Relative to Crop Growth Requirements and Specific data for various localities for determining manure nutrient availability.
• Webcast on Nitrogen Availability from Organic Sources by Dan Sullivan, Oregon State University.

Page developed by: Karl Shafer, North Carolina State University