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The Wisconsin Soil Test Recommendation Program. UWEX Publication A2809: Nutrient Application Guidelines for Field, Vegetable, and Fruit Crops in Wisconsin. A2809 – “The Bible”. Incorporates over 80 years of research The official recommendations for NRCS 590 NMP - PowerPoint PPT Presentation
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The Wisconsin Soil Test Recommendation
Program
UWEX Publication A2809:
Nutrient Application Guidelines for Field,
Vegetable, and Fruit Crops in Wisconsin
A2809 – “The Bible”
• Incorporates over 80 years of research
• The official recommendations for NRCS 590 NMP
• Supported by UW Soil Science Department
• Two state-run labs
• Uses local calibration
• Continuously updated
• Revised in 2006
Philosophy of the Wisconsin Soil Test
Recommendation Program• Establishes Soil Sampling and
Testing Methods• Interprets Fertilizer and Lime
Needs• Wide Range of Field Crops and
Soils• Uses a Sufficiency Approach
– Index of available nutrients– Degree of sufficiency for specific crops– Provide recommendation to correct– Allows economic and informed
decision
Soil Sampling Method for Single-Rate Nutrient
Application
UW Soil Testing Methods
Soil Groups
MRTN Guidelines for Corn
Soil Test Categories for P and K
P and K Fertilization Guidelines
Sulfur Availability Index● Soil test S● Subsoil S● Precipitation● Organic matter● Manure history
Soil pH Management
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