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Soil Management and Fertility
Soil-Test Results Summaries 2006-2010
Antonio Mallarino, Brian E. Hill, Kerry L. Culp
The Iowa State University Soil Testing and Plant Analysis Laboratory received soil samples submitted by Iowa farmers from different counties statewide during January 2006 to December 2010.
Select soil-test results are summarized by county for phosphorus (P), potassium (K), zinc (Zn) and acidity levels (pH).
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A General Guide for Crop Nutrient and Limestone Recommendations in Iowa
Interpretation of Soil Test Results
Take a Good Soil Sample to Help Make Good Fertilization Decisions
Soil Sampling for Variable Rate Fertilizer and Lime Application
Nutrient Deficiencies and Application Injuries in Field Crops -- Integrated Pest Management
Building Soil Health
Iowa Soil Health Management Manual
Iowa: Many Rivers Run Through It -- Poster
Phosphorus and Potassium Tissue Testing in Corn and Soybean
Micronutrients for Soybean Production in the North Central Region
Iowa Soil Health Assessment Card
Nitrogen Use in Iowa Corn Production
Effectiveness of Gypsum in the North-central Region of the U.S.
Concepts and Rationale for Regional Nitrogen Rate Guidelines for Corn
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