Extension > Crop production > Nutrient Management > Crop Calculators
Crop Calculators
Crop calculators help determine needed nutrients
Alfalfa CalculatorThis tool will aid in the determination of fertilizer needed for alfalfa based on your soil test values. |
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Barley CalculatorThis tool will aid in the determination of fertilizer needed for barley based on your soil test values |
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In Season Corn N Calculator (Now in our App!)Use this simple calculator in early to mid-June to determine if supplemental, or extra, N is needed. |
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Soybean CalculatorThis tool will help you improve your yield by determining how much lime is needed to offset phosphorus and potassium in your soil. |
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Wheat Calculator (Now in our App!)Tool uses past performance and soil tests to improve your next crop. |
Corn Nitrogen Rate Calculator
Iowa State University-Agronomy Extension website calculator uses a newly developed method for determining corn N rate guidelines that is being implemented in several Corn Belt states.
Other Recommended Resources
- Soil testing lab — University of Minnesota
