Free Nutrients Calculators

10 tools

Nutrient management and application calculators. Browse our free nutrients tools below — no sign-up required.

Estimate nitrogen fixed by legume cover crops based on biomass production. Calculate N credits for the following cash crop.

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Estimate nitrogen credit from green manure legume crops based on species, biomass, and termination timing. Free N credit estimator.

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Calculate micronutrient product application rate from deficiency level, correction factor, and product analysis. Free micro rate tool.

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Calculate nitrogen fertilizer application rate based on yield goal and nitrogen factor minus credits.

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Estimate nitrogen mineralization rate from soil organic matter, temperature, and moisture. Calculate seasonal N supply from soil biology.

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Calculate N, P₂O₅, and K₂O removed by harvested crops based on yield and crop-specific nutrient content. Plan maintenance fertilization.

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Calculate phosphorus (P₂O₅) fertilizer need based on soil test results, yield goal, and crop removal rates.

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Calculate potassium (K₂O) fertilizer need from soil test K, yield goal, crop removal, and CEC. Free K rate recommendation tool.

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Calculate residual nitrogen credit from the previous crop. Estimate carryover N from legumes, excess fertilizer, and manure history.

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Calculate elemental sulfur application rate to lower soil pH based on current pH, target pH, and soil texture. Free S rate tool.

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