Nitrogen Rate Calculator
Estimate nitrogen fertilizer application rate based on yield goal and nitrogen factor.
Inputs
How It Works
Nitrogen Rate (lbs N/acre) =
(Yield Goal × Nitrogen Factor) − Nitrogen Credits
Credits may include manure, legumes, or residual N.
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FAQ
What is a nitrogen factor?
A nitrogen factor estimates pounds of nitrogen required per bushel of yield.
What are nitrogen credits?
Credits include nitrogen from manure, legumes, or residual soil nitrate.
Should nitrogen always match yield goal?
Rates should consider economic return and environmental conditions.
Understanding Nitrogen Fertilizer Rates
Nitrogen is one of the most yield-limiting nutrients in crop production. Proper nitrogen management supports plant growth, protein formation, and overall crop performance. Applying too little nitrogen can limit yield potential, while excessive application increases input costs and environmental risk.
This nitrogen rate calculator estimates required nitrogen based on yield goals and a nitrogen factor, which represents pounds of nitrogen required per bushel. Nitrogen credits from previous legumes, manure applications, or residual soil nitrate are subtracted to prevent over-application.
Accurate nitrogen planning improves fertilizer efficiency, enhances profitability, and supports environmentally responsible nutrient management. Always reference soil tests and local agronomic recommendations when determining final nitrogen application rates.