ISU Agronomy Department Extension

Corn Nitrogen Rate Calculator
Finding the Maximum Return To N and Most Profitable N Rate
A Regional (Corn Belt) Approach to Nitrogen Rate Guidelines

This web site provides a process to calculate economic return to N application with different nitrogen and corn prices and to find profitable N rates directly from recent N rate research data. The method used follows a newly developed regional approach for determining corn N rate guidelines that is being implemented in several Corn Belt states.

Regional Corn N Rate Publication

Choose state  Choose rotation pattern(s)

Set corn and nitrogen prices
Nitrogen price ($/lb N)
Corn price ($/bu)

Illinois Map How to Use More Info

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Agronomy Extension - 2104 Agronomy Hall, Ames, IA 50011. Phone: 515.294.1923 Fax: 515.294.9985
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