What is the Corn Nitrogen Rate Calculator?
The Corn Nitrogen Rate Calculator Web tool is a resource that aids N rate decisions for corn production and is helpful in determining the effect of fertilizer and corn price on application rates. The method for calculating suggested N rates is based on a regional (Corn Belt) approach to N rate guidelines. Details on the approach are provided in the regional publication Concepts and Rationale for Regional Nitrogen Rate Guidelines for Corn. This approach and the Corn Nitrogen Rate Calculator are now being used by seven Corn Belt states: Iowa, Illinois, Indiana, Michigan, Minnesota, Ohio, and Wisconsin; with Michigan and Ohio being added this year. Resources for N Rate Decisions The Corn Nitrogen Rate Calculator Web tool is located at http://extension.agron.iastate.edu/soilfertility/nrate.aspx. The regional publication Regional Nitrogen Rate Guidelines for Corn, PM 2015, can be ordered through any ISU extension county office, on the Web through the extension online store , or by calling (
