The Corn Nitrogen Rate Calculator is an interactive computerized decision aid designed to help growers obtain a profit-maximizing nitrogen rate recommendation. The calculator reports the profit-maximizing nitrogen rate, and allows users to adjust corn and nitrogen prices with easy point and click operation. Data used in developing the calculator are from corn nitrogen response trials conducted in West and Middle Tennessee. The calculator can currently be used to predict a profitable nitrogen rate for productive nonirrigated and irrigated fields. Response functions for less productive soils and for corn planted after specific rotational crops will be included as we accumulate the data.

IMPORTANT: You must choose the “Save” option when downloading the Excel file. (If you choose the “Open” option, you will be prompted to save the file before viewing the results).

Note Regarding Security Settings: The decision-aid file contains macros (examples: buttons for printing and moving from the intro page to the calculator) which are required for the calculator to function properly. Security settings for Microsoft Office or Excel may give you warnings when you open the file regarding the safety of enabling the macros. This will especially be true if your security settings are set to high or very high. The macros in the file must be enabled for the calculator to function properly.

This software was developed by personnel from the Agricultural and Resource Economics Production Economics Analysis Group (PEAG) and the West Tennessee Research and Education Center.