Nitrogen Calculator

Price: Free

To promote the 4Rs of nutrient stewardship (right source, right rate, right time, right place), the Council on Best Management Practices (CBMP) and the University of Illinois Extension collaborated to develop the Maximum Return to Nitrogen (MRTN) calculator app. 

The app allows a grower or certified crop advisor to take the recommended nitrogen rate for the region, choose from various sources of nitrogen (ammonia, 28 percent or dry), split the applications between fall, pre-plant, and post-applied, add in stabilizers, and calculate the corresponding application costs. A summary of the recommendation can be saved on the smart phone or tablet for future reference.