Farmers can save money and protect the environment by taking credit for the fertilizer value of manure and legume crops. The value of these credits are subtracted from the base (unadjusted) fertilizer recommendations for a field. This reduces the money spent on purchased fertilizer applications and helps prevent over application.
There are formulas and math involved in determining the credit values. This app includes three calculators that have these formulas built in and do all the math for you.
The new NPK Credits app is free and available now. This app was developed by the University of Wisconsin Nutrient and Pest Management Program and uses research from University Extension specialists. For more information and for screen shots, visit the app page on our site.