The Nitrogen and Potassium Prediction Model is now live on the Fruit and Nut Research and Information Center’s website! This robust tool will help growers determine the recommended amount of nitrogen and potassium needed to maximize productivity for pistachio trees. The tool allows users to predict their pistachio trees’ nitrogen & pistachio demand before the season begins. Users can also input leaf test results, if available, to increase the accuracy of their mid-season update.