Summit’s In-Season Nitrogen Calculator aims to calculate a precise N rate to maximize yield potential of a paddock where a crop is starting to run into N limitations, using NDVI as a real-time growth measurement. It is designed to utilise comparisons between crop growth without N limitations beside paddock practice to determine optimal N application for yield and returns. This trial is part of a series that aims to evaluate the accuracy of the N Calculator’s recommended N rates and predictions of yield in various conditions and crops. The trial was conducted in Moora on sandplain soil. 

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