1. Precisely Monitoring Nitrogen Requirements for Winter Wheat and Spring Barley Based on Crop Yield Predictions, Remote Sensing Imagery and Soil Texture Maps

The timely and precise evaluation of crop nitrogen demand is crucial for maximizing farmers' contribution margin while simultaneously minimizing nitrogen fertilization. Sufficient nitrogen fertilizer has to be provided for adequate crop growth, yet fertilization should not be excessive to ensure its environmental impact is minimized. A variety of factors determine nitrogen demands as well as crop yield, including weather, topography and soil texture. These factors vary spatially, meaning that... N. Hollain, S. Wang, B. Feld Mikkelsen,