1. Linking Soil Properties and Weather Variability to Nitrogen Fertilizer Needs

Soil Nitrogen (N) availability is known to be affected by weather and soil characteristics. Current fertilizer recommendations are generally based on yield goals, soil type, and past productivity; however, these methods frequently fail to account for the constantly changing interactions between soil biological, chemical, physical and weather variables that influence N availability. This limitation increases uncertainty in estimating the economic optimum nitrogen rate (EONR), potentially reducing... S. Dangal, J. Clark, P. Kovacs, V. Nunes, C. Graham