1. A Classification System for Assessing Applied N Performance in Dryland Wheat Crops of the Inland PNW

Wheat crops in the inland Pacific Northwest demand nitrogen (N) fertilizers at high levels to achieve yield and grain protein objectives. Inefficiencies in N use can accelerate soil acidification, contribute to N2O emissions and result in unnecessary input costs. More precise applications, using wheat performance maps at the field-scale, could lead to increased N use efficiency but requires a multidimensional assessment of performance including grain protein, yield, and N efficiency.... D. Huggins, J. Casanova, C. Phillips