Since World War II and continuing to the present day University of California (UC) research has established crop-specific “N rate guidelines” (Proebsting 1948; Hartz and Bottoms 2009). An N rate guideline is a range of N application rates expressed as a unit of weight area-1 (e.g. kg ha-1) that are generally able to achieve maximum yield. Most often N application rate guidelines are printed in University of California Department of Agriculture and Natural Resources (UC DANR) publications and are extended to producers through information channels including: bulletins production manuals and field days.
Publication year
2016
Authors
Tomich, T.P.; Leverenz, H.; Liptzin, D.; Meyer, D.; Munk, D.; Phelan, P.L.; Six, J.; Rosenstock, T.S.
Keywords
Nitrogen cycle, Field crops, California Nitrogen, Biogeochemical cycle
