D.W. Franzen, NDSU Department of Soil Science

The N calculator can be found on-line at https://www.ndsu.edu/pubweb/soils/corn/  for use with lap-top or desktop computers. Recently, we have made available for free an N-calculator App for iPhones and Android phones. Go to the app store and search for North Dakota Crop Nitrogen Calculator. Download and follow the instructions.