Nitrogen Use

Nitrogen Use Charts Tables Corn Yields Corn Yields Following Alfalfa Nitrogen Use and Corn Acres Planted Nitrogen Use for All Crops Nitrogen Use for Corn: Iowa Relative to Corn Belt Nitrogen Use for Corn Corn Yields: Iowa Relative to Corn Belt Annual Reduction in Nitrogen Use IDALS Sales Data and NASS Survey Data     Links Soil Fertility Nutrient Topic: Nitrogen ISU Soil and Plant Analysis Laboratory Practical Farmers of Iowa Nitrogen Management Resources ISU Extension Publications   DATA SOURCES: http://www.extension.iastate.edu/ag/crops.html Iowa Agricultural Statistics Service (a State Statistical Office of the National Agricultural Statistics Service) United States Department of Agriculture