Survey of nitrogen fertilizer use on corn in Minnesota

► Statewide average N fertilizer rate for corn was 157 kg N ha−1. ► 59% of farmers applied the majority of their N in the spring and 33% in the fall. ► 46% of farmers used anhydrous ammonia as their major N source and 45% used urea. ► N management could be improved by adequate crediting for previous soybean crops. ► N management could be improved in some regions by eliminating fall N application.