Soil Nitrogen Benchmark April 19, 2021
The optimum rate of Nitrogen fertilizer application on corn varies from year to year and from field to field. Here we provide simulation data to aid decision making.
We simulated 25,000 fields across the U.S. Corn Belt from 1984 to 2021 using the Agricultural Production Systems sIMulator (APSIM). In this report, we benchmark Iowa soil N mineralization and N loss by crop reporting district.