Wikipedia
Adapt-n
Adapt-N is a precision nitrogen management solution operated by Agronomic Technology Corp. It was developed at Cornell University. It examines soil, weather, crop, field management data to provide an always-on, field-specific nitrogen recommendation that has been shown to improve financial and environmental performance.
Adapt-N simulates the nitrogen cycle, including nitrogen fixation, nitrification and denitrification through a combination of soil, weather, crop and field management modeling.