Nitrogen (N) is the nutrient most often deficient for crop production in Minnesota, and its use can result in substantial economic return for farmers.
However, when N inputs to the soil system exceed crop needs, there’s a possibility that excessive amounts of nitrate may enter either ground or surface water. By effectively managing nitrogen, growers can produce crops in a more profitable and environmentally friendly way.
- When and how to use a soil N test.
- Minnesota research on N tests and alternative approaches.
- How to apply and store urea.
- Urea basics, including its physical forms, advantages and ways it can be lost.
Fertilizer recommendations by crop:
- How to apply nitrogen: Sources, timing, rates, methods and safety guidelines.
- Irrigation systems and equipment, and how to calibrate.