2019 Nitrogen Use Efficiency Notes
Nitrogen (N) fertilizer is essential for growing most crops. Some ammonium and urea-based fertilizers are susceptible to loss as ammonia (NH3) gas, especially when left on the soil surface. Ammonia losses from fertilizer can represent a significant economic loss and may have a negative effect on air quality and human health. The major factors controlling NH3 losses from fertilizers and animal wastes are discussed here.