UAN – liquid nitrogen fertilizer, that contains a mixture of solutions of carbamide and ammonium nitrate. UAN does not contain free ammonia and has certain technological advantages over other liquid and solid nitrogen fertilizers when applied:
- Full mechanization of all stages of storage, transportation and fertilization processes is provided;
- nutrient losses are reduced and pollution is reduced;
- Efficiency is enhanced by extending the timing of UAN application and more even distribution of crops;
- costs are reduced due to the possibility of combining the application of UAN in a tank mixture with herbicides, fungicides, insecticides and other liquid mineral fertilizers;