Urea Ammonium Nitrate Solution (UAN)
UAN is one of the most common liquid nitrogen fertilizers containing urea, ammonium and nitrate forms of nitrogen
Most common applications for UAN are injection into the soil, surface application and application through the irrigation system. UAN is a very versatile nitrogen fertilizer due to its chemical properties. The nitric part is immediately available for plant uptake; the ammonium nitrogen fraction is quickly transformed into nitrate form by soil bacteria. UAN solutions typically contain between 28% and 32% of nitrogen.