UAN

Urea Ammonium Nitrate (UAN) solution, produced by combining urea, nitric acid, and ammonia, is a liquid fertilizer product with a nitrogen content that typically ranges from 28 percent, 30 percent and 32 percent. UAN can be applied more uniformly than non-liquid forms of fertilizer. 

It can be mixed with herbicides, pesticides, and other nutrients, enabling farmers to reduce costs by applying several materials simultaneously rather than making several separate applications