Prilled Urea 46% includes 46% of nitrogen (N) in ureic form, very easily absorbed from the leaves of plants. Absorption through the root system is slower, because urea in soil is transformed (for a result of enzymatic hydrolysis) into the ammonia form available for plants, then into nitrate form. 4. https://directoryhand.com/listings13585747/rumored-buzz-on-fertilizer-content-of-dap