Prilled Urea 46% consists of 46% of nitrogen (N) in ureic form, simply absorbed with the leaves of plants. Absorption through the basis system is slower, because urea in soil is transformed (to be a results of enzymatic hydrolysis) into the ammonia form available for plants, and then into nitrate https://abcblogdirectory.com/listings1079602/5-tips-about-urea-fertilizer-nitrogen-you-can-use-today