Prilled urea forty six% includes 46% of nitrogen (N) in ureic form, simply absorbed because of the leaves of plants. Absorption in the root system is slower, because urea in soil is converted (like a result of enzymatic hydrolysis) into the ammonia form available for plants, then into nitrate form. https://sociallweb.com/story5794900/how-fertilizer-npk-19-19-19-can-save-you-time-stress-and-money