Prilled urea forty six% consists of 46% of nitrogen (N) in ureic form, simply absorbed via the leaves of plants. Absorption in the root system is slower, because urea in soil is transformed (as a result of enzymatic hydrolysis) into the ammonia form available for plants, and then into nitrate https://bookmarkize.com/story20323554/an-unbiased-view-of-fertilizer-urea-composition