Prilled urea 46% incorporates 46% of nitrogen (N) in ureic form, quickly absorbed with the leaves of plants. Absorption in the root system is slower, because urea in soil is converted (to be a result of enzymatic hydrolysis) into the ammonia form available for plants, and then into nitrate form. https://sethhsuya.bloggazzo.com/36028254/not-known-factual-statements-about-black-beans-fiber-content