Prilled urea 46% incorporates 46% of nitrogen (N) in ureic form, quickly absorbed by the leaves of plants. Absorption through the root system is slower, because urea in soil is converted (as being a result of enzymatic hydrolysis) into the ammonia form available for plants, after which into nitrate form. https://laneizpcp.wikiparticularization.com/1723666/rumored_buzz_on_should_you_drain_and_rinse_canned_black_beans