Prilled urea 46% incorporates 46% of nitrogen (N) in ureic form, easily absorbed through the leaves of plants. Absorption throughout 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://socialioapp.com/story5132894/helping-the-others-realize-the-advantages-of-black-seed-cumin-plant