Prilled urea 46% includes 46% of nitrogen (N) in ureic form, simply absorbed via the leaves of plants. Absorption throughout the root system is slower, because urea in soil is transformed (as being a results of enzymatic hydrolysis) into the ammonia form available for plants, and then into nitrate form. https://charlieibsgv.azuria-wiki.com/1698169/the_ultimate_guide_to_cashew_nuts_made_from