Prilled Urea forty six% includes 46% of nitrogen (N) in ureic form, easily absorbed with the leaves of plants. Absorption through the root system is slower, because urea in soil is transformed (for a results of enzymatic hydrolysis) into the ammonia form available for plants, then into nitrate form. 4. https://jacquesc736bnd4.verybigblog.com/40196562/a-review-of-npk-fertilizer-video