Prilled urea 46% incorporates 46% of nitrogen (N) in ureic form, quickly absorbed because of the leaves of plants. Absorption in the root system is slower, because urea in soil is transformed (like a results of enzymatic hydrolysis) into the ammonia form available for plants, after which into nitrate form. https://prbookmarkingwebsites.com/story25390483/rumored-buzz-on-fibre-de-sisal-pour-pl%C3%A2tre