Prilled urea 46% features forty six% of nitrogen (N) in ureic form, conveniently absorbed with the leaves of plants. Absorption through the root system is slower, because urea in soil is transformed (as a result of enzymatic hydrolysis) into the ammonia form available for plants, and then into nitrate form. https://totalbookmarking.com/story20341070/the-basic-principles-of-npk-ferterlizer