Prilled urea 46% features 46% of nitrogen (N) in ureic form, very easily absorbed with the leaves of plants. Absorption with the root system is slower, because urea in soil is converted (being a result of enzymatic hydrolysis) into the ammonia form available for plants, then into nitrate form. Insert https://my-social-box.com/story5742107/an-unbiased-view-of-fertilizer-urea-composition