Prilled urea 46% includes 46% of nitrogen (N) in ureic form, conveniently absorbed with the leaves of plants. Absorption from the root system is slower, because urea in soil is converted (for a result of enzymatic hydrolysis) into the ammonia form available for plants, and then into nitrate form. Insert https://seolistlinks.com/story21602719/the-greatest-guide-to-npk-fertilizer-how-to-make