Prilled urea 46% features 46% of nitrogen (N) in ureic form, easily absorbed through the leaves of plants. Absorption through the root system is slower, because urea in soil is converted (as a results of enzymatic hydrolysis) into the ammonia form available for plants, and then into nitrate form. Insert https://moodjhomedia.com/story3171199/fascination-about-npk-fertilizer-home-made