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 transformed (as being a results of enzymatic hydrolysis) into the ammonia form available for plants, and afterwards into nitrate form. https://morningdirectory.com/listings1148515/what-does-black-turtle-beans-slow-cooker-mean