Prilled Urea 46% includes 46% of nitrogen (N) in ureic form, easily absorbed by the leaves of plants. Absorption through the foundation system is slower, because urea in soil is converted (as being a result of enzymatic hydrolysis) into the ammonia form available for plants, after which into nitrate form. https://cutewebdirectory.com/listings13656940/fibre-sisal-sumatra-an-overview