Prilled urea forty six% contains 46% of nitrogen (N) in ureic form, conveniently absorbed from the leaves of plants. Absorption in 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. https://social4geek.com/story5922215/canola-oil-or-corn-oil-an-overview