Earthly Roots Granular Urea is a type of nitrogen fertilizer that is made from urea, a by-product of ammonia production. It is a highly concentrated form of nitrogen fertilizer, containing 46% nitrogen. Urea fertilizer is an excellent choice and efficient way to provide nitrogen to crops and is especially beneficial for crops that require high levels of nitrogen. 46% Nitrogen Min Type: Granular Colour: White Moisture: 1% Max Biuret: