Urea Agriculture The most concentrated nitrogen fertilizer. Supplies plants with a continuous source of nitrogen over a long period of time. Contains 46.2% of nitrogen in amide form. 100% water-soluble. Can be used in irrigation systems and for foliar dressing Appearance White prills Total nitrogen(N) min 46.2% Bluret max 1% Moisture content, max. 3% Granulometric composition: under 1 mm, max 3% 1-4 mm, min 94% under 6 mm 100% Static strength of granules, min, kgF/granule 0.7 Friability, min 100%