Urea can be supplied as either a bulk or bagged product. It is used mainly for pre-plant application and for side or top-dressing pasture, grain and forage crops. It is used extensively in horticulture and cropping.Urea can significantly boost late winter early spring production in grain and forage crops.Urea can volatilise (essentially evaporate) over time if it is not watered and therefore best results are achieved when surface broadcast prior to rain or irrigating. Urea nitrogen must also be converted by soil microbes into a plant available form.Urea may be applied in irrigation water and as a foliar spray. Urea can also be used as a stockfeed supplement for ruminants. Seek appropriate guidelines.