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Basic information about urea
2014-11-03 11:34:55
Urea is also known as carbamide, is an organic compound of carbon, nitrogen, oxygen and hydrogen, with the formula CON2H4 or (NH2)2CO.
Urea is produced commercially from two raw materials, ammonia and carbon dioxide.Large quantities of carbon dioxide are produced during the manufacture of ammonia from coal or from hydrocarbons such as natural gas and petroleum derived raw materials. This allows direct synthesis of urea from these raw materials. Urea has a number of advantages over other nitrogen fertilizers. Urea is safer to ship and handle, it is less corrosive to equipment, it has a higher analysis than any other dry nitrogen fertilizer and it can be used on virtually all crops
Attention to the use of Urea:
1.Urea as a fertilizer can be applied to the soil and is also suitable for spraying on the leaf
2.Spraying on the leaf is applicable to all kinds of crops.The appropriate concertration is between 0.2% to 2.0%,depending on the crop species and growth period.For leaf spraying,it is important to note that minor component biuret test result is lower than 0.5%
3.Urea is not fit for seed manure because of high nitrogen content and may result to buring the seedings.Some urea which contains certain amount of biuret may also be toxic to the seeding.