タイトルまたは説明

n the past decade urea has surpassed and nearly replaced ammonium nitrate as a fertilizer. This has brought about new questions on urea and its use.

rea, a white crystalline solid containing *6% nitrogen, is widely used in the agricultural industry as an animal feed additive and fertilizer Here we discuss it only as a nitrogen fertilizer.
 

• Urea can be applied to soil as a solid or solution or to certain crops as a foliar spray.
• Urea usage involves little or no fire or explosion hazard.
• Urea's high analysis, *6% N, helps reduce handling, storage and transportation costs over other dry N forms.
• Urea manufacture releases few pollutants to the environment.
• Urea, when properly applied, results in crop yield increases equal to other forms of nitrogen.