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Full-Text Articles in Physical Sciences and Mathematics
Using Urea Nitrogen As A Fertilizer, Kenneth L. Wells
Using Urea Nitrogen As A Fertilizer, Kenneth L. Wells
Soil Science News and Views
Solid granular or prilled urea (45-46% N) has become widely available in Kentucky, as has 28% nitrogen solution (UAN solution) which is half urea and half ammonium nitrate. When applied to a field, urea is transformed to ammonium N soon after application. The rate of transformation is greatly increased by urease, the enzyme found to varying degrees in soil and on plants and plant residues. Due to the chemical reactions involved as urea nitrogen undergoes transformation, there is some degree of likelihood for volatilization loss of some N. Whether such a loss will occur, and how much N will be …
Use Of Urea For Crop Production In Kentucky, Wilbur W. Frye
Use Of Urea For Crop Production In Kentucky, Wilbur W. Frye
Soil Science News and Views
Current trends indicate that urea will become the major source of solid and liquid N fertilizer in the future. Although urea has several advantages over other N fertilizers, especially in manufacturing, transporting, and marketing, there are some potential agronomic problems that farmers should keep in mind when using urea.