@article{icrisat4587,
            year = {1992},
           title = {Transformations of Surface-applied Urea in Three Soils of Varying pH},
          volume = {40},
          number = {2},
           pages = {368--370},
          author = {K L Sahrawat},
       publisher = {Indian Sociely of Soii Science},
         journal = {Journal of the Indian Sociely of Soii Science},
             url = {http://oar.icrisat.org/4587/},
        abstract = {Urea hydrolysis, volatilization of ammonia and nitrification of ammonium were investigated in a Vertisol and two Alfisols. Urea hydrolysis was complete in 1 day and 2 days in the Vertisol (pH 8.35) and one Alfisol (pH 6.20), resp.; in the second Alfisol (pH 4.50), urea hydrolysis was not complete 10 days after urea addition. Volatilization of ammonia was greatest in the Vertisol (14\% of added urea-N); in all soils volatilization had peaked by day 2. Nitrification in the soils was positively correlated with pH. The results are discussed.}
}