relation: http://oar.icrisat.org/4587/ title: Transformations of Surface-applied Urea in Three Soils of Varying pH creator: Sahrawat, K L subject: Soil Science subject: Fertilizer Applications description: 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. publisher: Indian Sociely of Soii Science date: 1992 type: Article type: PeerReviewed format: application/pdf language: en identifier: http://oar.icrisat.org/4587/1/JIndianSocSoilSci_40_368_-_370_1992.pdf identifier: Sahrawat, K L (1992) Transformations of Surface-applied Urea in Three Soils of Varying pH. Journal of the Indian Sociely of Soii Science, 40 (2). pp. 368-370. ISSN 0019-638X relation: http://indianjournals.com/ijor.aspx?target=ijor:jisss&volume=40&issue=2&article=031