Transformations of Surface-applied Urea in Three Soils of Varying pH

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

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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.

Item Type:	Article
Divisions:	UNSPECIFIED
CRP:	UNSPECIFIED
Subjects:	Others > Soil Science Others > Fertilizer Applications
Depositing User:	Mr Sanat Kumar Behera
Date Deposited:	01 Dec 2011 04:07
Last Modified:	01 Dec 2011 04:07
URI:	http://oar.icrisat.org/id/eprint/4587
Official URL:	http://indianjournals.com/ijor.aspx?target=ijor:ji...
Projects:	UNSPECIFIED
Funders:	UNSPECIFIED
Acknowledgement:	UNSPECIFIED
Links:	Author

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