Control of urea hydrolysis and nitrification in soil by chemicals - Prospects and problems

Sahrawat, K L (1980) Control of urea hydrolysis and nitrification in soil by chemicals - Prospects and problems. Plant and Soil, 57 (2-3). pp. 335-352. ISSN 0032-079X

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A review is made of the recent work to assess the prospects of regulating urea hydrolysis and nitrification processes in soils by employing chemicals that can retard urea hydrolysis and nitrification. The possible benefits from control of nitrogen transformations in terms of conserving and enhancing fertilizer nitrogen efficiency for crop production and the problems associated with their use with regard to N metabolism of plants have also been discussed with examples. Prospects of using cheap and effective indigenous materials and chemicals for control of urea hydrolysis and nitrification under specific soil situations appear eminent in improving the fertilizer nitrogen efficiency. Urease inhibitors may be helpful in reducing problems associated with ammonia volatilization if this is not offset by leaching of urea. On the other hand retardation of nitrification appears useful in reducing losses that accompany nitrification due to leaching and denitrification, and with the plants that metabolize equally well with relatively higher amounts of NH4–N may be more effective in improving the utilization of fertilizer N under these situations

Item Type: Article
Uncontrolled Keywords: Fertilizer N efficiency - Inhibition of nitrification - Plant growth - Urease inhibitors
Subjects: Others > Soil Science
Others > Fertilizer Applications
Depositing User: Mr Sanat Kumar Behera
Date Deposited: 15 Nov 2011 13:23
Last Modified: 02 Dec 2011 07:50
Official URL:
Funders: Indian Agricultural Research Institute
Acknowledgement: A part of this work was carried out at the Division of Agricultural Chemicals, Indian Agricultural Research Institute, New Delhi, under a Senior Research Fellowship. I am thankful to Dr. S. K. Mukerjee for helpful suggestions and encouragement.
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