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

Plant and Soil volume 57, pages 335–352 (1980)Cite this article

Summary

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.

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  1. K. L. Sahrawat

    Present address: International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), ICRISAT, Patancheru PO, 502 324, Andhra Pradesh, India

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    Sahrawat, K.L. Control of urea hydrolysis and nitrification in soil by chemicals—Prospects and problems. Plant Soil 57, 335–352 (1980). https://doi.org/10.1007/BF02211691

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    Key Words

    • Fertilizer N efficiency
    • Inhibition of nitrification
    • Plant growth
    • Urease inhibitors

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