Plant and Soil

, Volume 70, Issue 2, pp 219–228 | Cite as

Ammonia volatilization from applied nitrogen in alkali soils

  • D. L. N. Rao
  • Lalita Batra


Incubation studies in a highly alkali soil showed ammonia volatilization losses from applied nitrogen to be largely governed by pH/alkalinity of the system. Submergence of the soil decreased the pH value resulting in lower losses. The anion of ammonium did not influence the losses. Ammonia volatilization obeyed first order kinetics. The losses were considerably reduced by deep placement of urea but were unchanged with variation in temperature from 20° to 40°C. Urea or ammonium sulphate lost similar amounts of nitrogen. Losses from green manure were very low. The results are discussed for their implication in nitrogen fertilizer efficiency and management in alkali soils.

Key words

Alkali soil Ammonium sulphate Ammonia volatilization Green manure Urea 


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Copyright information

© Martinus Nijhoff/Dr W. Junk Publishers 1983

Authors and Affiliations

  • D. L. N. Rao
    • 1
  • Lalita Batra
    • 1
  1. 1.Central Soil Salinity Research InstituteKarnalIndia

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