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Biology and Fertility of Soils

, Volume 15, Issue 3, pp 174–178 | Cite as

Methane mitigation in flooded Louisiana rice fields

  • C. W. Lindau
  • P. K. Bollich
  • R. D. DeLaune
  • A. R. Mosier
  • K. F. Bronson
Article

Summary

A field experiment was conducted to determine whether selected nitrification inhibitors (encapsulated calcium carbide and dicyandiamide) and SO inf4 sup-2 -containing compounds [(NH4)2SO4 and Na2SO4] had mitigating effects on CH4 emissions from flooded rice. Microplots were established within a rice bay drill-seeded with the Texmont rice cultivar and CH4 fluxes were measured over the main rice cropping season. Methane emissions over the 77-day sampling period were approximately 230, 240, 260, 290, 310, and 360 kg CH4 ha-1 from the calcium carbide, Na2SO4-rate II, Na2SO4-rate I, (NH4)2SO4, dicyandiamide, and urea (control) treatments, respectively. Reductions in CH4 evolution, compared to the control, ranged from 14 to 35%, depending on treatment. The selected inhibitors and SO inf4 sup-2 -containing compounds appear to be effective in reducing the CH4 emitted from flooded rice fields.

Key words

Methane emissions Flooded soil Greenhouse gas Wetland rice Mitigation 

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Copyright information

© Springer-Verlag 1993

Authors and Affiliations

  • C. W. Lindau
    • 1
  • P. K. Bollich
    • 2
  • R. D. DeLaune
    • 1
  • A. R. Mosier
    • 3
  • K. F. Bronson
    • 3
  1. 1.Wetland Biogeochemistry Institute and Nuclear Science CenterLouisiana State UniversityBaton RougeUSA
  2. 2.Rice Research StationLouisiana Experiment StationCrowleyUSA
  3. 3.Agriculture Research ServiceU.S. Department of AgricultureFort CollinsUSA

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