Plant and Soil

, Volume 136, Issue 2, pp 195–203

Effect of urea fertilizer and environmental factors on CH4 emissions from a Louisiana, USA rice field

  • C. W. Lindau
  • P. K. Bollich
  • R. D. Delaune
  • W. H. PatrickJr.
  • V. J. Law
Article

DOI: 10.1007/BF02150050

Cite this article as:
Lindau, C.W., Bollich, P.K., Delaune, R.D. et al. Plant Soil (1991) 136: 195. doi:10.1007/BF02150050
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Abstract

Methane emissions from a flooded Louisiana, USA, rice field were measured over the first cropgrowing season. Microplots contained the semidwarf Lemont rice cultivar drill seeded into a Crowley silt loam soil (Typic Albaqualfs). Urea fertilizer was applied preflood at rates of 0, 100, 200 and 300 kg N ha−1. Emissions of CH4 from the plots to the atmosphere were measured over a 86-d sampling period until harvest. Methane samples were collected in the morning hours (07∶30–09∶30) using a closed-chamber technique. Emissions of CH4 were highly variable over the first cropping season and a significant urea fertilizer effect was observed. Two peak CH4 emission periods were observed and occurred about 11 d after panicle differentiation and during the ripening stages. Maximum CH4 emmissions from the 0, 100, 200 and 300 urea-N treatments were 6.0, 8.9, 9.8 and 11.2 kg CH4 ha−1 d−1, respectively. These flux measurements corresponded to approximately 210, 300, 310 and 360 kg CH4 evolved ha−1 over the 86-d sampling period for the 4 treatments.

Key words

CH4 emissions Crowley silt loam field study flooded rice urea-N 

Copyright information

© Kluwer Academic Publishers 1991

Authors and Affiliations

  • C. W. Lindau
    • 1
  • P. K. Bollich
    • 2
  • R. D. Delaune
    • 1
  • W. H. PatrickJr.
    • 1
  • V. J. Law
    • 3
  1. 1.Laboratory for Wetland Soils and Sediments and Nuclear Science CenterLouisiana State UniversityBaton RougeUSA
  2. 2.Rice Research StationLouisiana Experiment StationCrowleyUSA
  3. 3.Chemical Engineering DepartmentTulane UniversityNew OrleansUSA

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