Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Soil Redox and pH Effects on Methane Production in a Flooded Rice Soil.
Author Wang, Z. P. ; DeLaune, R. D. ; Masscheleyn, P. H. ; Patrick, W. H. ;
CORP Author Louisiana State Univ., Baton Rouge. Wetland Biogeochemistry Inst. ;Ghent Rijksuniversiteit (Belgium). Faculteit Landbouwwetenschappen.;Corvallis Environmental Research Lab., OR.
Publisher c1993
Year Published 1993
Report Number EPA/600/J-93/290;
Stock Number PB93-222818
Additional Subjects Methane ; Biomass ; Soil chemistry ; Air pollution ; Gas production ; Rice ; Flooding ; Oxidation reduction and reactions ; pH ; Microorganisms ; Agricultural products ; Organic matter ; Greenhouse gases ; Anaerobic processes ; Reprints ;
Library Call Number Additional Info Location Last
NTIS  PB93-222818 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 11/22/1993
Collation 6p
Methane formation in soil is a microbiological process controlled by many factors. Of them soil redox potential (Eh) and soil pH are considered as critical controls. A laboratory incubation experiment was conducted to study the critical initiation soil Eh, the optimum soil pH, and the interaction of Eh and pH on methane production. A small decrease in pH resulting from the introduction of acidic materials significantly decreased methane production. However, a slight increase in soil pH (about 0.2 unit higher than the natural soil suspension pH) resulted in an enhancement of methane production by 11-20 percent and 24-25 percent at controlled Eh of -250 mV and -200 mV, respectively. Results suggest that decrease in methane emission could be obtained by a small reduction in soil pH in Crowley soil.