||Soil Redox and pH Effects on Methane Production in a Flooded Rice Soil.
Wang, Z. P. ;
DeLaune, R. D. ;
Masscheleyn, P. H. ;
Patrick, W. H. ;
||Louisiana State Univ., Baton Rouge. Wetland Biogeochemistry Inst. ;Ghent Rijksuniversiteit (Belgium). Faculteit Landbouwwetenschappen.;Corvallis Environmental Research Lab., OR.
Soil chemistry ;
Air pollution ;
Gas production ;
Oxidation reduction and reactions ;
Agricultural products ;
Organic matter ;
Greenhouse gases ;
Anaerobic processes ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||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.
||Pub. in Soil Science Society of American Jnl. 57, p382-385 1993. See also PB93-222800. Prepared in cooperation with Ghent Rijksuniversiteit (Belgium). Faculteit Landbouwwetenschappen. Sponsored by Corvallis Environmental Research Lab., OR.
|NTIS Title Notes
||Reprint: Soil Redox and pH Effects on Methane Production in a Flooded Rice Soil.
||68A; 48E; 98C; 57K
||PC A02/MF A01