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Research Journal of Environmental Sciences

Year: 2012 | Volume: 6 | Issue: 3 | Page No.: 107-117
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Authors

C.O. Akinbile

M.S. Yusoff

A.A.M. Haque

N.S. Maskir

Keywords

Research Article

An Appraisal of Methane Emission of Rice Fields from Kerian Agricultural Scheme in Malaysia

C.O. Akinbile, M.S. Yusoff, A.A.M. Haque and N.S. Maskir
Methane (CH4) emission from rice field at Kerian Agricultural Scheme, Perak, Malaysia was evaluated to ascertain its effect on rice yield with respect to water management and climate change mitigation strategies. A closed gas chamber technique was used for gas entrapment, sampling bag for collection and portable gas analyzer (GA2000) was used to detect CH4 and other gases. The measurement was conducted on hourly basis with 10 min intervals in a week at different growth stages of rice cultivation. Other soil and water analyses were carried out using standard procedures. The CH4 emission was not detected during the selected rice growing season due to the timing of measurement, however CO2 ranged between 0.1 and 1.2%, O2 between 17 and 20%, inert gases 78.9 and 81% and H2S between 5 and 14 ppm. Other factors that had indirect effects on the CH4 emission which were determined included the soil type, water level and type of fertilizer applied which depended on SO42¯ or NO3¯ constituents.
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