Cambodia Moves Forward on National Roadmap to Cut Methane Emissions From Rice Farming
Cambodian government officials and agricultural stakeholders held consultations on implementing a national roadmap for reducing methane emissions from paddy rice cultivation. The roadmap is part of Cambodia's climate commitments and draws on water management and variety selection as the primary tools.
Cambodia held stakeholder consultations on the implementation of a national roadmap aimed at reducing methane emissions from paddy rice production. Rice paddies are one of the largest agricultural sources of methane globally: flooded fields create anaerobic conditions that allow methane-producing microorganisms to thrive, and Southeast Asia accounts for a significant share of that output given the scale of rice cultivation in the region.
The roadmap under discussion centers on alternate wetting and drying (AWD), a water management technique that periodically allows paddy fields to dry before reflooding. AWD can reduce methane emissions from rice by 30 to 50% compared to continuously flooded paddies while also cutting irrigation water use. Adoption requires monitoring equipment and farmer training, and it carries a risk of yield penalty if drying cycles are mistimed.
Cambodia's engagement with the methane reduction agenda follows international pressure on rice-producing countries to act on non-CO2 agricultural greenhouse gas emissions as part of national climate plans. Rice farming represents a significant portion of Cambodia's agricultural sector and rural employment base. Implementation is expected to involve international development partners, including FAO and CGIAR-affiliated research programs that have been piloting AWD across the Mekong Delta region.