Methane Emission in Paddy Field with Local Rice Variety in Peat- Swamps Agricultural Lands, South Kalimantan

Abstract

Rice cultivation in peat swamp agricultural lands in South Kalimantan has significant relationship with the issues of global warming. The aims of the study was to identify the methane gases releases from paddy field which are cultivated by local rice in Tamban sub district, Barito Kuala, Kuala Regency in South Kalimantan. Four local rice cultivars namely Siam Unus Putih, Pandak Putih, Siam 11 and Siam Rukut were cultivated in peat swamp paddy field. Methane release from each paddy cultivar was measured using close chamber technique. Research of the study shows that the emissions of methane from peat swamp paddy field with local rice cultivation during vegetative growth was increase and decrease during generative growth periods. The total methane emission in one season from Siam Unus local rice was estimated about 0.032 Kg/Ha while Siam Pandak rice was release methane about 0.019 Kg/Ha. This data shows that the contribution of paddy field with local rice has lowest methane emission compared from the peat swamp agricultural land with superior rice about 1.3 Ton/Ha.