Abstract:
Rice production has a significant effect on global warming and atmospheric chemistry through methane emission from flooded rice soils. Water regime, soil properties and the rice plant are major factors controlling the flux of methane in rice fields. Flooded rice soils provide an optimum environment for methane production and emission. This review deals with discussion of various factors affecting methane emission, estimation, mechanism and control of methane emission. A brief description is also given on the measurement of methane emission from paddy soil with and without rice straw applications, as well as with pot experiments to estimate the contribution of rice straw to the total methane emission during the growth period of rice plants.