Agriculture is a major anthropogenic source of greenhouse gases, i.e., methane (CH4) and nitrous oxide (N2O). Rice paddy soil is a source of CH4. Chemical and organic fertilizer application increase N2O emission from soil. However, agriculture soil has a large potential to act as a sink of atmospheric carbon dioxide (CO2). Changing the farming practices could remove substantial amounts of CO2 from the atmosphere, by storing carbon in soil as organic matter. Greenhouse gas mitigation unit is carrying out range of research work to increase soil C stock and to mitigate greenhouse gas emission from agricultural soil. Increasing input of organic matter and reducing tillage can increase soil C stock. Our previous work showed that CH4 emission from paddy rice fields can be reduced by changing water management practice without affecting yield. We also showed that N2O can be reduced by using nitrification inhibitors. We will seek a solution to mitigate greenhouse gas from agriculture sector while adapting climate change and meeting increasing demand of agricultural products.
|Shigeto SUDO||Principal Researcher|