Rice production in water-deficient regions

Rice output in Asia must grow to feed the people constantly. Although the water scarcity in Asia's rice production is yet fully assessed, there are evidence that decreasing water quality and water availability threatens the sustainability of the irrigated rice system. Drought is one of the main constraints of high yields in rain-fed rice. In Asia, food safety and environmental health must investigate methods to cultivate more rice with less water. This study analyses the entire strategy of the International Rice Research Institute (IRRI) to raising rice yields and decreasing water demand for rice cultivation, which encompasses genetics, breeding and integrated management of resources. Irrigation methods such as saturated soil cultivation and alternate wetting and desiccating will substantially decrease wasteful discharges while still improving the productivity of water. Another new technique for improving water productivity are being explored without compromising output. The C4 photosynthetic pathway is incorporated into rice to enhance yield per unit of water transpired, use genetic biotechnology to promote droughtresistance and create "aerobic rice " to obtain excellent, safe yields in unflooded soil.