Drought is a major factor of grain yield damage. Impact in the area of rice fields northeast and north, because rice is the major source of the country, because the climate variability. Become more frequent and more violence in every year. The land development department, which has collected statistics on agricultural drought occurs to each year. Because agricultural system 75 percent of rainfed agricultural system. The study data onto hundreds of years of drought in the round (Buckley et al, 2007). Found that drought impact especially agricultural areas to rainfed. Water is important to growth and yield of rice if lack water in rice seedling and flowering stage. It will be a critical point yield reduction both in quantity and quality (Dubey; 1994; พีระยศ, 2539; เอกสงวน, 2554). But it will affect the growth and yield of rice, much will depend on the level of violence,The longest drought and the growth stage of the rice to be affected (Gupta and Toole, 1986).