Rice (Oryza Sativa) is an important cereal in Thailand, because it is a staple food in almost of Asian people and raw material in many foods that makes rice is economy plant but plant diseases such as rich blast, sheath blight and so on decrease volume of rice because it can infect every period of rice growth. Moreover farmers favor to use chemical to eliminate pest in the paddy field when it takes for long time it can make chemical effects that it has a lot of side effects which force researchers to find the better way to prevent this problem and friendly with environment.
Bacillus spp. is an microorganism that can control several plant diseases such as sheath blight, brown spot, and so on, which Bacillus spp. can find in the nature but now Using Bacillus spp.to control rice blast it can