This book on biological control of rice diseases deals with microorganisms and cultural practices as the non-chemical alternatives developed and used to manage devastating rice diseases such as blast, sheath blight, bacterial blight and rice tungro disease in Asia. The term, biological control has been used also to include transgenic rices which carry rice genes or others whose transient expression cause resistance to pathogens and reduce the use of chemicals. This is the first book that has been brought out to document the biological control research in rice and the application of biocontrol agents to rice. It has been developed to provide detailed accounts on the subject of biological control practised in rice over the last 30 years. However, the methodologies and merits apply to disease control in all other major crops and therefore, should be of significant interest to researchers and students of plant pathology, microbiology and crop science.