The present volume is compendium of wide ranging modern topics on microbial diversity and forecasting based disease management strategy. It is an assemblage of the up-to-date information of rapid advances and developments taking place in the field of integrated plant disease management. The chapters on control of plant diseases have been recognized and expanded to include recent developments on all aspects of IDM and of new chemicals and biological agents used for plant disease control. The information on distribution, biology, epidemiology, and control of pathogens and diseases have been updated. The details of key potential diseases and their IDM along with photographs will help the readers to identify diseases, the damage caused by them, and their natural enemies. IDM is also environment-friendly and safer for farmers. The book is intended to serve as a text for undergraduate and post graduate students of plant pathology and related disciplines and as a reference source for teachers, researchers, technologists, extension workers, disease scouts,agribusiness personnel, home gardeners and others interested in integrated diseases management.