Chemical pesticides were introduced in Bangladesh with a great hope to protect the crops from pests. But their random and indiscriminate use has created a very serious health and environmental problems. It was therefore very necessary to find a better alternative. This book gives invaluable information on the current trends in the usage of pesticide and various research projects on biopesticides in Bangladesh. Hazardous impacts of chemical pesticides, global overview of biopesticides, importance of Bacillus thuringiensis as a biopesticide have been discussed in the book. Moreover, it has published the updated information on some research works on biopesticides in Bangladesh. A detail information on the impact of Integrated Pest Management (IPM) implementation in Bangladesh has been included in the book. Finally it has described about the new agricultural extension policy in Bangladesh. The book will be especially useful to the researchers, programme and project implementers, policy makers and administrators in the agricultural sector.