I am written the book on the experiences of my research during M Sc on Investigation on Epidemiology & Management of Alternaria Blight disease of Rapeseed - Mustard was included in this book. In this book, detailed information about Alternaria Blight of Rapeseed - Mustard disease and its integrated management strategy has been explained. This book is very useful for farmers and students. This book is very useful to farmers as well as students.