The rapid change in the agro-ecosystem leaves a snag in the establishment of harmony the discard of the disturb ecosystem due to wide usage of chemical pesticides, fertilizers, and synthetic plant growth regulators. The long term effect were overlooked hence, boom of one time become bane for the ecosystem degradation. At the present context, it has become indispensable to look for sustainable crop protection management approaches for disease management and the present book is an effort to this direction. The diseases of economic importance caused by fungi, bacteria, viruses and virus like...