In developing countries, the impact of Plant diseases on agricultural productivity is immense. In most cases the farmers of these countries are using chemical pesticides for the welfare of their produce. Negligibly, other plant disease management strategies are not in use. In some instances, resistant crop varieties, crop production and integration of them are getting exercised. Currently, there is a need of increasing food production to feed the ever increasing world population. To achieve this goal, management of production constraints is of major concern using any available options. In...