ABSTRACT
Disease management requires a detail understanding of all aspects of crop production, economics, environmental, cultural, genetics and epidemiological information upon which the management decisions are made. Management of plant disease is continuous cycle based on the principle of eradication of the pathogen and on the principle of minimizing the damage or loss due to disease below economic injury level. Development and utilization of host plant resistance remains the most viable, environmentally safe, ecologically sound and also less expensive technique for the management of diseases. Management of plant disease by chemical methods is uneconomical, less effective and harmful to the beneficial microbes. In addition, they cause residual problem in the soil and farm produce. Seed treatment chemicals enable protection only in the early stages of crop growth (about 15 days) but biological control is cheaper, highly effective and has no residual problem.
