Dear Anil S Kotasthane

We never search for perfect chemical control, our strategies or tactics are accumulated of knowledge and practicing the results of scientists and farmer since plant monoculture started by experiment to benefit from trial and error,

experience and debugging, we are usually seeks for balance or rebalance in nature. Integrated Disease Management (IDM) is a concept derived from the successful Integrated Pest Management (IPM) systems developed by entomologists for insect and mite control. In most cases IDM consists of scouting with timely application of a combination of strategies and tactics. These may include site selection and preparation, utilizing resistant cultivars, altering planting practices, modifying the environment by drainage, irrigation, pruning, thinning, shading, etc., and applying pesticides, if necessary. But in addition to these traditional measures, monitoring environmental factors (temperature, moisture, soil pH, nutrients, etc.), disease forecasting, and establishing economic thresholds are important to the management scheme. These measures should be applied in a coordinated integrated and harmonized manner to maximize the benefits of each component. For example, balancing fertilizer applications with irrigation practices helps promote healthy vigorous plants. However, this is not always easy to accomplish, and “disease management” may be reduced to single measures exactly the same as the ones previously called “disease control.” Whatever the measures used, they must be compatible with the cultural practices essential for the crop being managed.

Pls. find the attached file

http://msue.anr.msu.edu/news/strategies_for_disease_control_in_crops

Hoping this will be helpful            

Regards

Prof. Houda Kawas