Plants are the most important part of the cycle of nature. All other life forms are directly or indirectly dependent upon plants. To control or mitigate plant diseases researchers are applying chemical fertilizers and pesticides. Such inputs to agriculture have contributed significantly to the spectacular improvements in crop productivity but at the same time playing a role as a pollutant for environment and human beings. Consequently, some pest management researchers have focused their efforts on developing alternative inputs to synthetic chemicals for controlling pests and diseases....