Soybean is one of the most important sources of plant protein and edible oil. It has the extremely high nutritional value. But soybean disease has resulted in considerable decrease even no harvest in process of producing. So it has become a bottleneck problem of restricting yield and quality. Frogeye leaf spot is fungal disease,which occurs worldwide. The pathogen of this disease can infect leaves, stems, pods and seeds, and reduce yield mainly because of reduced photosynthetic area and premature defoliatio...