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Cercospora sojina Race 5: A Threat to Soybeans in the Southeastern United States. D. V. Phillips, Department of Plant Pathology, Georgia Experiment Station, Experiment 30212; H. R. Boerma, Dept. of Agronomy, University of Georgia, Athens 30602. Phytopathology 71:334-336. Accepted for publication 25 July 1980. Copyright 1981 The American Phytopathological Society. DOI: 10.1094/Phyto-71-334.

Severe frogeye leafspot was found on soybeans (Glycine max) at widely separated locations in Georgia during the 1978 growing season. The reaction of several soybean cultivars to Cercospora sojina isolated from these plants indicated that it differed from previously described races. The isolate from Georgia was designated race 5. Cultivar Bragg and other widely grown cultivars are susceptible to race 5. The reactions of many cultivars grown in the southeastern USA are presented.