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Seedling Diseases Caused in Soybean by Species of Colletotrichum and Glomerella. K. W. Roy, Associate professor of plant pathology, Department of Plant Pathology and Weed Science, Mississippi State University, Mississippi State 39762; Phytopathology 72:1093-1096. Accepted for publication 5 January 1982. Copyright 1982 The American Phytopathological Society. DOI: 10.1094/Phyto-72-1093.

Infestation of soybean seeds with Colletotrichum dematium var. truncata, C. gloeosporioides, C. graminicola, and Glomerella cingulata reduced seedling emergence in the greenhouse and field. Colletotrichum destructivum reduced emergence only in the greenhouse, Glomerella glycines only under field conditions. C. dematium var. truncata, C. gloeosporioides and G. cingulata were the only species that caused severe hypocotyl and cotyledonary infection and significant stunting of seedlings. As potential pathogens of soybean seedlings in the field, C. dematium var. truncata, C. gloeosporioides, and G. cingulata appear to be more significant than the other species investigated.

Additional keywords: alfalfa, apple, bell pepper, cocklebur, corn, purple nutsedge.