Fungi That Cause Cane Cankers on Thornless Blackberry in Ohio. M. A. Ellis, Associate Professor, Department of Plant Pathology, Ohio Agricultural Research and Development Center, Ohio State University, Wooster 44691. G. A. Kuter, Senior Researcher, and L. L. Wilson, Agricultural Technician I, Department of Plant Pathology, Ohio Agricultural Research and Development Center, Ohio State University, Wooster 44691. Plant Dis. 68:812-815. Accepted for publication 2 March 1984. Copyright 1984 The American Phytopathological Society. DOI: 10.1094/PD-68-812.

Fusarium spp., Alternaria spp., Epicoccum purpurescens, Cytospora sp., Pestalotiopsis sp., Leptosphaeria coniothyrium, Gnomonia rubi, and Botryosphaeria obtusa were isolated from cane cankers on thornless blackberry in Ohio. Pathogenicity tests demonstrated that only L. coniothyrium, G. rubi, and B. obtusa were pathogenic. Each produced characteristic cankers on thornless blackberry and was recovered from diseased tissue after inoculation.