Overwinter Survival of Phytophthora cactorum in Infected Strawberry Fruit. G. G. Grove, Graduate Research Associate, Department of Plant Pathology, Ohio State University, Ohio Agricultural Research and Development Center, Wooster 44691. M. A. Ellis, Associate Professor, L. V. Madden, Assistant Professor, and A. F. Schmitthenner, Professor, Department of Plant Pathology, Ohio State University, Ohio Agricultural Research and Development Center, Wooster 44691. Plant Dis. 69:514-515. Accepted for publication 11 December 1985. Copyright 1985 The American Phytopathological Society. DOI: 10.1094/PD-69-514.

Mummified strawberry fruits (cultivar Midway) infected with Phytophthora cactorum were exposed to winter conditions on the ground and 1 cm beneath the soil surface. Germinating oospores were observed in water suspensions prepared from mummified fruit retrieved the following spring; strawberry seedlings originating from seed in overwintered, infected mummies were also infected with P. cactorum.