Cleistothecia of Sphaerotheca macularis on Strawberry Plants in Florida. C. M. Howard, Professor of Plant Pathology, University of Florida, Agricultural Research Center, Dover 33527. E. E. Albregts, Professor of Soil Science, University of Florida, Agricultural Research Center, Dover 33527. Plant Dis. 66:261-262. Accepted for publication 4 December 1981. Copyright 1982 American Phytopathological Society. DOI: 10.1094/PD-66-261.

Cleistothecia of Sphaerotheca macularis were found in 1981 for the first time on strawberry plants in Florida. They were found only on plants that had been grown in Maine and Michigan and were transplanted into Florida fruit production fields. Benomyl and sulfur failed to control powdery mildew on these plants. Powdery mildew was widespread on plants that had been grown in five other states, but no cleistothecia were found on these plants, and benomyl or sulfur controlled the disease.

Keyword(s): Fragaria × ananassa.