Control of Strawberry Anthracnose with Captafol. Bryan R. Delp, Graduate Research Assistant, Department of Plant Pathology, North Carolina State University, Raleigh 27650. R. D. Milholland, Professor, Department of Plant Pathology, North Carolina State University, Raleigh 27650. Plant Dis. 64:1013-1015. Copyright 1980 American Phytopathological Society. DOI: 10.1094/PD-64-1013.

Strawberry anthracnose (Colletotrichum fragariae) causes severe losses in strawberry nurseries throughout the southeastern United States, despite the use of the recommended fungicide, benomyl. Fungitoxic concentrations of captafol, captan, maneb, and benomyl to C. fragariae in vitro were 1.0, 100, 100, and 500 µ g a.i./ml, respectively. Captafol controlled the disease in the field if applied every 7 days but was ineffective applied every 14 days. Benomyl, maneb, and captan were ineffective. In 1978 and 1979 there were no significant differences in yield among the captafol treatments applied every 7 days at 1.2, 2.4, 3.6, and 4.8 g a.i./L. Disease was more severe at the two lower rates in 1979.