Anthracnose Outbreak

Written by

Phil Brannen

April 17, 2019

Anthracnose is prevalent in strawberry plantings at this time. As mentioned in the last post, I am concerned about resistance. If you identify anthracnose in your planting, have it tested for resistance to the QoI (strobilurin) chemistry class (Abound, etc.). While you wait for test results, apply Switch + Captan at high rates for the next two applications if you have not exceeded the total amount of these products you can utilize for the season. Switch has a 12-hour restricted-entry interval. For Captan, the restricted-entry interval is 24 hours, so they both require that you stay out of the field for 24 hours for all practical purposes if you combine them.

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Phil Brannen

Phil Brannen is a Professor in the Plant Pathology Department at the University of Georgia. He attended the University of Georgia for his undergraduate degree in Plant Protection and Pest Management, where he also received an M.S. in Plant Pathology, followed by a Ph.D. in Plant Pathology from Auburn University. He has extensive experience with disease management programs in numerous cropping systems. He serves as the extension fruit pathologist for Georgia – conducting research and technology transfer for multiple fruit commodities. His efforts are directed towards developing IPM practices to solve disease issues and technology transfer of disease-management methods to commercial fruit producers. He also teaches the graduate level Field Pathology Course, the History of Plant Diseases and their Impact on Human Societies Course, team-teaches the IPM Course, coordinates the Viticulture and Enology in the Mediterranean Region Course (Cortona, Italy), and guest lectures in numerous other courses throughout the year.