Resistance of Botrytis to Fungicides
in California Strawberries

California Department of Food and
Agriculture Outreach Webcast

November 2017



By Scott Cosseboom
M.S. Student
Agriculture - Plant Protection Science
California Polytechnic University San Luis Obispo
Phone:
831-595-6085
Email:scottcosseboom@gmail.com


Watch Presentation (17 min 23 sec)

for PC, Mac, and Articulate Mobile Player App (17.2 MB)
Video for Android (25.1 MB) | Video for iPhone (36.4 MB)

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Note: For the best viewing experience on your PC, please use Google Chrome. For the best iPad viewing experience, you will be prompted to download the free Articulate Mobile Player app.


Summary: This webcast discusses strawberry gray mold, the resistance of its causal agent, Botrytis cinerea, to fungicides, and management options for the future. Results from a survey of fungicide resistance of the California strawberry crop’s B. cinerea population shows an example of a dynamic multi-fungicide resistance issue. Multiple fungicide applications per season appear to be selecting for increasingly resistant populations of B. cinerea. A resistance management strategy to delay further resistance development is discussed and encouraged. This presentation will aid members of the strawberry industry and other fields in the sustainable management of a multi-fungicide resistant pathogen. Visit this link for a printable summary of Strawberry Gray Mold: sustainable management and fungicide resistance.





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