Mark Bolda, University of California Cooperative Extension Farm Advisor in Santa Cruz County, has posted the results of a recent efficacy trial comparing organic management tools for SWD. According to this post, Pyganic and Entrust appeared to provide control of SWD in raspberries. Both of these materials are OMRI listed (organically acceptable).
Results of Trial Testing the Efficacy of Several Organically Registered Pesticides for Control of Spotted Wing Drosophila in Raspberry
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