Thursday, June 10, 2021
Periodical cicadas causing injury in vineyards and orchards
Hello, everyone, Just a note on something many of you are aware of - periodical cicadas are now actively laying eggs in grapevines in northern Virginia vineyards. Mature vines have been attractive as well as young vines. Adults are normally active for about 6 weeks. The first report of adults emerging from soil was on April 28, but this was quickly followed by a period of cool temperatures, greatly slowing cicada development. Just a few words on effective materials. Pyrethroids like Danitol and Baythroid are among the most effective materials. Assail, Sevin and Surround also have activity - some materials that are somewhat less effective have the benefit of less risk of inducing secondary pest outbreaks - especially mealybugs and mites. If you opt to use pyrethroids pay close attention to secondary pests for the subsequent weeks. More later, Doug
See Asian Giant Hornet Fact Guide by James Mason in Virginia Tech’s Department of Entomology for a summary of risk, and an excellent pairi...
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