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Biological Control of Glassy-Winged Sharpshooter (GWSS)


PROBLEM: GWSS has spread rapidly in Ventura and Santa Barbara counties threatening citrus, avocado, and grapes.

SIGNIFICANCE: Tree crops are rendered unmarketable by heavy frass. Grapes are killed by Pierce‚Äôs disease vectored by GWSS. A variety of efforts, including genetically engineered resistant cultivars, parasite mass rearing, etc. are being heavily funded. However, the potential to leverage the effectiveness of the natural or mass–reared sharpshooter enemies by habitat manipulation has received little attention as a potential suppressive technique.

STRATEGY: Continue to observe ecology of GWSS and associated natural enemy complex and potential trap crops, report findings in the community and look for growers willing to participate in a demonstration.


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