(Dr. Tom Lowery – PARC)

This project has been approved but deferred. This project will evaluate several insecticides for efficacy against leafhoppers, cutworm, and click beetle. These include formulated extracts from neem, Azadirachta indica, horticultural oils, and the insect growth regulator buprofezin (Applaud) for leafhoppers, and spinosad (Success) and B.T. for the control of cutworm.

Three rates of each insecticide will be applied to replicated plots of grapes at PARC Summerland, or possibly to non-bearing grapes in commercial vineyards. In addition to efficacy data, numbers of beneficial insects and mites will also be counted.