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Pierce's Disease
Research Updates

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What is Pierce's Disease?

Pierce's Disease is a bacterial infection, which is spread by bugs that feed on grapevines, particularly the "glassy winged sharpshooter." Grapevines that become infected with PD can quickly become sick and die.

glassy-winged sharpshooter

PESTICIDE SCREENING AGAINST THE GLASSY-WINGED SHARPSHOOTER, HOMALODISCA COAGULATA (SAY), USING COMMERCIALLY AVAILABLE BIORATIONAL, ORGANIC, AND REDUCED RISK PESTICIDES

  • Author(s): Bethke, James; Redak, Richard;
  • Abstract: Herein we summarize the results of multiple insecticide trials designed to evaluate biorational, organic and reduced risk insecticides. Our results indicated that few of the biorational/organic/reduced products tested would be applicable for glassy-winged sharpshooter control or eradication (poor mortality, slow knock down activity, poor residual activity). None of these products tested achieved 70% mortality in both adult and nymphal trials. Rotenone and 10% rosemary oil (Ecotrol) may be the only exception when used strictly against adults; however, their level of control is below that of the pryrethroids, chloronicotinyls, organophosphates, and carbamates. With the possible exception of rotenone and pyrethrins (PyGanic), conventional pyrethroids, organophosphates, and chloronicotinyls were more effective than all other compounds tested.
  • Publication Date: Aug 2003
  • Journal: 2003 Pierce's Disease Research Symposium

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