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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

THE AREA-WIDE PEST MANAGEMENT OF GLASSY-WINGED SHARPSHOOTER IN TULARE COUNTY

  • Author(s): Appleby, Bill; Borges, Don; Churchill, Jesse; Haines, Dennis; Hardy, Sean; Kunkel, Gary; Stewart-Leslie, Judy;
  • Abstract: Tulare County has 113,000 acres of citrus, not all of which is infested with glassy-winged sharpshooter (GWSS) (Figure 1). With Pierces Disease (PD) documented in the county, and 62,000 acres of grapes, in 2005 we wanted to continue to suppress overall GWSS populations and keep the northernmost populations from moving into the countys un-infested citrus acreage. Citrus is the most important year-round reproductive host for GWSS in Tulare County, so treatments were focused in this acreage. Previous years area-wide treatments dropped GWSS populations significantly, therefore treatments in 2005 were relatively minimal in comparison.
  • Publication Date: Dec 2005
  • Journal: 2005 Pierce's Disease Research Symposium

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