Pierce's Disease
Research Updates

piercesdisease.cdfa.ca.gov

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

EPIDEMIOLOGY OF PIERCES DISEASE IN SOUTHERN CALIFORNIA: IDENTIFYING INOCULUM SOURCES AND TRANSMISSION PATHWAYS


  • Author(s): Cooksey, Donald; Costa, Heather;
  • Abstract: Knowledge of the source of disease inoculum from vectors, whether from inside or outside the vineyard, is critical to development of management strategies for disease control, such as the choice and management of plant species surrounding vineyards. In addition, there is little information available on the relative ability of the glassy-winged sharpshooter to acquire or transmit the Pierces disease pathogen from vine to vine, or from alternate hosts to grape. Because in many cases the vineyards of the Temecula area are in close proximity to citrus groves, it is critical to know the relative inoculum pressure that citrus and other plant hosts may provide in that area.
  • Publication Date: Dec 2002
  • Journal: 2002 Pierce's Disease Research Symposium