1. CDFA Home
  2. Pierce's Disease Control Program
  3. Research Updates

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

OPTIMIZATION OF ADMIRE APPLICATIONS IN NORTH COAST VINEYARDS

  • Author(s): Byrne, Frank; Toscano, Nick; Weber, Ed;
  • Abstract: Xylem fluid samples from commercial vineyards treated with Admire were collected and analyzed for imidacloprid content in July 2005. Additionally, vines that had been treated with Admire at differential rates in a 2004 study were re-evaluated in 2005. Imidacloprid was not detected in most samples collected in 2005 and was usually at low levels when detected. These results corroborate our results from 2004 that indicate that the use of Admire in North Coast vineyards may have limited effectiveness compared to its use in other regions in California. Limiting irrigation in order to manage vine growth and berry size for premium wine production may prevent the effective use of Admire in some growing regions for control of sharpshooters.
  • Publication Date: Dec 2005
  • Journal: 2005 Pierce's Disease Research Symposium

Navigation

Actions

Researcher Login

Sponsors