Pierce's Disease
Research Updates


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

May 2010 news archives

  • Steele's Pacini Vineyard: Old Vines in Talmage
    Ukiah Daily Journal May 30, 2010

    He discovered Pierce's Disease in the Santa Cruz vines which decimated them. Grahm eventually sold the Santa Cruz vineyard. Steve headed back to Mendocino ... and more ...

  • Napa Valley Fights to Control Pest
    Extranomical News May 17, 2010

    The Napa Valley Vintners have struggled for years to keep the glassy winged sharpshooter , an insect that is capable of spreading a grapevine killing disease ... and more ...

  • Viticulture briefs
    Santa Rosa Press Democrat May 16, 2010

    ... to continue for another five years a self-assessment program that finances research toward a permanent solution to the Pierce's disease virus. ... and more ...

  • Pierce's disease referendum passes
    Western Farm Press May 14, 2010

    The ballots are in and the votes counted on whether or not to continue the Pierce's disease (PD) assessment paid by California wine grape growers. ... and more ...

  • Grapegrowers vote to extend pest fight
    Napa Valley Register May 11, 2010

    The glassy-winged sharpshooter , pictured here, is about a half inch in length at actual size. Winegrape growers statewide have agreed to extend a ...

  • Wine industry votes to extend pest research
    Ukiah Daily Journal May 11, 2010

    ... program through which they tax themselves to pay for Pierce's Disease/ Glassy-Winged Sharpshooter control programs at the state's agriculture department. ... and more ...

  • State Department selects UCR entomologist for science fellowship
    Highlander Newspaper May 10, 2010

    Several of Miller's recent projects listed on his faculty website include the study of paratransgenesis, Pierce's Disease , pink bollworm control, ...

  • Viticulture briefs
    Santa Rosa Press Democrat May 09, 2010

    From winemaking terms such as "malolactic fermentation" and "punching the cap" to vineyard lingo like glassy-winged sharpshooter (chicharrita de alas ...

  • Viticulture briefs
    Santa Rosa Press Democrat May 02, 2010

    ... cast ballots to validate the recent referendum on whether to continue funding for the state's Pierce's disease/ glassy-winged sharpshooter program ...