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

January 2012 news archives

  • Texas wine industry suffering after budget cuts
    WOAI January 31, 2012

    Especially cuts in research to prevent problems like Pierces disease - a devastating bacteria carried by bugs. Holmberg put it this way. "You dont want to see that slip because there are things that will not be good for growing grapes in Texas. and more ...


  • State cuts affecting Texas wine industry
    WOAI January 31, 2012

    Especially cuts in research to prevent problems like Pierces disease - a devastating bacteria carried by bugs. Holmberg put it this way."You dont want to see that slip because there are things that will not be good for growing grapes in Texas. and more ...


  • On the whole, milder winter works in favor of the 2012 grape crop
    Patriot-News January 29, 2012

    (blog) "In southern regions, such as North Carolina and southern Virginia, is Pierces Disease . To decrease the spread of that disease, its really preferable that we get a couple of nights below 15 degrees to try and keep that disease in check ...


  • UCR scientist tackles Rwandan coffee scourge
    North County Times January 16, 2012

    UCR scientist tackles Rwandan coffee scourge North County Times The university has developed a reputation for expertise in combating agricultural pests, such as the glassy winged sharpshooter that threatened grape vines in Temecula in the late 1990s and early 2000s. The university focuses on threat ...


  • Expert: Bugs fight bugs best
    The Desert Sun January 12, 2012

    Expert: Bugs fight bugs best The Desert Sun He and fellow scientists found the combatant for the glassy-winged sharpshooter , which threatened Californias wine and table grape industries in the 1990s. Since releasing a parasitic wasp into the vineyards about 10 years ago, there has been a 93 ...


  • With or without climate change, Napa maintains green focus
    Napa Valley Register January 08, 2012

    With or without climate change, Napa maintains green focus Napa Valley Register Historically, the countys agricultural community has done a tremendous job dealing with more immediate threats like invasive pests, most recently the glassy-winged sharpshooter , the light brown apple moth and the Europ ...


  • Napa State, housing top county's legislative agenda
    Napa Valley Register January 06, 2012

    Napa State, housing top countys legislative agenda Napa Valley Register County officials would also like to see funding for the continued battle in the Napa Valley against the glassy-winged sharpshooter and the European grapevine moth. They would like to see the state and federal government adopt l ...


  • Grape growers fend off thieves, pests
    Fresno Business Journal January 05, 2012

    Grape growers fend off thieves, pests Fresno Business Journal The sharpshooter spreads Pierces Disease that can stunt growth and wipe out large areas of grapevines. One of the problems with the two kinds of sharpshooters is that they tend to move from citrus and alfalfa crops to grapevines ...


  • Business is going 'grape' at Dry Comal Creek Vineyards
    Herald Zeitung January 05, 2012

    Business is going grape at Dry Comal Creek Vineyards Herald Zeitung But in 2000, tests confirmed that the vineyard was infested with Pierces disease , a bacterial pathogen that kills grape vines. The growers twice ripped out entire crops of diseased vines. “We had to decide to fold up shop or find ...


  • California wine industry finding friend in western bluebird
    Western Farm Press January 04, 2012

    California wine industry finding friend in western bluebird Western Farm Press Jedlicka found that placing nesting boxes on vineyard plots lures in populations of the entirely insectivorous bird, which in turn can fend off insect-borne blights such as the deadly Pierces disease . After placing piec ...