news and research about Pierce's Disease

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.

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Jul 2009 news archives

  • It's back: Sharpshooter returns
    Inland Empire News on July 8, 2009

    It's been 11-years since the glassy - winged sharpshooter began devouring grapevines in Temecula's wine country. Forty percent of the vineyards were replanted ......

  • House passes important research programs for agriculture
    Lake County News on July 11, 2009

    “We cannot let up in the fight against Pierce's disease, and its vector, the glassy winged sharpshooter ,” said Congressman Thompson. ......

  • Backyard bugs
    Santa Rosa Press Democrat on July 10, 2009

    These beneficial insects will go after glassy - winged sharpshooters , the western flower thrip, black aphids, white flies and leaf hoppers. ......

  • Grape stomps celebrate wine harvests (Greater Houston Weekly)
    Grape stomps celebrate wine harvests on July 13, 2009

    Several local wineries will hold “grape stomps” celebrating the harvest. Pleasant Hill Winery near Brenham will host grape stomps each weekend from July 17 through Aug. 9...

  • Cotton-to-wine grape transition pays off
    Southwest Farm Press on July 13, 2009

    “Some vines have tested positive for Xylella fastidiosa , the causal organism of Pierce's disease on the High Plains,” Hellman said...

  • Bonny Doon Vineyard's Randall Grahm makes a bid to be known for wines, not wackiness (San Jose Mercury News)
    Mercury News on July 8, 2009

    Bonny Doon Vineyard founder Randall Grahm is continually reinventing his wines and his winery.He started Bonny Doon in 1981 with the aim of making great pinot noir...

  • Winery in Temecula was among first, now celebrating 40 years
    Press-Enterprise on July 22, 2009

    Production fell after Callaway lost half its vineyards to Pierce's Disease , which kills vines choking off their water supply, in 2000, and Allied began ... and more...

  • Bug Watch – Ag Pests Feel the Heat
    Valley Voice on July 22, 2009

    The GWSS can carry the virulent Pierce's Disease that kills off grapevines. The disease had taken a hold on vineyards in the Edison area in part because it...

  • Commentary: Pythons must be banned
    News & Observer on July 10, 2009

    Commentary: Pythons must be banned News & Observer ... the Great Lakes to the glassy - winged sharpshooter , a bacteria-carrying insect that has caused nearly $40 million in losses in California's wi...

  • Another View: Invasive animal species cause threats, raise costs
    Pasadena Star-News on July 17, 2009

    ... the Great Lakes to the glassy - winged sharpshooter , a bacteria-carrying insect that has caused nearly $40 million in losses in California's wine country. ... and more...

  • Report: Sacramento County crops worth $358M in '08
    Bizjournals.com on July 30, 2009

    The commissioner also reported that for the first time since 1999, no glassy - winged sharpshooters were found in Sacramento. The insect, which is not harmful ... and more...