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Single GWSS Adults Trapped at Two Locations in August

In August two single glassy-winged sharpshooters were found in two different counties in Northern California. The first was found on August 9th, on a trap in the city of Sutter Creek in Amador County. The second was found on August […]

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Single GWSS Found in San Luis Obispo

On Thursday, July 13, 2017 one glassy-winged sharpshooter (GWSS) was found on a trap within the city of San Luis Obispo. The location of this find is about four miles from where a previous GWSS infestation was eradicated in December […]

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Governor Brown Signs State Budget With $5 Million Designated for PD Control Program

On June 27, Governor Jerry Brown signed the 2017-18 state budget, which included a $5 million one-year allocation for the CDFA’s Pierce’s Disease Control Program (PDCP). The $5 million will be used to support the PDCP’s mission, which is to […]

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CDFA Secretary Approves PD/GWSS Board’s Recommendation for 2017 Winegrape Assessment Rate

The PD/GWSS Board voted during their June 19 meeting to recommend the winegrape assessment for the 2017 harvest be set at $1.50 per $1,000 of value. Following the meeting, that recommendation was forwarded to and approved by CDFA Secretary Karen […]

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UC Davis Announces Pre-Release of Five New PD-Resistant Winegrape Cultivars

      Pierce’s disease resistant winegrape cultivars. The cultivars are being released for testing purposes only at this time, giving interested nurseries the opportunity to begin propagation for testing purposes prior to official release. These new winegrapes were developed […]

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Proper Training Key to Success of the ATP Program

Once a year, usually in the spring, CDFA representatives conduct field training sessions with the staff of nurseries that ship under the Nursery Stock Approved Treatment Program (ATP). The training is conducted to educate nursery workers on the ATP which was […]

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PD/GWSS Board Elects New Officers

Pictured are past PD/GWSS Board Chair Nat DiBuduo (left) and newly elected Board Chair Pam Bond. New officers were elected at the January 23, 2017 joint meeting of the PD/GWSS Board and the PD Advisory Task Force in Sacramento. Pam […]

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PD/GWSS Board Makes Recommendation for 2016 Winegrape Assessment

The PD/GWSS Board voted during their June 21 meeting to recommend raising the winegrape assessment for the 2016 harvest to $1.25 per $1,000 of value. The rate had been set at $.75 per $1,000 of value since 2013 but the […]

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PD/GWSS Board Tastes Wine Made From PD-Resistant Grapevines

After the April joint meeting of the PD/GWSS Board and the PD Advisory Task Force, members were invited to the offices of the California Association of Winegrape Growers to taste wines made from grapes grown from PD-resistant grapevines. For over […]

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Leafroll Receives Designation as a Threat To Winegrapes

The PD/GWSS Board has designated grapevine leafroll disease as a serious threat to California winegrapes. The disease and its vectors are now eligible for Board funding for research and outreach. Since 2010, the Board has had the ability to use […]

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PD/GWSS Referendum Passes

CDFA announced this week that the PD/GWSS Referendum has passed with 83.44 percent of California’s winegrape growers voting in favor of continuing the assessment for another five years. “California’s winegrape growers have again voted overwhelmingly in support of continuing the […]

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PD/GWSS Board Recommends Funding of 11 Research Projects

At their April meeting the PD/GWSS Board voted to recommend the funding of 11 research projects including six for Pierce’s disease (PD), one for the brown marmorated stink bug (BMSB), two for red blotch (GRBaV), and two for vine mealybug […]

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PD/GWSS Referendum Vote Extended to June 10

The CDFA announced on Friday, May 8 that it is extending the voting deadline for the PD/GWSS referendum to June 10. This is being done to ensure the minimum eligible grower participation rate of 40 percent required by law for […]

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PD/GWSS Referendum Ballot Mailing – Date Change

The date for the mailing of the ballots for the PD/GWSS assessment referendum has been changed to the week of April 6. In January a tentative date of March 30 had been set. “The task of building an accurate list […]

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Fifteen Years of Success

From vineyards in Southern California devastated by Pierce’s disease (PD), spread by the glassy-winged sharpshooter, to successful field trails with testing winegrapes that can standup to PD, is has been a long 15 years since the PD/GWSS board was established. […]

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CDFA Announces Dates for PD/GWSS Winegrape Grower Referendum

FOR IMMEDIATE RELEASE CDFA Announces Dates for PD/GWSS Winegrape Grower Referendum Sacramento, Calif., Feb. 2, 2015 – The California Department of Food and Agriculture (CDFA) has announced important dates for this year’s vote on the continuation of the statewide Pierce’s […]

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PD/GWSS Board Votes on 2014 Winegrape Assessment Rate

PD/GWSS Board Votes on 2014 Winegrape Assessment Rate   CDFA Secretary Karen Ross has approved the recommendation of the PD/GWSS Board that the winegrape assessment rate for the 2014 harvest be set at $0.75 per $1,000 of crop value. This keeps […]

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AB 1642 Update

In mid-June the Senate Agriculture Committee members voted unanimously to pass legislation re-authorizing the Pierce’s Disease Control Program, the PD/GWSS Board, the PD Advisory Task Force, and the winegrape assessment. If enacted, AB 1642 would provide for a referendum to […]

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Inspectors Find Viable GWSS Eggs in Nursery Shipments

Glassy-winged sharpshooter (GWSS) eggs were found at a retail nursery in Napa County, then more eggs were found in nursery shipments in three other Northern California counties. Nursery shipments arriving in Northern California from GWSS-infested Southern California are routinely inspected […]

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International Symposium on the European Outbreak of Xylella Fastidiosa in Olive

The Institute of Plant Virology (CNR, Bari), the Department of Soil, Plant and Food Science of the University of Bari, the Research Center “Basile Caramia” (CRSFA) of Locorotondo, Bari, and the National and Regional Plant Health Services are pleased to […]

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PD Legislation Introduced

Assemblyman Wesley Chesbro (D-Arcata) has introduced AB 1642, legislation to re-authorize the Pierce’s Disease Control Program (PDCP), the PD/GWSS Board, PD/GWSS winegrape assessment and the PD Advisory Task Force. The bill is being sponsored by the California Association of Winegrape […]

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Call for Reports for the Proceedings of the 2013 PD Research Symposium

The 2013 Pierce’s Disease Research Symposium will be held December 16-18, 2013, in Sacramento, California. As in prior years, the CDFA PD Control Program (PDCP) is preparing a publication (“Proceedings”) that will consist of progress reports for research projects being […]

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PD/GWSS Board Votes on Red Blotch

During the June joint meeting of the PD/GWSS Board and the PD Advisory Task Force, the board voted on whether or not to designate red blotch disease as a threat to California’s winegrape industry. The vote tied 6 to 6. […]

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2013 PD Assessment Rate Set

CDFA Secretary Karen Ross has set the Pierce’s disease winegrape assessment for the 2013 harvest at $.75 per $1,000 of value, based on the recommendation made by the PD/GWSS Board at its June board meeting. This rate represents a decrease […]

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GWSS Infestation Update

Santa Clara County There have been no GWSS finds in the Capitol area of San Jose since November 2012. San Luis Obispo County There have been no finds in the San Luis Obispo infested area since August 21 2012. This […]

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New Research Video Online

Dr. Elaine Backus, an entomologist at the USDA Agricultural Research Service’s San Joaquin Valley Agricultural Science Center in Parlier, is learning how glassy-winged sharpshooters transfers Pierce’s disease causing bacteria to grapevines. This research may lead to important information for developing […]

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New pest found in California vineyards

The Virginia creeper leafhopper has been found in vineyards from the Oregon border to the northern Sacramento Valley, but so far has not made its way to the storied vineyards of Napa or Sonoma counties, according to an article in […]

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PD/GWSS Research Symposium Brings Researchers from Around the World Together

Sacramento, Calif. — December 19, 2011 – More than 100 people from around the world attended the 11th annual Pierce’s Disease Research Symposium in Sacramento last week, giving top researchers the opportunity to meet and discuss the latest progress in […]

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CDFA Announces Results of PD Referendum

Sacramento, CA, May 10, 2010 — The ballots are in and the votes have been counted to decide on whether or not to continue the Pierce’s disease (PD) assessment paid by California’s winegrape growers. According to the California Department of […]

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CDFA PD/GWSS Board Announces Winegrape Grower Referendum

Sacramento, Calif., March 1, 2010 – The California Department of Food and Agriculture (CDFA) Pierce’s Disease and Glassy-Winged Sharpshooter (PD/GWSS) Board has announced that this spring winegrape growers will be given the opportunity to vote on the continuation of the […]

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Pierce’s Disease – A Decade of Progress

Are your association’s members wondering what is happening on the Pierce’s Disease (PD) or the glassy-winged sharpshooter (GWSS) front? How about where research is headed and what tools are being developed that they can use against PD/GWSS in the future? […]

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PD/GWSS Board Announces Request for Research Proposals

Sacramento, Calif., November 24, 2008 – The California Department of Food and Agriculture (CDFA) Pierce’s Disease and Glassy-winged Sharpshooter Board, in partnership with the University of California (UC) Pierce’s Disease Grant Program, is accepting proposals for research projects on Pierce’s […]

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Pierce’s Disease Researchers to Gather at Symposium

Sacramento, Calif., May 21, 2008 – The 2008 Pierce’s Disease (PD) Research Symposium, which brings together researchers from around the world, will again convene in San Diego this year on December 15, 16 and 17. “This meeting provides an excellent […]

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PD/GWSS Board to Refocus Research Efforts

Sacramento, Calif., September 6, 2007 – Significant advances have been made in Pierce’s disease/glassy-winged sharpshooter (PD/GWSS) research since last reviewed in 2004, but gaps in  knowledge still need to be addressed, according to the PD/GWSS Research Scientific Review released last […]

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PD/GWSS Board Votes to Lower the 2007/2008 PD Assessment to $1.50 per Thousand

Sacramento, Calif. — July 5, 2007 – To enable continuing research efforts aimed at controlling the spread of Pierce’s disease (PD) and the glassy-winged sharpshooter (GWSS), the PD/GWSS Board at their June 28 meeting has recommended to California Department of […]

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Pierce’s Disease Research Symposium Brings Together Research Community

Sacramento, Calif., May 31, 2007– For the seventh year, researchers from around the world will convene in San Diego to attend the annual Pierce’s Disease (PD) Research Symposium to present and discuss their joint research efforts in finding a solution […]

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14 Research Projects Funded by Pierce’s Disease Assessment

Sacramento, Calif., May 9, 2007 –   California Department of Food and Agriculture (CDFA) Secretary A.G. Kawamura has approved the Pierce’s Disease/Glassy-Winged Sharpshooter (PD/GWSS) Board’s recent recommendations to fund 14 PD-related research projects beginning in 2007/2008.             Just over $2 million […]

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Pierce’s Disease Research Symposium Focuses on Progress

Sacramento, Calif., December 11, 2006 – For the sixth year, researchers from around the world met the last week of November during the annual Pierce’s Disease (PD) Research Symposium in San Diego to discuss their research efforts in finding a […]

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PD/GWSS Board Selects Nancy Irelan as Research Director

Sacramento, Calif., Oct. 2, 2006 – California’s Dept. of Food & Agriculture’s (CDFA) Pierce’s Disease/Glassy-Winged Sharpshooter (PD/GWSS) Board, which has funded over 120 research projects relating to PD/GWSS, announces the appointment of Nancy Irelan as research director. Irelan will provide […]

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CDFA PD/GWSS Board Web Forum Establishes Internet Presence

Sacramento, Calif, Sept 1, 2006 – The PD/GWSS Board has established a new Internet forum aimed at creating improved lines of communications between all those involved in the ongoing battle against Pierce’s disease and the  Glassy-Winged Sharpshooter. The websites address […]

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Opportunity for Growers to Mix with Researchers Provided at PD/GWSS Science Forum

Sacramento, Calif, June 12, 2006 – California’s winegrape growers will get their chance to talk one-on-one with Pierce’s disease (PD) researchers on June 29, during a one-day PD/GWSS Science Forum taking place at this year’s American Society of Enology & […]

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Leading Pierce’s Disease Researcher Set to Retire

Sacramento, Calif, May 11, 2006 – One of the world leaders in Pierce’s disease (PD) research, Dr. Alexander (Sandy) Purcell, will be retiring this June from U.C. Berkeley after 35 years of research on the disease. Over the years when […]

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