We would like to report the status of red blotch and leafroll 3 viruses in California vineyards. The graph on the right shows the percentage of positive samples in all samples tested at Agri-Analysis for past three consecutive growing seasons. This set data represents results from a large number of grapevines from various sources including existing vineyards and new planting materials. We can see that during the past three planting seasons, the infection rate of red blotch virus varied between about 15% to 25% while the infection rate of leafroll 3 virus hoovers around 10%. These results are significant due to the large numbers of samples tested. We continue to encourage growers to be vigorous to test new planting materials so as to prevent any infected vines from being planted in new vineyards.
Please contact us for further details at firstname.lastname@example.org or (800)506-9852.
|Dr. Alan Wei
930 Riverside Parkway, Suite #30
West Sacramento, CA 95605
Download Red Blotch Brochure
|Red Blotch and Leafroll 3 Virus Status Report in California Vineyards
The percentage of positive samples in all samples tested at Agri-Analysis for past three consecutive growing seasons. The infection rate of red blotch virus varied between about 15% to 25% while the infection rate of leafroll 3 virus hoovers around 10%. This set data represents results from a large number of grapevines from various sources including existing vineyards and new planting materials.
2015 APS Annual Meeting, Pasadena, CA August 1-5.
The 2015 APS Annual Meeting will be held in Pasadena, CA August 1-5. For further details, please visit http://www.apsnet.org/meetings/annual/Pages/default.aspx/.
18th Congress of the International Council for the Study of Grapevine Viruses September 7-11.
18th Congress of the International Council for the Study of Virus and Virus-like Diseases of the Grapevine (ICVG) will be held in Ankara on September 7-11. For further details, please visit http://icvg2015.org/.
Innovative Reagent Detects Broader LR3 Variants
Agri-Analysis has developed a new reagent that can detect broader leafroll 3 variants than the current commercial reagent (BIOREBA). The new reagent is being used by state certification programs, universities in several countries including Australia, New Zealand, France, Israel in their testing and monitoring of GLRaV-3 in vineyards and nursery stocks. To read more detail, please visit Wine Industry Network or download a copy of our news release.
Red Blotch Diseases and Virus Status in CDFA Certified Nursery Blocks
An article by James Stamp and Alan Wei, Wine Business Monthly, August, 2014. This article may be downloaded from any of the sources below.
2. Napa Valley Grapegrowers
3. Wine Industry Network
4. Lodi Wine Growers
5. Wine Business Monthly
6. Vineyard Team
BROCHURES AND LITERATURE ON GRAPEVINE RED BLOTCH VIRUS.
Agri-Analysis Brochure and other literature is online
UCDavis/USDA-ARS Brochure is available online
"The Impact of Grapevine Red Blotch Virus" by Stamp and Wei in March, 2013 WINE BUSINESS MONTHY. With publisher's permission.
SUPPORT RED BLOTCH DISEASE RESEARCH
Agri-Analysis is a proud contributor to the American Vineyard Foundation and to UC Davis for grapevine red blotch research. Please contact S cott at AVF, Michael Sipiora or Bob Steinhauer.