Workshop To Address Grapevine Leafroll Disease
August 28, 2012 The Washington State University (WSU) Viticulture & Enology Program and Washington Association of Wine Grape Growers are hosting an interactive workshop on Wednesday, Sept. 5 in Prosser, WA. “Vine to Wine – How Grapevine Leafroll Disease Affects Grapes And Wines” will address how innovative, multidisciplinary research at WSU is unearthing new knowledge on impacts of grapevine leafroll disease on grape yield and quality and how the quality of berries from infected plants is impacting wine quality. This research-based knowledge is enabling wineries and growers to better comprehend the complex nature of the disease under conditions in Washington vineyards and develop strategies to mitigate negative impacts on fruit and wine quality.
Here is the schedule for the event:
1:00 PM – Check In
1:15 PM – How Grapevine Leafroll Disease Impacts Vine Health, Fruit Yield And Quality
What we know based on research performed in Washington vineyards and at WSU.
Dr. Naidu A. Rayapati, Associate Professor (Virology), WSU-IAREC
2:00 PM – Demonstration of Sampling and Virus Testing Protocols
How samples are collected for virus testing and what methods are used to document virus(es) in grapevine samples.
Dr. Naidu Rayapati, Dr. Femi Alabi and Sudarsana Poojari
2:30 PM – Visual Impacts of Leafroll Disease on Clusters and Differences in Sugar Content
Touch, taste and feel impacts of leafroll disease on berries.
Dr. Naidu Rayapati, Dr. Femi Alabi and Sudarsana Poojari
3:00 PM – Break (and preparation for wine tasting)
3:15 PM – Blind Wine Tasting
Taste Merlot wines made from grapes harvested from grapevine leafroll disease infected plants and healthy plants in 2010 and 2011 with a discussion of impacts on wine quality, characteristics, and differences between vintages.
Dr. Jim Harbertson, Federico Casassa, Dr. Richard Larsen, Dr. Thomas Henick-Kling
4:00 PM – How Grapevine Leafroll Disease Impacts Wine Quality
A presentation of what we know based on research from 2010 and 2011.
Dr. Jim Harbertson, Associate Professor (Enology), WSU-IAREC
4:30 PM – Questions and Answers
Discuss plans for research and education on grapevine leafroll disease in Washington.
Dr. Thomas Henick-Kling, Director, WSU Viticulture & Enology Program, Dr. Naidu Rayapati, Dr. Jim Harbertson
4:45 PM – Adjourn
For more information, contact the Washington Association of Wine Grape Growers at 509-782-8234 or go to www.wawgg.org.
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