University of California
Sonoma County
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Sonoma County Grape Day is an annual program, held each February, that provides research-based information on issues important to the production of coastal winegrapes. The program is presented by UC Cooperative Extension and sponsored by the Sonoma County Winegrape Commission.
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Grape Day Presentations
Sonoma County Grape Day - Research Summaries
- 2013: Pinot Leaf Curl - a nitrogen disorder - Rhonda Smith
- 2012: Pinot Leaf Curl - Rhonda Smith
- 2012: European Grapevine Moth in 2012 - Lucia Varela
- 2012: Biology, Epidemiology, and Control of Powdery Mildew - Doug Gubler
- 2012: Botrytis Bunch Rot - Doug Gubler
- 2012: Powdery mildew biology and control; An Eastern Perspective - Wayne Wilcox
- 2012: Understanding and Controlling Botrytis - Wayne Wilcox
- 2011: Looking for Lobesia botrana in Infested Clusters Processed for Wine Making
- 2009: Update on effects of CPPU on fruit set in Merlot
- 2008: Effects of CPPU, a synthetic cytokinin, on fruit set and yield
- 2007: Berry Shrivel Research Update - 2005 and 2006 investigations
- 2006: 2005 Trial - Effect of boron fertilizer applications on grapevine pruning wounds on bud break, boron tissue levels and vine yield
- 2006: 2005 Hang Time Evaluation
- 2005: Fate of Vine Mealybug in Winery Waste
- 2004: Berry Shrivel Research Update
- 2003: Berry Shrivel
- 2002: Utilization of Composted Mulch for Erosion Control in Hillside Vineyards
