Viticultural Information

Subject	Grapevine Leafroll Symposium 2.0
Description	This UC Davis Extension Course was held June 2, 2009 at Freeborn Hall, UC Davis. The links below contain video presentations in an easy-to-use format. No additional software is required. The recent and rapid spread of grapevine leafroll disease in California has alarmed growers and researchers, who are looking to better understand the potential for an epidemic wave of infection. Originally assumed to be largely graft-transmitted under California conditions, there is new research showing this is not the only method of transmission. Researchers with active programs on leafroll disease and its vectors have been brought from around the world to share their knowledge. An earlier symposium, "Grapevine Leafroll Disease - an Increasing Problem for California Vineyards" was held in June 2008. Presentations may be viewed by clicking on that topic or here. For information on other UC Davis Extension classes, visit http://extension.ucdavis.edu See also Leafroll Disease
People	Rodrigo Almeida Kent Daane Deborah Golino Adib Rowhani
Links	Grapevine Leafroll Disease Symposium 2.0 was videotaped in high quality by UC ANR Communication Services. These Adobe Presenter files do not require any special software to run, but please wait about 12 seconds after clicking a link for the video to begin. Controls for the slides are provided. "GRAPEVINE LEAFROLL DISEASE—OUR STATE OF KNOWLEDGE" Dr. Bob Martin, USDA-ARS Plant Pathologist "CALIFORNIA OBSERVATION OF LEAFROLL EFFECTS AND FIELD SPREAD" Dr. Deborah Golino, Director, Foundation Plant Services; Plant Pathology Specialist, Department of Plant Pathology, University of California, Davis "MEALYBUG POPULATIONS IN CALIFORNIA" Dr. Kent M. Daane, Cooperative Extension Specialist, Department of Environmental Science, Policy & Management, University of California, Berkeley "TRANSMISSION BIOLOGY OF LEAFROLL DISEASE" Dr. Rodrigo Almeida, Assistant Professor, Department of Environmental Science, Policy & Management, University of California, Berkeley "CHARACTERIZATION OF NEW VIRUSES IN GRAPEVINES USING NEXT GENERATION SEQUENCING" Dr. Maher Al Rwahnih, Department of Plant Pathology, University of California, Davis "TOWARDS A 'HIGH-THROUGHPUT' DETECTION OF GRAPEVINE" Dr. Fatima Osman, Department of Plant Pathology, University of California, Davis "SURVEY OF WILD GRAPES, WEED AND COVER CROP SPECIES FOR GRAPEVINE VIRUSES" Dr. Deborah Golino, Director, Foundation Plant Services; Plant Pathology Specialist, Department of Plant Pathology, University of California, Davis "NEW VIRUSES ASSOCIATED WITH LEAFROLL DISEASE" Dr. Adib Rowhani, Project Scientist/Plant Pathologist, Foundation Plant Services; Department of Plant Pathology, University of California, Davis "POMACE MANAGEMENT REDUCED SPREAD OF VINE MEALYBUGS" Rhonda Smith, University of California Cooperative Extension Viticulture Advisor, Sonoma County "CAN WE BREED ROOTSTOCK FOR LEAFROLL RESISTANCE?" Dr. Andy Walker, Professor, Department of Viticulture and Enology, University of California, Davis

This website is a work in progress of the University of California (UC) Division of Agricultural and Natural Resources (ANR) Integrated Grape Production Workgroup. It is designed to increase accessability to the work of UC researchers, including faculty, Cooperative Extension (CE) specialists, CE advisors, and staff. UC Researchers interested in contributing content are invited to contact Deborah Golino dagolino@ucdavis.edu to discuss possible contributions.