- Author: Olivia Pisano
On Wednesday, March 27, 2013, growers, scientists, and grape enthusiasts met online for a National Clean Plant Network for Grapes (NCPN-Grapes) Special Webinar on Grapevine Red Blotch. Tim Martinson, Senior Extension Associate at Cornell University, organized and moderated the event which had 430 registrants when registration closed on Monday, March 25.
The webinar consisted of three presentations, each followed by a brief question and answer period.
Marc Fuchs, Grapevine Virologist at Cornell University, started the webinar with a presentation on...
- Author: Olivia Pisano
Do you still have questions about Red Blotch? You are not alone. One way to get your questions answered is to attended an upcoming webinar on the virus.
On Wednesday, March 27, 2013, Tim Martinson, Senior Extension Associate at Cornell University, will moderate an informational session featuring Cornell University virologist Marc Fuchs, University of California Cooperative Extension Farm Advisor Rhonda Smith, and University of California Davis Foundation Plant Services director Deborah Golino. This webinar is designed to be interactive, so your questions can be...
- Author: Olivia Pisano
Earlier this year, I blogged about Grapevine Red Blotch associated Virus (GRBaV) – a newly discovered virus associated with red blotchy leaves in grapevines which had been in the forefront of viticulture news since it was announced at the 17th Congress of the International Council for the Study of Virus and Virus-like Diseases of the Grapevine (ICVG) in October. This past Wednesday, February 20, Red...
- Author: Olivia Pisano
In November, Grapevine Red Blotch Disease was announced by University of California, Davis scientists, Mysore Sudarshana and James Wolpert. The disease was discovered after grapevines that appeared to be exhibiting symptoms of Leafroll Disease tested free of Leafroll and Rugose Wood viruses.
The symptoms include irregular red blotches on leaf blades of basal portions of shoots starting in late August, reddening of the secondary and tertiary veins, and a low Brix units. Occasionally reddening of leaf blades in the interveinal zones occurs,...
