Virginia Grape Disease Updates

Thank you for those of you who were able to join the webinar today. You can access the slides from today from the link below (will open a new window with a pdf file). PSU Grape management reminders from bloom through bunch closure (5/27/20) Please see this posting for how to access the Google sheet that I showed during the webinar.

It took a while, but I think I figured out how to share the recodings. If you click the line below, each opens a new window with the video recording of the workshop. If you are wondering why I am pausing here and there, I was reading questions from the chatbox. 1) GrapeIPM.org short training and Q and A (10 April 2020). 2) Grape fungicide planning workshop (24 March 2020).

Thank you for participating in our bi-weekly meeting! Here's a slide set from my portion of the meeting (will open a pdf file). The spreadsheet examples I showed during my presentation can be accessed from the "Resources" tab on your right-hand side (or at the bottom, if you are accessing using a tablet or phone). ( or click here ) You can edit it after downloading it onto your device (file > Download >, please see the picture below) ( and then you may upload it to Google, if you choose to do so).

Unfortunately, many of our vines suffered from frost events that happened over the past weekend (and this morning for some of us). I think I lost about 30-40% of Chardonnay shoots. :(  Here are some disease management tips for dealing with frost-damaged vines, especially if your vines have shoots with several to many leaves open. Minor damage: E.g., < 15% of shoots affected. You probably do not need to alter your spray schedule. Moderate damage: E.g., 20-50% sporadic damage throughout a block. Some shoots are heavily damaged, but others are OK. You may keep your regular spray schedule. If we have an extensive rain event(s), there is some risk of Botrytis infection on the damaged shoots. This pathogen can produce spores on the dead tissues. If you are concerned about a potential Botrytis infection (i.e., you have a Botrytis-prone cultivar and the weather forecast says there will be a big rain event coming soon), you may want to use either captain or copper instead of mancozeb for...

Thank you for joining our virtual vineyard meeting today. Let's hope that we won't see a bad frost event over this weekend... Please find the link below for my portion of the presentation.  Nita - Early season disease management As Tony mentioned at the meeting, if you have any questions, please send me an email, which is the best way to contact me right now.

Here's a snip from Tony's Viticulture Note newsletter: If you wish to have a link to the meeting, please send me an email. (Due to the security concern, I prefer not posting the link on the website.) Looking forward to seeing you virtually! Virginia Cooperative Extension  will host a series of virtual vineyard meetings using Zoom video conferencing starting Thursday, 7 May. We are planning for the meetings to run about 90 minutes and will feature updates from Virginia Tech specialists, with ample time allowed for questions, answers/discussion.  The meeting on 7 May will start at noon and meeting invitation details are shown below . If you are new to using Zoom, you can access the meeting with desktop or mobile devices by clicking the link after "Join Zoom Meeting". You may also call in using phone numbers shown below in the invitation, but be advised that these are NOT toll-free calls. Planned topics for Thursday, May 7th include: - frost updates and early ...