Phil Brannen

  • Downy Mildew Alert

    Today, I observed downy mildew for the first time this year. It was on Lenoir vines in west Georgia, and this indicates that producers should be scouting for it throughout the state. In addition, if you have not already done so, I would consider incorporating highly efficacious materials such as Zampro, Revus, Ridomil Gold MZ…

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  • Powdery Mildew Alert

    Powdery mildew is just starting to show up on untreated plants in the research vineyard at Blairsville, GA. The photograph below was taken today, but infections likely started occurring some time ago. I hope you will not see it yet in well managed vineyards, but recent rains and other difficulties may have hampered spray programs.…

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  • Fungal Resistance Management Videos

    Much of the wine grape pathology research we have conducted in Georgia over the last 2-3 years has been associated with resistance management of fungal pathogens such as downy mildew, powdery mildew, Botrytis and others. Alternation or tank-mixing of different fungicide classes is critical for prevention of resistance development. Under the direction of Dr. Walt…

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  • Response to Cold-damaged Vines

    Vineyards in many of the northern counties of Georgia have received cold damage on multiple occasions this year.  The most recent damage occurred 10 May, which means that grapes were phenologically more advanced that one would have observed with past frost/freeze events.  In fact, this is the latest event of this nature that I remember…

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  • COVID 19 Assistance for Farmers

    See below for a message from our Associate Dean relative new funds that are available for helping farmers. I am not sure whether wine grape producers could benefit from these funds or not, but I am sure that muscadine producers for fresh market consumption could benefit. At a minimum, I would follow up to ask…

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  • It is time for tissue sampling in grapes.  Student workers were taking samples today in our research vineyards, as we are in full bloom in the Athens area.  I suspect that the bloom will vary by variety and location, but all of us are close.  I am providing more information than you might want for…

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  • Mark Hoffman, viticulturist for NCSU, sent me the following information this morning. There will be a pertinent webinar on responding to COVID in winery operations. The webinar will take place on Monday, May 18th from 12-1:30 PM, and is titled “Re”wine”ing the Clock in a Post-COVID World: ensuring personal safety & production efficiency as winery operations…

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  • Powdery Mildew Resistance Article

    Brooke Warres, a graduate student in the Plant Pathology Department of the University of Georgia, has been researching powdery mildew resistance to QoI and DMI fungicides. The attached is a news article that she composed, and it will be distributed through various outlets. However, you can have a look at it through the attached. I…

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  • The Grape Spray Program Design Workshop for March 17, 2020 at Cartecay Vineyards in Ellijay GA has been cancelled due to Coronavirus issues. We are sorry to announce this, but it is necessary in order to keep everyone as safe as possible. We will reschedule at some point, but please contact your local county agent…

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  • Grape Spray Program Design Workshops Reminder

    UGA Extension Viticulture Blog | Grape Spray Program Design Workshops Disease and insect control are critical components of an IPM program for grapes. Vineyard managers ask questions yearly relative how to set up and administer an efficacious program for management of diseases and insects. In these workshops, vineyard managers will be given the skills and…

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