UGA Extension Viticulture Blog

Grape root borer – REMINDER

We are still detecting grape root borer adults in north Georgia. This means that the adults are still active, with females potentially still laying eggs. While we are getting a little late for chemical control, if you have more than 35 days before harvest, you can use Lorsban 4E* (chlorpyrifos).This is…
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More wet and cool weather on tap

August is on the horizon, and you might be interested in the latest outlook for the next month. Unfortunately, I don’t see any big change in the pattern for the next month. Cooler and wetter conditions are expected to dominate the weather this week as the stream of atmospheric moisture…
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Crown Gall on Muscadine Grapes in North Georgia

I was at a muscadine meeting in Americus, GA earlier this week (Thursday), and I made comment on how I have never really observed significant crown gall on muscadine grapes in Georgia. I scheduled a muscadine grape visit with a producer near Ellijay, GA the next day, and I can…
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Vineyard tour scheduled for August 8th

The UGA Extension Viticulture Team will be holding a vineyard tour and research / practice discussion  in collaboration with several vineyards and wineries. The vineyard tour will take place on August 8th, 2018 and is sponsored by White County Farmer’s Exchange. We thank White County Farmer’s Exchange for their continued…
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Brief update on weather conditions for the next month

Is it ever going to stop raining? I’ve been getting this question a lot in the last couple of weeks, as farmers and everyone else get inundated by repeated rounds of thunderstorms that develop over the afternoon hours and grow in the late afternoon heat. I’ve gotten almost three inches…
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Black Rot Issues

We have been receiving multiple grape samples with black rot in our diagnostic clinic.  Only one or two infected grapes can provide a vast number of spores for secondary infections of clusters going forward.  Prevalent rainfall has made control difficult. The disease cycle will slow as grapes mature, but fruit…
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Downy Mildew, Powdery Mildew, and Black Rot Warnings

We are starting to see diseases pop up on both European vinifera and hybrid grapes.  For some of these, such as anthracnose and Phomopsis, much of the initial infection occurred much earlier.  The goal now would be to prevent secondary spread — especially to developing clusters.  Relative downy mildew, Sarah…
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