Pest management Guidelines
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Many of the fungicides utilized for Botrytis management are no longer efficacious due to resistance development in this fungus. Now is a great time to collect Botrytis samples for fungicide-resistance testing. While the funds last, Botrytis resistance testing is free for wine grape producers in most of the Southeast (Alabama, Arkansas, Georgia, Louisiana, North Carolina,…
Posted in: Bunch Grapes -
Pierce’s disease (PD) is a threat to vineyard sustainability in some parts of the southeastern US. PD is particularly a threat to susceptible cultivars planted in vineyards that are located in low-elevation, “warmer” micro-climates. PD was observed in several vineyards in late summer/fall 2019. We have experienced yet another moderate winter. We may thus continue…
Posted in: Uncategorized -
We often think about pruning as a winter activity. However, this process starts much earlier in the year. Vines under stress are much more easily identified during the summer. Residual effects from cold damage or trunk disease issues, while they can appear early in the season, are often becoming more apparent as we move forward…
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Some of you may have already conducted leaf removal in your vineyards, but some of you are now getting into the early fruit development stage where leaf removal is considered more of the ‘standard’ time point. See some of lovely pictures of some fresh leaf removal from Bill Cox. Q: Why remove leaves? A: Fruit-zone…
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Out in the Watkinsville Hort Farm this morning I noticed some Japanese beetles – the season is upon us! Below is some information that Dr. Brett Blaauw posted previously that some of you may find helpful. Let me know what ya’ll are seeing in your own vineyards – how has it compared to previous years?…
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Yesterday was the demonstration of the trunk injection of a bacteriophage product registered for control of Pierce’s disease. Clark MacAllister was able to coordinate the company representatives to visit for the demonstration. For those of you unable to make it out, yesterday, I took some videos of the injection process and recorded some questions (and…
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In 2022 an injectable bacteriophage product was registered for use in Georgia for control of Pierce’s disease. Inphatec, the company behind the XyliPhi-PD, will have a representative demonstrating how to use the product and its applications on Tuesday, April 11th from 10:00am-11:30am at Three Sisters Vineyards in Dahlonega. If attending, please RSVP to Clark MacAllister…
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Hello everyone, I know it is a busy time for you are, so I will make this quick. With grape root borer adult activity coming to a close here in Georgia, I wanted to get your input on this tricky pest. Below is a link to a short questionnaire about grape root borer management. If…
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We collected our first grape root borer adults today in one of our pheromone traps in Lumpkin County, Georgia. This means that the adults have started to emerge from the soil out of their pupal stage. For the next few weeks the adults will emerge, mate, and the females will lay their eggs at the…
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I just wanted to alert everyone that spotted wing drosophila (SWD) management timing is approaching soon. The SWD flies are active nearly year round in these parts, but near veraison as the brix levels in wine grapes reach approximately 15 degrees Brix, the grapes become attractive (and thus susceptible) to SWD. While infestation of wine…
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Paula Burke has alerted me that the Japanese beetles are starting to show up in West GA vineyards. They are only just beginning to emerge, so their numbers will increase dramatically over the next few weeks. In large enough numbers, Japanese beetles can be a severe pest of grapes during the summer, feeding mainly on…
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Please see these links for a list of management considerations for bunch grape and muscadine vineyards. These were developed by Mark Hoffmann and other NC State Extension Specialists. https://grapes.ces.ncsu.edu/2020/03/bunch-grape-vineyard-covid-19-chores-march-april/ https://grapes.ces.ncsu.edu/2020/03/muscadine-covid-19-chores-march-april-2020/