Fungal pathogens, like the ones present in many specialty crops, often change over time. This means, for example, that resistance to certain fungicides might also vary from year to year. Improved knowledge about which types of pathogens are present will allow growers to invest in the most cost-effective disease management strategies. Timothy Miles, assistant professor and Extension specialist in the …
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, South Carolina, Tennessee, and Virginia) …
University of Georgia Viticulture Extension — 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 …
Got vine mealybug in the vineyard? Consider mating disruption in your IPM program. Watch this brief interview with Kent Daane from the UC Cooperative Extension as he shares how it works and how effective their research trials have been throughout the state in utilizing this technology. Read more about vineyard pest management in American Vineyard Magazine.
Grapevine Red Blotch Disease (GRBD) has been on the radar of the national wine grape industry for eight years. It is caused by a novel virus in the Geminiviridae family and the first virus of this family known to infect grapevines. Since the virus was identified in 2008 and first described as a potential threat to the industry in 2012, …
Contents of the July Issue: Lost Draw Vineyards Lone Star Viticulture on Upward Course Spotted Lanternfly Threatens Grape Industry Industry Begins Organizing Defenses Against Vine-Killing Pest Post-bloom Vineyard Care Viticulture Experts Address Wisconsin & Minnesota Growers Ag Employers, Workers Approach Smoke Concerns UC Davis Examines Health & Safety Awareness
The Pierce’s Disease & Glassy-Winged Sharpshooter (PD/GWSS) Referendum, conducted this spring, passed with 78 percent approval of California winegrape growers. All winegrape producer entities that paid the assessment on grapes crushed in 2019 received ballots and 49 percent cast ballots. Assessment funds are used for research, outreach, and related activities on PD, GWSS, and other designated pests and diseases of …
Frost injury this spring has created a situation where grapes have a few primary shoots, some secondary shoots, and many non-count basal and latent shoots. This puts shoots at various stages of development and creates problems for growers. Regardless, some varieties are are at or nearing bloom on surviving primary shoots, which is a key time to control important diseases …
Today, June 5, 2020 Japanese beetles were reported in Central Northeast Missouri, specifically Boone County. The Japanese beetles were reported on the University of Missouri Integrated Pest Management website. The trapping network has eleven sites around Missouri trapping for Japanese beetles. The Japanese beetles were caught in a pheromone trap. On the IPM website you can sign up to receive …
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. When rain is occurring frequently, …
Diedre: I have old Zinfindel grapes 90 plus listed in historic old send family owned ori...