Reports
Special reports
June 21, 2023 — Cold-Temperature Damage to the 2023 Missouri Wine Grape Crop
June 21, 2022 — Viticulture Leader Updates — MGGA Viticulture Field Day 2022
June 8, 2022 — Herbicide Drift: What To Do?
Survey Results — A Survey of Viruses Found in Grapevine Cultivars Grown in Missouri
Frost Reports — Missouri Report on Damage to Grapevines from Frost/Freeze Events During April through May 11, 2020
Vinews: Viticulture Information News
Please scout your vineyards on a regularly scheduled basis in an effort to manage problem pests. This report contains information on scouting reports from specific locations and may not reflect pest problems in your vineyard. If you would like more information on IPM in grapes, contact Dean Volenberg at 573-882-0476 or volenbergd@missouri.edu.
2023
No. 06 — July 17, 2023
- Contents: Signs of Stress from Drought; Wetting Period of Morning Dews and Downy Mildew; Sour Rot Management — Start Thinking Ahead; High Air Temperatures and Pesticide Phytotoxicity; Report Herbicide Drift Damage to Grape Crop to Missouri Department of Agriculture; Cumulative Growing Degree Days for the Seven Grape Growing Regions of Missouri from April 1 to July 17, 2023
No. 05 — July 3, 2023
- Contents: Split and Cracked Berries; Grape Scale and Grape Mealybug; Report Herbicide Drift Damage to Grape Crop to Missouri Department of Agriculture; Cumulative Growing Degree Days for the Seven Grape Growing Regions of Missouri from April 1 to July 3, 2023
No. 04 —June 19, 2023
- Contents: Drought Stress and Grapevines and Wine Quality; Esca, Apoplexy, and Drought; Report Herbicide Drift Damage to Grape Crop to Missouri Department of Agriculture; Cumulative Growing Degree Days for the Seven Grape Growing Regions of Missouri from April 1 to June 19, 2023
No. 03 —June 12, 2023
- Contents: Misunderstanding Weather Events and Grape Disease Threats; Japanese Beetles Reported Rrom Around the State This Week; Drought and Grapevine Trunk Disease; Future Grape Cultivars for the Missouri Grape and Wine Industry; Report Herbicide Drift Damage to Grape Crop to Missouri Department of Agriculture; Cumulative Growing Degree Days for the Seven Grape Growing Regions of Missouri from April 1 to June 12, 2023
No. 02 —May 29, 2023
- Contents: The 2023 Grape Vintage and Weather Impacts; Asynchronous Flowering and Fruit Development; Midwest Fruit Pest Management Guide 2023-24; Vineyard Irrigation; Other Grapevine Stresses on the Horizon: Synthetic Auxin Herbicide Drift; Spotted Lanternfly (SLF) Update; Cumulative Growing Degree Days for the Seven Grape Growing Regions of Missouri from April 1 to May 26, 2023
No. 01 — Jan. 23, 2023
- Contents: Show Me Grape and Wine Conference and Symposium; Assess Bud Survival Prior to Pruning
Archive highlights:
2022
No. 10 — Sept. 12, 2022
- Contents: Be on the Lookout for Spotted Lanternfly (SLF)
No. 9 — Aug. 8, 2022
- Contents: Disease Threats as Harvest Approaches
No. 8 — July 18, 2022
- Contents: Sour Rot Management; High Temperatures and Phytotoxicity
No. 7 — June 13, 2022
- Contents: Grape Scale Diaspidiotus Uvae: An Inconspicuous Grape Pest; High Temperatures and Phytotoxicity
No. 6 — May 30, 2022
- Contents: Pestalotiopsis and Neopestalotiopsis: Research Update from Missouri
No. 5 — May 23, 2022
- Contents: Crucial Period of Disease Management; With Bloom Approaching, Remember Petiole Sampling
No. 4 — May 16, 2022
- Contents: Grape Berry Moth; How to Get Data from Missouri Mesonet—Weather Station Network; Selected Questions from Grape Growers
No. 3 — April 25, 2022
- Contents: Focus on Phomopsis, Black Rot, Downy Mildew... and Anthracnose; Be Protected Prior to an Extended Wet Period; Thoughts on Early Protective Fungicide Applications
No. 2 — April 11, 2022
- Contents: First Spray: Focus on Phomopsis Viticola; Mealybugs in Mid-Missouri Vineyards
No. 1 — April 4, 2022
- Contents: When Will Bud Break Occur?; Pesticides Update; Dormant and Delayed Dormant Sprays — Sulforix; Early Cover Sprays — The First Cover Spray; Spotted Lanternfly Updates
2021
No. 6 — April 26, 2021
- Contents: Frost/Freeze Events on April 21 and 22 Result in Damage to Some Grape Cultivars that Had Surpassed Bud Break
No. 5 — March 22, 2021
- Contents: Cross-resistance to Insecticides Develops in Fruit Flies Drosophila spp. in a Missouri Vineyard; Grape Leaf Rust (Phakopsora euvitis)
No. 4 — March 15, 2021
- Contents: Keep Alert For Potential Grape Pests When Pruning; Grape Cane Borer Amphicerus Bicaudatus; Grape Scale Diaspidiotus Uvae; Grape Mealybug Pseudococcus Maritimus
No. 2 — Feb. 22, 2021
- Contents: Primary Bud Mortality of Selected Cultivars
No. 1 — Feb. 15, 2021
- Contents: Determining Cold-Injury to Grape Buds; Items You Will Need to Determine Bud Injury
2020
No. 14 — Sept. 7, 2020
- Contents: Time To Think About The 2021 Grape Growing Season; Know the Difference Between Potassium Bicarbonate and Phosphorous Acid Fungicides
No. 13 — Aug. 31, 2020
- Contents: Norton and Disease: Resistance, Tolerance and Susceptibility; Pesticide News Updates; Update on Mealybugs from Missouri Vineyards; Cumulative Growing Degree Days (Base 50) for the Seven Grape Growing Regions of Missouri from April 1 to Aug. 29, 2020; Weather Outlook
No. 12 — Aug. 24, 2020
- Contents: Apoplexy; Grape Exchange and Equipement Exchange; Cumulative Growing Degree Days (Base 50) for the Seven Grape Growing Regions of Missouri from April 1 to Aug. 22, 2020; Weather Outlook
No. 11 — Aug. 10, 2020
- Contents: Crown Gall; Grape Exchange and Equipement Exchange; ISU/UMN Joint Research and Winemaking Webinar Series; Cumulative Growing Degree Days for the Seven Grape Growing Regions of Missouri from April 1 to Aug. 8, 2020; Weather Outlook
No. 10 — July 13, 2020
- Contents: Bitter Rot and Sour Rot; Grape Exchange and Equipement Exchange; ISU/UMN Joint Research and Winemaking Webinar Series; Survey for April 2020 Frost Freeze Vineyard Damage; Dicamba Cancellation Order: What Does it Mean for Grape Growers?; Cumulative Growing Degree Days for the Seven Grape Growing Regions of Missouri from April 1 to July 11, 2020; Weather Outlook
No. 9 — July 6, 2020
- Contents: Berry Cracking; Birds Eye Rot Caused by Anthracnose Elsinoe Ampelina; ISU/UMN Joint Research and Winemaking Webinar Series; Japanese Beetles Update; Cumulative Growing Degree Days for the Seven Grape Growing Regions of Missouri from April 1 to July 4, 2020; Weather Outlook
No. 8 — June 22, 2020
- Contents: As Temperatures Rise and the Pest Complex Increases, Be Aware of Tank Mixes; Some Grape Virus Combinations Appear to Be More Detrimental to Grapevines; Japanese Beetles Update; Cumulative Growing Degree Days for the Seven Grape Growing Regions of Missouri from April 1 to June 20, 2020; Weather Outlook
No. 7 — June 15, 2020
- Contents: Who Are the Vectors of Grapevine Leafroll Disease?; Japanese Beetles Update; Cumulative Growing Degree Days for the Seven Grape Growing Regions of Missouri from April 1 to June 13, 2020; Weather Outlook
No. 6 — June 1, 2020
- Contents: Critical Period of Disease Management; First Report of Japanese Beetles for the 2020 Season; Cumulative Growing Degree Days for the Seven Grape Growing Regions of Missouri from April 1 to May 30, 2020; Weather Outlook
No. 5 — May 25, 2020
- Contents: Update on the Frost Freeze Impact; Managing Vineyards That Have Frost Freeze Damage; Cumulative Growing Degree Days for the Seven Grape Growing Regions of Missouri from April 1 to May 23, 2020; Weather Outlook
No. 4 — May 18, 2020
- Contents: Phomopsis Viticola; Anthracnose Elsinoe ampelina; Cumulative Growing Degree Days for the Seven Grape Growing Regions of Missouri from April 1 to May 16, 2020; Weather Outlook
No. 3 — May 11, 2020
- Contents: Nitrogen and Grapevines; Be Prepared for Petiole Sampling; Cumulative Growing Degree Days for the Seven Grape Growing Regions of Missouri from April 1 to May 9, 2020; Weather Outlook
No. 2 — May 4, 2020
- Contents: Loss of Some Primary Buds to Frost/Freeze Will Result in Asynchronous Bloom; Cool Wet Conditions Prevail in Forecasts; Start Planning Immediate Pre-bloom Through Bloom Protective Fungicide Programs; Commonly Grown Grape Cultivars in Missouri That Are Moderately or Highly Susceptible to Powdery Mildew Erysiphe; Grape Berry Moth; Cumulative Growing Degree Days (Base 50) for the Seven Grape Growing Regions of Missouri from April 1 to May 1, 2020
No. 1 — April 27, 2020
- Contents: Phomopsis Cane and Leaf Spot; Frost Freeze Events Result in Damage to Some Missouri Vineyards; Be Aware of Herbicide Drift; Tips to Minimize Soil Compaction During Spring Spraying Events; Cumulative Growing Degree Days for the Seven Grape Growing Regions of Missouri from April 1 to April 24, 2020
Past 2019 issues
No. 18 — Sept. 9, 2019
- Contents: Alternative Weed Control Products; Grape Exchange; Survey of Viruses Found in Grapevine Cultivars in Missouri; Cumulative Growing Degree Days for the Seven Grape Growing Regions of Missouri from April 1 to Sept. 9, 2019
No. 17 — Aug. 19, 2019
- Contents: What Have We Learned from Richard Smart's Visit to Missouri in Late June 2019; Grape Exchange; Survey of Viruses Found in Grapevine Cultivars in Missouri; Cumulative Growing Degree Days for the Seven Grape Growing Regions of Missouri from April 1 to Aug. 20, 2019
No. 16 — July 24, 2019
- Contents: Deciphering Downy Mildew; Cumulative Growing Degree Days for the Seven Grape Growing Regions of Missouri from April 1 to July 22, 2019
No. 15 — July 15, 2019
- Contents: Downy Mildew; Cumulative Growing Degree Days for the Seven Grape Growing Regions of Missouri from April 1 to July 15, 2019
No. 14 — July 1, 2019
- Contents: Grapevine Trunk Diseases: What Richard Smart Found in Missouri; Phytotoxicity: Be Careful With the Spray Cocktails;
Rupestris Speckles Masquerades Ability to Diagnose Early Downy Mildew Symptoms; IA 20x Hand Lens Can Save You a Lot of Misfortune; Grape Exchange;
Cumulative Growing Degree Days for the Seven Grape Growing Regions of Missouri from April 1 to June 24, 2019, and from April 1 to July 1, 2019
No. 13 — June 17, 2019
- Contents: Japanese Beetles Have Emerged; Rupestris Speckle; Cumulative Growing Degree Days for the Seven Grape Growing
Regions of Missouri from April 1 to June 17, 2019
No. 12 — June 10, 2019
- Contents: Norton and Mancozeb Phytotoxicity; Cumulative Growing Degree Days for the Seven Grape Growing Regions of Missouri from April 1 to June 10, 2019
No. 11 — June 3, 2019
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Contents: Post Bloom Disease Management; What Does All the Rain and Flooding Mean for the Grape Crop?; Norton and Mancozeb Phytotoxicity;
Cumulative Growing Degree Days for the Seven Grape Growing Regions of Missouri from April 1 to June 3, 2019
No. 10 — May 27, 2019
-
Contents: Light Green Grapevine Leaves and Saturated Vineyard Soils; Anthracnose; Cumulative Growing Degree Days for the Seven
Grape Growing Regions of Missouri from April 1 to May 27, 2019
No. 9 — May 20, 2019
-
Contents: Immediate Pre-Bloom: Critical Period of Disease Management; With Bloom Approaching, Remember Petiole Sampling; Cumulative
Growing Degree Days for the Seven Grape Growing Regions of Missouri from April 1 to May 20, 2019
No. 8 — May 13, 2019
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Contents: Alert for Herbicide Drift; Prepare for Their Return: Japanese Beetles; Weather Forecast — Heavy Rains Predicted;
Pestalotiopsis; Phomopsis viticola on Chambourcin on 17 May 2019, Boone; Cumulative Growing Degree Days for the Seven Grape Growing Regions
of Missouri from April 1 to May 13, 2019
No. 7 — May 6, 2019
-
Contents: Scale Insects; Cumulative Growing Degree Days for the Seven Grape Growing Regions of Missouri from April 1 to May 6, 2019
No. 6 — April 29, 2019
-
Contents: Rainfall and Fungicide Efficacy; Keep an Eye on the Weeds; Focus on Phomopsis, Black Rot and Downy Mildew; Tips to Minimize
Soil Compaction During Spring Spraying Events; Cumulative Growing Degree Days for the Seven Grape Growing Regions of Missouri from April 1 to April 29,
2019
No. 5 — April 22, 2019
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Contents: Managing Drosphila spp. and Insecticide Stewardship; Phenology from Friday, April 19 in the Hermann Area;
Cumulative Growing Degree Days for the Seven Grape Growing Regions of Missouri from April 1 to April 22, 2019
No. 4 — April 15, 2019
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Contents: Cross-resistance of Fruit Flies Drosophila spp. in New York; How Much to Apply?; Bud Break — Looking Back;
Potential for Frost Damage in April — Unlikely; Phomopsis Cane and Leaf Spot
No. 3 — April 1, 2019
-
Contents: Bud Mortality — Final Report; Food Safety Modernization Act (FSMA) Update
No. 2 — March 25, 2019
-
Contents: Bud Mortality Update
No. 1 — March 18, 2019
- Contents: Bud Mortality