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IPM Reports / Grape and Wine Institute / University of Missouri

IPM Reports

Special Reports

June 21, 2022Viticulture Leader Updates — MGGA Viticulture Field Day 2022

June 8, 2022Herbicide Drift: What To Do?

Survey ResultsA Survey of Viruses Found in Grapevine Cultivars Grown in Missouri

Frost ReportsMissouri 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.

2022

No. 7 — June 13, 2022

    Contents: Grape Scale Diaspidiotus Uvae: An Inconspicuous Grape Pest; High Temperatures and Phytotoxicity; Weather and Disease Outlook; Cumulative Growing Degree Days (Base 50) for the Seven Grape Growing Regions of Missouri from April 1 to June 13, 2022

No. 6 — May 30, 2022

    Contents: Pestalotiopsis and Neopestalotiopsis: Research Update from Missouri; Weather and Disease Outlook; Grapevine Grafting (Topworking) Workshop at Highland Community College Viticulture and Enology; Cumulative Growing Degree Days (Base 50) for the Seven Grape Growing Regions of Missouri from April 1 to May 30, 2022

No. 5 — May 23, 2022

    Contents: Crucial Period of Disease Management; With Bloom Approaching, Remember Petiole Sampling; Weather and Disease Outlook; Grapevine Grafting (Topworking) Workshop at Highland Community College Viticulture and Enology; Cumulative Growing Degree Days (Base 50) for the Seven Grape Growing Regions of Missouri from April 1 to May 23, 2022

No. 4 — May 16, 2022

    Contents: Grape Berry Moth; How to Get Data from Missouri Mesonet—Weather Station Network; Selected Questions from Grape Growers; Weather and Disease Outlook; Grapevine Grafting (Topworking) Workshop at Highland Community College Viticulture and Enology; Cumulative Growing Degree Days (Base 50) for the Seven Grape Growing Regions of Missouri from April 1 to May 15, 2022

No. 3 — April 25, 2022

    Contents: The Growing Season Jump Started; Focus on the Forecast; Focus on Phomopsis, Black Rot, Downy Mildew... and Anthracnose; Be Protected Prior to an Extended Wet Period; Thoughts on Early Protective Fungicide Applications; Grapevine Grafting (Topworking) Workshop at Highland Community College Viticulture and Enology; Cumulative Growing Degree Days (Base 50) for the Seven Grape Growing Regions of Missouri from April 1 to April 24, 2022

No. 2 — April 11, 2022

    Contents: First Spray: Focus on Phomopsis Viticola; Internships and Jobs Available in the Grape and Wine Industry; Mealybugs in Mid-Missouri Vineyards; Grapevine Grafting (Topworking) Workshop at Highland Community College Viticulture and Enologys; Cumulative Growing Degree Days (Base 50) for the Seven Grape Growing Regions of Missouri from April 1 to April 11, 2022

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; Notable News; Cumulative Growing Degree Days (Base 50) for the Seven Grape Growing Regions of Missouri from April 1 to April 4, 2022

2021

No. 7 — July 12, 2021

    Contents: 2021 Crop Outlook; Grape Exchange; Cumulative Growing Degree Days (Base 50) for the Seven Grape Growing Regions of Missouri from April 1 to July 12, 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; Cumulative Growing Degree Days (Base 50) for the Seven Grape Growing Regions of Missouri from April 1 to April 23, 2021

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); Vineyard Nutrition Survey; Herbicide Drift Survey Link Survey Closes April 11, 2021

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; Vineyard Nutrition Survey; Herbicide Drift Survey Link Survey Closes April 11, 2021

No. 3 — March 1, 2021

    Contents: Herbicide Drift Survey

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

Past 2020 issues

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; Cumulative Growing Degree Days (Base 50) for the Seven Grape Growing Regions of Missouri from April 1 to Sept. 5, 2020; Weather Outlook

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

Grape Exchange Announcement

Announcement for Missouri Grape Growers Association Field Day with Richard Smart

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

    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

    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

    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

    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

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