Walt Mahaffee, Ph.D., Research Plant Pathologist, USDA-Agricultural Research Service, Corvalis explains how and why Grape Powdery Mildew populations become resistant to certain fungicides. He also explores how to mitigate resistance and describes current research on how fungicide resistance starts in Grape Powdery Mildew and how it spreads from one place to another.

References:

Mahaffee’s USDA Agricultural Research Service webpage
Fungicide Resistance Action Committee website
Fungicide Resistance in Grapes: Grower Perspective Episode 6 | Vineyard Team Board Members (Sustainable Winegrowing)
Fungicide Resistant Mildew Episode 09 | Dr. Tim Miles (Sustainable Winegrowing)
The Goldilocks Principle & Powdery Mildew Management Episode 2 | Dr. Michelle Moyer (Sustainable Winegrowing)
Grape Powdery Mildew Management and Inoculum Monitoring Episode 5 | Walt Mahaffee (Sustainable Winegrowing)
Slides for “Grape Powdery Mildew Management and Inoculum Monitoring”
Gubler-Thomas Model
PMapp: A Mobile App for Assessing Grape Powdery Mildew
Sign Up | Irrigation Efficiency Project
Sustainable Ag Expo
Sustainable Ag Expo Attendee Registration Discount
UC Pest Management Guidelines for Grape Powdery Mildew
What the mildew? A perspective on another challenging year managing powdery mildew | Article by Dr. Mahaffee

Get More

Subscribe on Google Play, iTunes, Stitcher, TuneIn or wherever you listen so you never miss an episode on the latest science and research with the Sustainable Winegrowing Podcast. Since 1994, Vineyard Team has been your resource for workshops and field demonstrations, research, and events dedicated to the stewardship of our natural resources.

Learn more at www.vineyardteam.org.

47: Fungicide Resistance in the Vineyard

Sustainable Winegrowing