
E290 - 290: Fighting Powdery Mildew with UVC Light
Published: November 20, 2025
Duration: 27:51
With fungicide resistance on the rise, grape growers are looking for new ways to manage powdery mildew. Lexi McDaniel, Viticulture Extension Specialist at North Carolina State University, explores the science behind using UVC light to combat this grapevine disease by directly disrupting the DNA bonds needed for replication. She shares insights from her trials, including why the light must be applied at night, how often it needs to pass through the vineyard, and how this technique compares to traditional fungicide programs in both cost and effectiveness.
Resources:
117: Grapevine Mildew Control with UV Light 197: Managing the Sour...