Sustainable Winegrowing With Vineyard Team

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 Rot Disease Complex in Grapes 219: Intelligent Sprayers to Improve Fungicide Applications and Save Money 235: Battling Fungicide Resistance with Glove Sampling 266: Soft Pesticide Trial: Powdery Mildew, Downy Mildew, Botrytis, and Sour Rot Field-Scale Ultraviolet-C Light Applications to Manage Grapevine Powdery Mildew Grapevine Powery Mildew UV-C Information Introducing UVC