How to Encourage Powdery Mildew Resistance in Grapevines
Powdery mildew sneaks into vineyards on warm, dry afternoons and colonizes leaves, shoots, and fruit within days. Once established, the fungus drains vine energy, distorts berries, and taints wine with earthy off-flavors that no amount of aging can mask. Growers who build resistance into their program stop the pathogen before it gains momentum. The following…