Vegetable Crop Update – Jun 21, 2026
In this issue: Potato early and late blight disease risk model updates | Onion disease updates | Armyworm, Cutworm, and Colorado Potato Beetle updates and management
Vegetable Disease Control Laboratory of Amanda J. Gevens
In this issue: Potato early and late blight disease risk model updates | Onion disease updates | Armyworm, Cutworm, and Colorado Potato Beetle updates and management
In This Issue: Onion thrips updates and management | Western bean cutworm updates and management | Disease forecasting updates for potato early blight and late blight | Cucurbit downy mildew, cucurbit powdery mildew updates and management | Onion Stemphylium updates and management
In This Issue: Potato and vegetable disease forecasting updates – thresholds met for late blight and early blight treatments. Cucurbit downy mildew. Onion Stemphylium Leaf Blight.
Amanda Gevens, Chair, Professor & Extension Vegetable Pathologist, UW–Madison, Dept. of Plant Pathology, 608-575-3029, Email: gevens@wisc.edu, Lab Website: https://vegpath.plantpath.wisc.edu/ Current P-Day (Early Blight) and Disease Severity Value (Late Blight) Accumulations. Thanks to Ben Bradford, UW–Madison Entomology; Stephen Jordan, UW–Madison Plant Pathology; and our grower collaborator weather station hosts for supporting this disease management effort in …