Vegetable Crop Update – Apr 19, 2026
In this issue: Potato Cull Pile Management | Potato Volunteer Risk in 2026 | Potato Late Blight Fungicides 2026
Vegetable Disease Control Laboratory of Amanda J. Gevens
In this issue: Potato Cull Pile Management | Potato Volunteer Risk in 2026 | Potato Late Blight Fungicides 2026
In This Issue: Potato and bean production updates. Potato and vegetable disease forecasting updates – thresholds met for late blight and early blight treatments. Cucurbit downy mildew. Bacterial blackleg and aerial limb rot of potato.
In This Issue: Seed potato age and research updates. Potato and vegetable disease forecasting updates. Early blight spore collections. Updates and management of potato leafhoppers, onion thrips, flea beetles, Colorado potato beetles (with detailed insecticide listing).
In this issue: Potato production updates. Colorado Potato Beetle, Potato Leafhopper, Seedcorn Maggot updates. 2024 Commercial Vegetable Production in Wisconsin Guide (A3422). Potato and veg disease forecasting in 2024 update. Phytophthora nicotianae blight vs late blight.
In This Issue: Potato crop production updates, Snap bean production updates, Potato and tomato early blight and late blight disease updates, Cucurbit downy mildew updates
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 …
In This Issue: Potato production updates, potato disease risk values and management, Cucurbit downy mildew, Cucurbit powdery mildew
In This Issue: Potato production research and commercial field updates. Caterpillar pests in cole crops, squash vine borer management. Potato and vegetable disease updates and disease management comments.
In this issue: Potato production and remote sensing research updates. Potato and vegetable disease forecasting. Colorado Potato Beetle, Seedcorn maggot across WI, and Brown marmorated stinkbug management.
In this issue: Seedcorn maggot peaks across Midwest, asparagus beetles, potato production updates, weather station and disease model updates for potato and vegetable crops.