Vegetable Disease Control Laboratory of Amanda J. Gevens
Please note an important disease update. Potato late blight (clonal lineage/genotype US-23) was discovered in a south-western Michigan County (St. Joseph) on August 12, 2026. Initial characterization of the pathogen was completed by Rob Schafer and his lab at Mid-Michigan Agronomy in DeWitt Michigan. Samples were also sent to Dr. Phillip Wharton at the University …
In this issue: Potato Early and Late Blight Disease Risk Modelling and Management |
Cucurbit Downy Mildew Updates | Weather and Potato Production Updates | Aphid Pests of Vegetable Crops | UW Extension Potato Groundwater Quality Field Day Update
In this issue: Potato Early and Late Blight Disease Risk Model Updates | Cucurbit Downy Mildew Updates | Hail Damage and Disease Management | European Corn Borer Updates and Management | Corn Earworm Updates and Management
In this issue: Dry Weather and Irrigation Considerations for Vegetables | Potato Early and Late Blight Disease Risk Model Updates | Blackleg, Aerial Stem Blight, Tuber Soft Rot of Potato Management | Cucurbit Downy Mildew Update | Potato and Sugar Beet Diseases
In this issue: Potato Early and Late Blight Disease Risk Model Updates | Tomato Septoria Update and Management | Western Bean Cutworm Updates and Management | Squash Bug Updates and Management | Potato Leafhopper Updates and Management
In this issue: Weather Impacts on Potato & Vegetable Crops | Potato Early and Late Blight Disease Risk Model Updates | Cucurbit Downy Mildew Updates and Management Strategies | Potato Virus Y Management | Corn Earworm Management | Langlade Co. Airport Research Station Field Day Flier
In this issue: EPA Public Comment Period for ESA Fungicide Strategy – extended to Jul 20 | Potato Early and Late Blight Disease Risk Model Updates | White Mold of Potato and Management Strategies | Colorado Potato Beetle (2nd gen updates) | Potato Virus Y Management | UW Hancock ARS Field Day Agenda
In this issue: Weather and Potato Production Updates | Potato Early and Late Blight Disease Risk Model Updates | Early Blight Fungicides | Corn Tar Spot Updates | Corn Earworm, Diamondback Moth, Japanese Beetle, Cucumber Beetle and Colorado Potato Beetle updates and management
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: Potato early and late blight disease risk model updates | Cabbage black rot – be on the watch | Wisconet: we are ahead on growing degree days in WI | Squash vine borer updates and management | Colorado potato beetle updates and management