Vegetable Crop Update – Aug 30, 2026
In this issue: Wisconsin Weather & Potato Productivity | Potato Early and Late Blight Disease Risk Modelling and Management | Cucurbit Downy Mildew Updates
Vegetable Disease Control Laboratory of Amanda J. Gevens
In this issue: Wisconsin Weather & Potato Productivity | Potato Early and Late Blight Disease Risk Modelling and Management | Cucurbit Downy Mildew Updates
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: 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: 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 productivity and weather updates | Potato early and late blight disease risk model updates | Cucurbit downy mildew spores found in MI | Onion thrips updates and management | Colorado potato beetle updates and management
Hollow heart, depending on its severity, is also called brown center. Hollow heart is characterized by the formation of an irregular cavity in the flesh of the tuber, usually surrounded by dark brown tissues. Heat necrosis is also referred to as internal brown and internal necrosis, which is characterized by small, brown, necrotic lesions or spots inside the vascular ring of the tuber.
In This Issue: End of season crop production comments | Potato tuber heat necrosis and hollow heart | Late blight updates for potato/tomato | Cucurbit downy mildew updates | Pink eye of potato
In This Issue: Vegetable production updates | Disease forecasting updates for potato early blight and late blight | Cucurbit downy mildew updates | Angular leaf spot of cucurbits