In This Issue: Updates on information resources | A3422 Commercial Vegetable Production in Wisconsin 2026 | WPVGA/UWEX Grower Education Conference Online Proceedings | UWEX Central WI Processing Crops Meeting, UW-Hancock ARS on Mar 18, 2026 | Rhizomania – a new beet disease for WI
Newsletter
Important update on Blocker fungicide in potato
In mid-December 2025, AMVAC Chemical Corporation, the manufacturers of the fungicide Blocker (pentachloronitrobenzene, PCNB), decided to stop producing Blocker 4F and 10G. In effect, this concludes production of Blocker for the future. The Blocker that is on the shelves at this time is all that will be available for future use. It is estimated that this will leave potato growers with a supply that may satisfy only 25-33% of the potato use demand in 2026.
Vegetable Crop Update – Sep 28, 2025
In This Issue: Late blight updates for potato/tomato | Cucurbit downy mildew updates
Vegetable Crop Update – Sep 21, 2025
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
Vegetable Crop Update – Sep 14, 2025
In This Issue: Disease forecasting updates for potato early blight and late blight | Cucurbit downy mildew updates | Post-harvest diseases of potato and their management
Vegetable Crop Update – Sep 7, 2025
In This Issue: Disease forecasting updates for potato early blight and late blight | Cucurbit downy mildew updates | Black dot and silver scurf of potato
Vegetable Crop Update – Aug 31, 2025
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
Vegetable Crop Update – Aug 24, 2025
In This Issue: Disease forecasting updates for potato early blight and late blight | Cucurbit downy mildew updates | Phytophthora crown and fruit rot in cucurbits and solanaceous crops | Corn earworm and its management | PVY and its management
Vegetable Crop Update – Aug 17, 2025
In This Issue: Disease forecasting updates for potato early blight and late blight | Cucurbit downy mildew updates | Tomato Septoria disease and management
Vegetable Crop Update – Aug 10, 2025
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