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Get the latest information about disease management in vegetable crop production in Wisconsin. To be added to the email listserv and receive this newsletter in your inbox, please contact Amanda Gevens. A printable PDF version is available as a link at the end of each article.

  • Vegetable Crop Update – Apr 22, 2025

    Vegetable Crop Update – Apr 22, 2025

    In this issue: Chlorothalonil registration updates | Links to the Commercial Vegetable Production in Wisconsin A3422 Guide, the WI Potato and Vegetable Growers Association & UWEX Grower Education Conference Proceedings, Wisconet, and…

  • Update 17 – Sep 9, 2024

    Update 17 – Sep 9, 2024

    In This Issue: Potato late blight and early blight updates. Cucurbit downy mildew updates.

  • Update 16 – Sep 1, 2024

    Update 16 – Sep 1, 2024

    In This Issue: Potato production updates. Potato late blight and early blight updates. Cucurbit downy mildew updates.

  • Cucumber Downy Mildew Confirmed in Adams Co. WI

    Cucumber Downy Mildew Confirmed in Adams Co. WI

    Downy mildew on cucumber foliage was confirmed today from a commercial pickling cucumber field in Adams County. This is the first confirmed diagnosis of this disease in Wisconsin in 2024.

  • Late Blight Confirmed on Tomato in Dane Co. WI

    Late Blight Confirmed on Tomato in Dane Co. WI

    Tomato late blight was confirmed today on foliar and fruit tissues from a plant sample submitted from the western edge of Dane County.

  • Update 15 – August 15, 2024

    Update 15 – August 15, 2024

    In This Issue: More Aphids! Identifying and managing vegetable aphids. Potato late blight and early blight updates. Cucurbit downy mildew updates and disease look-alikes in WI.

  • Update 14 – Aug 18, 2024

    Update 14 – Aug 18, 2024

    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…

  • Update 13 – Aug 11, 2024

    Update 13 – Aug 11, 2024

    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.

  • Update 12 – Aug 4, 2024

    Update 12 – Aug 4, 2024

    In this issue: Potato production updates: stress from heat and high rainfall showing late-season effects. Potato colonizing aphids, Squash bugs in cucurbits, Western bean cutworm updates and management. Potato and vegetable disease…

  • Update 11 – Jul 28, 2024

    Update 11 – Jul 28, 2024

    In this issue: Corn earworm, Western bean cutworm, Two-spotted spider mites, and European corn borer updates and management. Potato and vegetable disease forecasting updates – thresholds met for late blight and early…

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