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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 – Jul 5, 2026

    Vegetable Crop Update – Jul 5, 2026

    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…

  • Vegetable Crop Update – Jun 28, 2026

    Vegetable Crop Update – Jun 28, 2026

    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,…

  • Vegetable Crop Update – Jun 21, 2026

    Vegetable Crop Update – Jun 21, 2026

    In this issue: Potato early and late blight disease risk model updates | Onion disease updates | Armyworm, Cutworm, and Colorado Potato Beetle updates and management

  • Vegetable Crop Update – Jun 14, 2026

    Vegetable Crop Update – Jun 14, 2026

    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…

  • Vegetable Crop Update – Jun 7, 2026

    Vegetable Crop Update – Jun 7, 2026

    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…

  • Rhizoctonia root rot and stem canker management in tomato production

    Rhizoctonia root rot and stem canker management in tomato production

    Rhizoctonia root rot and stem canker caused by the soilborne fungus Rhizoctonia solani can be a significant challenge in Wisconsin tomato production, especially under cool soils, excessive moisture, compacted soils, or where…

  • Vegetable Crop Update – May 31, 2026

    Vegetable Crop Update – May 31, 2026

    In this issue: Potato early and late blight disease modeling and risk updates | Rhizoctonia in vegetables – updates and recommendations for management in tomato | Seedcorn maggot updates and management |…

  • Vegetable Crop Update – May 25, 2026

    Vegetable Crop Update – May 25, 2026

    In this issue: Vegetable Insect Update – Russell L. Groves, Professor and Associate Department Chairperson, UW-Madison, Department of Entomology, 608-262-3229 (office), (608) 698-2434 (cell), e-mail: rgroves@wisc.edu, Vegetable Entomology Webpage: https://vegento.russell.wisc.edu/ Imported cabbageworm…

  • Vegetable Crop Update – May 17, 2026

    Vegetable Crop Update – May 17, 2026

    In this issue: Cabbage Maggot Updates and Management | Colorado Potato Beetle Updates and Management | Vegetable Leafminers Updates and Management | Potato Disease Model Updates (Late blight and Early blight)

  • Black Dot & Silver Scurf Management in Potato

    Black Dot & Silver Scurf Management in Potato

    Wisconsin potato growers have increasingly reported concerns with black dot and silver scurf over the past several years. These diseases are often subtle during crop development yet can significantly impact tuber appearance,…

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