Welcome to the Gevens lab!

My research program investigates the ecology of fungus and fungus-like plant pathogens for enhanced and integrated disease management to support commercial agriculture in Wisconsin. We have three main areas of focus: management of Phytophthora species pathogenic on potato and vegetable crops in field and storage, investigating species distribution and occurrence of pathogenic Alternaria affecting potato, and development of integrated disease management programming in potato systems to reduce reliance upon soil fumigation in managing key soilborne diseases. As the University of Wisconsin Extension Potato and Vegetable Pathologist, my program supports vegetable growers by providing research-based recommendations for controlling diseases during production and in storage. My research program directly feeds into my extension work.

Vegetable Crop Update Newsletter

  • Update 23 – Sep 18, 2022

    Save the date for the 2023 Wisconsin Agribusiness Classic (January 11th and 12th).  The Wisconsin Agribusiness Classic is Wisconsin’s premier agribusiness industry event drawing interest and participation from all confluences of the industry from throughout …

  • Update on late blight pathogen genotype from Michigan

    Hello, I forward, here, a message from Dr. Jaime Willbur, Potato and Sugar Beet Extension Pathologist with Michigan State Univ., regarding the late blight situation in Michigan.  The genotype or clonal lineage of the late …

  • Update 22 – Sep 11, 2022

    Amanda Gevens, Chair, Professor & Extension Vegetable Pathologist, UW-Madison, Dept. of Plant Pathology, 608-575-3029, Email: gevens@wisc.edu, Lab Website: https://vegpath.plantpath.wisc.edu/ Current P-Day (Early Blight) and Disease Severity Value (Late Blight) Accumulations. Thanks to Ben Bradford, UW-Madison …

  • Potato late blight confirmed in Michigan

    Jaime Willbur, Assistant Professor, Potato & Sugar Beet Pathology Program, Department of Plant, Soil, and Microbial Sciences, Michigan State University We have confirmed two reports of potato late blight in two separate field areas of …

  • Update 21 – September 5, 2022

    In This Issue: • Metabolic herbicide resistance • Potato disease risk and management recommendations for early blight and late blight • Cucurbit downy mildew • Tar spot on sweet corn

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Site Resources

Vegetable Crop Updates

Get the latest information about disease management in vegetable crop production in Wisconsin.

Vegetable Disease Resources

Learn more about common vegetable diseases, disease risk prediction tools, and other online and print resources.

Interactive Disease Severity Charts

We operate a network of four weather stations to give you the most relevant and accurate tools for late blight prevention in Wisconsin

Vegetable Disease Forecasting Network

This map tool helps you visualize disease and insect pressure across Wisconsin based on degree-day models and NOAA meteorological data.

Field Trials

Here you can find reports on our annual fungicide and disease management evaluations.