Let SDSU Extension know how alfalfa insects are affecting you

January 29, 2026
Posted in Forage
Plastic bag containing numerous green larvae.
Figure 1. Alfalfa weevil larvae sample collected via sweep net indicating the presence of a large population. (Credit: Patrick Wagner, SDSU Extension)

BROOKINGS, S.D. – South Dakota State University Extension is encouraging forage producers to participate in a survey about managing alfalfa insects.

SDSU Extension is collaborating with Anthony Hanson from the University of Minnesota Extension program to host the short, 22-question online survey.  To take the survey, visit https://z.umn.edu/alfalfapestsurvey.

Philip Rozeboom, SDSU Extension Integrated Pest Management Coordinator, and Adam Varenhorst, associate professor and SDSU Extension Field Crop Entomologist, said there have been reports of pesticides not being as effective against alfalfa weevil in recent years. They noted that alfalfa weevil populations were larger than usual in 2025.

The purpose of the survey is to gather alfalfa grower perspectives and needs for alfalfa weevil management and other related insects. The information gathered will help the Extension programs within the Midwest develop better educational programming and research.

For more information, contact Anthony Hanson, UM Extension Integrated Pest Management Educator; Philip Rozeboom, SDSU Extension Integrated Pest Management Coordinator, or Adam Varenhorst, associate professor and SDSU Extension Field Crop Entomologist.

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