Bean Binoculars Incident

Slug Damage

Issue: Insects, Mites, and Slugs

Scouted in Columbia County, WI on June 25th, 2024

Slug Damage

Details:

Slug damage was observed in emerging soybeans. Cotyledon damage is present and many stems are cut. Around 50-75% of the site was showing damage and slugs were observed to be present. These soybeans were no-till planted into a cereal rye cover crop that was crimped after planting. 

Conclusion:

Growers should assess stands and decide to replant if stands are below 80,000 plants per acre, but only if it is before June 20 in Wisconsin. You can find more information in this article by UW Extension or this article by the Soybean Research and Information Network. You find more pictures at this site from Penn State. 

Contributor:

John Gaska
University of Wisconsin–Madison

Resources:

Slugs | UW Extension
Slugs | Soybean Research & Information Network

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Photo of a hand with cereal rye residue in the background. On the hand is a damaged soybean seedling and two slugs. Photo of emerging soybeans in heavy rye cover crop residue. Photo of soybean seedlings emerging in heavy cover crop residue with slug damage.