Laboratory Assays of a Seed Treated Soyabeans With and Without Nematicide, Agrimek (abamectin), and a Molluscicide Baits for Management of Slugs

Project Abstract

Slugs (Deroceras spp.) are becoming significant pests in conservation tillage soybean systems, where their feeding on emerging seedlings can severely reduce plant stands and yields. This study evaluated the efficacy of seed-applied nematicides Avicta complete 500 (with and without Agrimek), foliar applied abamectin spray, and Deadline M-PS (metaldehyde-based baits) against the marsh slugs (Deroceras laeve) and gray field slugs (D. reticulatum) under laboratory conditions. Soybean seedlings germinated on moist paper towels were exposed to slugs across various treatment groups. Seedling damage and slug mortality were monitored over 14 days. Deadline M-PS and abamectin spray significantly reduced slug-induced damage and mortality, especially among adults in the marsh slug trial. In the gray field slug trial, abamectin spray consistently outperformed seed treatment, reducing both seedling injury and mortality compared to untreated controls. Avicta-treated seeds had moderate efficacy in both species, with limited impact on juvenile slugs. This study emphasizes the importance of life-stage-specific responses in evaluating control strategies and supports the integration of chemical treatments, particularly baits and abamectin spray with other cultural practices for more effective slug management in soybean production.

Conference

Ohio Valley Entomology Association 2025

Meeting Dates: October 10, 2025

Sponsoring Body: UKY Conference

https://www.eventbrite.com/e/ohio-valley-entomological-association-2025-meeting-tickets-1458685921859?aff=oddtdtcreator

Funding Type

Travel Grant

Academic College

Hutson School of Agriculture

Area/Major/Minor

Sustainable Agriculture

Degree

Masters

Classification

Senior

Name

Dr. Kristie Guffey

Academic College

Hutson School of Agriculture

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