2024
Developing a Resilient Soybean IPM Program for Stink Bugs
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Contributor/Checkoff:
United Soybean Board
Category:
Sustainable Production
Keywords:
Biotic stressGeneticsPest
Parent Project:
This is the first year of this project.
Lead Principal Investigator:
Jeff Davis, Louisiana State University
Co-Principal Investigators:
Project Code:
24-209-S-B-2-B
Contributing Organization (Checkoff):
United Soybean Board
$97,780
Institution Funded:
LSU AgCenter
$97,780
Brief Project Summary:
Soybean farmers lack resistant varieties for stink bugs that yearly reduce yield and quality. The purpose of this project is to identify and develop sources of resistance for the stink bug complex, understand the specific resistance mechanisms, and identify new chemistries to build a resilient IPM program.
Information And Results
Project Summary

Project Objectives

Project Deliverables

Progress Of Work

Final Project Results

Over the first year of this project (2023 to 2024) we evaluated fifty-nine soybean lines for stink bug resistance. New crosses were made for rough mapping of resistance and were also be screened. Resistance evaluation was based on population estimates in the field (via sweep net and egg mass counts), yield, and seed damage (Damage Index). We collaborated with colleagues in the University of Florida to identify and synthesize new chemistries for insecticides specifically for stink bugs. We screened, both in the field and the laboratory, these three new insecticides: (1) a plant essential oil and (2) two voltage gated potassium channel inhibitors. We assessed contact activity using adult vial tests (AVT) and evaluated persistent insecticide activity (contact and feeding) using a green bean dip assay. Additionally, we tested these products for efficacy against caterpillars and aphids.

Benefit To Soybean Farmers

Overall, we advanced our knowledge and created potential new tools (host plant resistance in high yielding varieties and new insecticidal modes of action) for stink bug IPM.

The United Soybean Research Retention policy will display final reports with the project once completed but working files will be purged after three years. And financial information after seven years. All pertinent information is in the final report or if you want more information, please contact the project lead at your state soybean organization or principal investigator listed on the project.