Skip to main content
Entomology 2023 Main banner
Bayer
Icon Legend
This session is not in your schedule.
This session is in your schedule. Click again to remove it.
Presentation Icons
In-Person
In-Person
On-Demand
On-Demand
Student Competition
Student Competition
Poster
Poster
Ticketed Event
Ticketed Event
Back
ViewAttendees 5

10-Minute Paper

Plant-Insect Ecosystems

P-IE: IPM - Field Crops 1

Plant-to-plant movement of western bean cutworm in structured and seed blend refuge systems of Bt and non-Bt corn

Wednesday, November 8, 2023
9:48 AM – 10:00 AM ET
Location: Gaylord National Resort & Convention Center, Maryland 5-6
In-Person
The use of refuge is one of the main components of insect resistance management plans for Bt crops. However, the success of this practice relies on a comprehensive understanding of the target pest’s behavior. This is important for western bean cutworm, Striacosta albicosta, since Vip3A is the only Bt protein remaining to control this pest. In addition, even though studies have shown that S. albicosta larvae move on plant and between plants, little is known about its plant-to-plant instar-specific movement in corn refuge systems. Therefore, the goal here was to characterize the instar-specific larval movement of S. albicosta in a blended refuge corn field. To achieve this goal, 3rd and 5th instar larvae were released on the central plant of plots of pure Bt, pure non-Bt and blended refuge (10%) plants. For each larval movement period, the number of larvae recovered, larval instar, percentage of larval survival, and position of the larvae were recorded. In the long-term, our data will help to enhance stewardship of the Vip3A trait for S. albicosta management.