Western Bean Cutworm 2023 Flight: Moth Captures Exceed Last Two Years

Tracking the western bean cutworm moth flight wouldn’t be possible without the many pheromone trap cooperators in our network, see following “Western Bean Cutworm Pheromone Trap Report.” To those volunteers, we are so grateful! Please thank any of those cooperators that you may know for their efforts in helping us track this pest to better time scouting efforts. Buy them a sandwich, or ice cream!



WBC bucket


In looking at a comparison of the 5-year moth captures (see graph below), there were plenty of moths flying the third week of July (week 5 of trapping). Over our years of trapping this pest, that period has consistently been the peak moth flight. Soon after that time, we were getting reports of egg masses being found on pre-tassel corn. Since then, no reports of larval ear infestations have been received from northern Indiana counties, where risks are greatest. We are likely through the vast majority of egg-laying and the treatment window has passed. The uncertain news is what this pest will do next year, as the previous two years were very low counts. Stay tuned and happy scouting!!!


Young larva, and early ear tip damage, revealed after pulling down the husks. (Photo Credit: John Obermeyer)

Young larva, and early ear tip damage, revealed after pulling down the husks. (Photo Credit: John Obermeyer)

Share This Article
It is the policy of the Purdue University that all persons have equal opportunity and access to its educational programs, services, activities, and facilities without regard to race, religion, color, sex, age, national origin or ancestry, marital status, parental status, sexual orientation, disability or status as a veteran. Purdue is an Affirmative Action Institution. This material may be available in alternative formats. 1-888-EXT-INFO Disclaimer: Reference to products in this publication is not intended to be an endorsement to the exclusion of others which may have similar uses. Any person using products listed in this publication assumes full responsibility for their use in accordance with current directions of the manufacturer.
Pest&Crop newsletter - Department of Entomology Purdue University 901 Mitch Daniels Blvd West Lafayette, IN 47907

© 2024 Purdue University | An equal access/equal opportunity university | Copyright Complaints | Maintained by Pest&Crop newsletter

If you have trouble accessing this page because of a disability, please contact Pest&Crop newsletter at luck@purdue.edu.