Corn Earworm

I am continuing to catch a small number of corn earworms in my trap. Usually we talk about earworm moths being attracted to silking corn to lay their eggs. However, moths will lay eggs on whorl stage sweet corn and the larvae can cause damage (Figure 1 and 2). The larvae will often feed inside the whorl, similar to European corn borer feeding. This damage is usually not very serious, but growers with very early sweet corn should be aware of the potential.

Figure 1. Corn earworm larva inside whorl of sweet corn plant (Photo by John Obermeyer).

Figure 1. Corn earworm larva inside whorl of sweet corn plant (Photo by John Obermeyer).

Figure 2. Earworm damage on whorl stage of sweetcorn (Photo Credit: John Obermeyer)

Figure 2. Earworm damage on whorl stage of sweetcorn (Photo by 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.
Vegetable Crops Hotline - Department of Horticulture and Landscape Architecture 625 Agriculture Mall Dr. West Lafayette, IN 47907

© 2018 Purdue University | An equal access/equal opportunity university | Copyright Complaints | Maintained by Vegetable Crops Hotline

If you have trouble accessing this page because of a disability, please contact Vegetable Crops Hotline at guan40@purdue.edu.