Scouting for Fall Armyworm
KEY POINTS:
- Fall armyworm is an occasional pest of corn in the Southern U.S. and Texas
- Fields planted to non-Bt hybrids, as well as late-planted, and late-maturing fields are at greatest risk for injury.
- Feeding typically occurs in whorl-stage corn
- Action threshold for insecticide treatment is 20% of whorl stage plants infested with live larvae.