Scouting for Fall Armyworm

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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.

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