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Plants
with damage from Fall Armyworms display tissue
removed from the leaf edges; often only the midrib remains. Larvae begin eating
near the edges of the leaf, consuming all of the leaf except for the tougher
midrib. Feeding starts on the lower leaves and progresses up the plant. The
whorl leaves are eaten last. Armyworms are usually easy to observe on the leaves
and rarely hide in the whorl like European corn borers. Up to a dozen larvae may
feed on the same plant.
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