FMC SOLUTIONS
Corn Earworm
Corn earworm (Helicoverpa armigera Hubner) is a polyphagous insect affecting a wide range of host crops including corn
What are the symptoms
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Early instars feed on young unfolding leaves up to the whorl, while late instar larvae feed on whorl causing match head holes. Third instar larvae feed inside developing ears when flag leaf are still intact.
Impact to the Crop
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Feeding damage directly affects the quantity and quality of yield.
How to control
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√ Use of natural enemies such as parasitoids and entomopathogenic organisms
√ Sex pheromone, F1 sterile technique
√ Cultural and chemical methods
Source: Dela Cueva, et. al., 2015
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