The Arizona Vegetable Integrated Pest Management Update from the University of Arizona (UA) Cooperative Extension in Yuma, Ariz. released Oct. 2, 2013. IRM guidelines for Lepidopterous larvae in lettuce By John Palumbo, UA research scientist and Extension specialist Lepidopterous larvae, including beet armyworm, cabbage looper, and corn earworm, are major pests of leafy vegetables grown in the Desert Southwest. Typically, larval populations begin infesting newly planted produce ...

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