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Survival of Helicoverpa zea (Lepidoptera: Noctuidae) larvae as affected by subfreezing temperatures in the subtropics



Survival of Helicoverpa zea (Lepidoptera: Noctuidae) larvae as affected by subfreezing temperatures in the subtropics



Southwestern Entomologist 21(2): 209-211



Field and laboratory studies in northern Tamaulipas, Mexico, on the susceptibility of larvae of Helicoverpa zea to subfreezing temperatures showed that they were dramatically affected only when exposed for several hours to temperatures of -5 degrees C or lower, which is very unlikely to occur in the area in question.

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