Behavior of Helicorerpa armgera larvae related with pest control
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Key Words：the resistant cotton bollworm, spraying time, control effect
Abstract：In an attempt to better control the resistant cotton bollworm, the behaviro of Helicoverpa armgera Hübner larvae was studied. The result showed that the control effect was related to the spraying time. It was best to spray at dusk when it began to dew, which would improve the control effect 87% and 75.9% than at noon and at sunset, respectively.