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Toxicity of pesticides to adult Diaprepes abbreviatus L. (Coleoptera : Curculionidae)



Toxicity of pesticides to adult Diaprepes abbreviatus L. (Coleoptera : Curculionidae)



Journal of Entomological Science 39(4): 654-669



The purpose of this study was to determine the toxicity of selected pesticides to adult Diaprepes abbreviatus L. Because pesticides applied directly to this weevil were generally ineffective, they were exposed to field rates of pesticide-treated bouquets of fully-expanded, mature citrus leaves. Of the 28 compounds tested at field rates, 14 were effective with 85% or greater mortality within 72 h for male and female Diaprepes beetles. With field rates, 100% mortality was achieved within 72 h with Avaunt(TM), Baythroid(TM), Furadan(TM), Fury(TM), Lannate(TM), and Supracide(TM) for males and females. At a field rate, only Supracide was effective producing 100% mortality within 24 h after exposure. Field rates of Avaunt, Baythroid, Capture, Furdan, Fury, Lannate, and Supracide produced 100% mortality of males and females in 72 h. The field rates of Sevin(TM) and Carzol(TM), currently used for D. abbreviatus, produced mortality levels of about 95% after 72 h. Comparative LC50 showed that toxicity was in the order Baythroid = Fury = Capture = Pounce = Asana > Avaunt = Furadan > Lannate > Supracide > Danitol > Vydate = Sevin = Carzol = Guthion > Imidan = Lorsban.

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Accession: 066187801

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