Please use this identifier to cite or link to this item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/9883
Research center of Embrapa/Collection: Embrapa Meio Ambiente - Artigo em periódico indexado (ALICE)
Date Issued: 1989
Type of Material: Artigo em periódico indexado (ALICE)
Authors: CAMPAGNOLLA, C.
PLAPP JUNIOR, F. W.
Additional Information: CLAYTON CAMPAGNOLLA, SGE; F. W. PLAPP JUNIOR, Texas A&M University.
Title: Toxicity and synergism of insecticides against susceptible and pyrethroid-resistant third instars of the tobacco budworm (Lepidoptera: Noctuidae).
Publisher: Journal of Economic Entomology, v. 82, n. 6, p. 1495-1501, dez. 1989.
Language: en
Keywords: Bugs
Insecticide
Pyrethroid
Resistence
Susceptibility
Insect
Pest
Tobacco budworms
Description: Third-instar tobacco budworms, Heliothis, susceptible or resistant to pyrethroids were tested by exposure to residues of insecticides in glass liquid scintilillation vials. These biossays were done to find alternative insecticides or insecticide combinations for control of larvae resistant to pyrethroids, to evaluate the effect of synergists on insecticide toxicity and resistance, and to establish the main mechanisms of resistance present. Insecticides effective for control of resistant third-instar tobacco budworms included profenofos, sulprofos, acephate, endusulfan, methomyl, and thiodicarb. Cypermethrin combined with chlordimeform, piperonyl butoxide nor chlordimeform produced more thenfive-fold synergism. The only synergistic insecticide combination against resistant larvae was cypermethrin plus methyl parathion. Thus, use of other combinations had no advantage compared with use of alternative insecticides. High-level cypermethrin resistance, resistance to methyl parathion, and synergism of these insecticides by piperonyl butoxide provide evidence for metabolic resistance in this life stage. Therefore, we conclude that metabolic resistance seems to be the most important mechanism in large tobacco budworms.
Thesagro: Heliothis Virescens
NAL Thesaurus: Lepidoptera
Noctuidae
chemical control
synergism
toxicity
Data Created: 1991-03-25
Appears in Collections:Artigo em periódico indexado (CNPMA)

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