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ENSAIO DE CAMPO VISANDO AO CONTROLE DA LAGARTA ROSADA DO ALGODOEIRO Pectinophora gossypiella (Saund. 1844) CHEMICAL CONTROL OF COTTON PINK BOLLWORM (Pectinophora gossypiella SAUND., 1844) WITH A NEW INSECT GROWTH REGULATOR

DOI: 10.5216/pat.v27i2.2963

Keywords: Inseto , Gossypium hirsutum , controle de pragas , Pectinophora gossypiella , insecta

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Abstract:

Foi conduzido em 1995/96, na área experimental da Escola de Agronomia da Universidade Federal de Goiás, um experimento objetivando o controle da lagarta rosada do algodoeiro Pectinophora gossypiella utilizando o chlorfluazuron CE, um produto fisiológico sintético, nas doses de 25,0, 37,5 e 50,0 g de ingrediente ativo (i.a.) por hectare, comparado com Deltamethrina CE na dose de 12,5 g i.a./ha e Cypermetrina CE na dose de 50,0 g i.a./ha e uma testemunha. Os dados obtidos permitiram concluir que Deltamethrin CE e Cypermetrina CE, nas citadas dosagens, foram altamente eficientes no controle da lagarta rosada do algodoeiro, enquanto o Chlorfluazuron CE, nas três dosagens testadas, efetivamente, n o controlou a praga em quest o. PALAVRAS-CHAVE: Inseto; Gossypium hirsutum; controle de pragas; Pectinophora gossypiella; insecta. A trial to control the pink bollworm (Pectinophora gossypiella), using a new insect growth regulator was carried out in Goiania, Goiás, Brazil. The Chlorfluazuron CE at 25, 37.5 and 50.0 g a.i./ha was compared to Deltamethrin CE at 12.5 g a.i./ha and Cypermethrin CE at 50.0 g a.i./ha, plus an untreated check. Data show that Deltamethrin CE and Cypermethrin CE at the tested dosages were efficient in controlling the pink bollworm, and Chlorfluazuron CE in the three tested dosages did not control the pink bollworm efficiently. KEY-WORDS: Gossypium hirsutum; Pectinophora gossypiella; insecta; pest control.

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