Potencial de produtos derivados de Azadirachta indica no controle de Anticarsia gemmatalis (Lepidoptera: Noctuidae)

• Ano de defesa: 2009
• Autor(a) principal: Almeida, Gustavo Dias de
• Orientador(a): Zanuncio, José Cola
• Banca de defesa: Polanczyk, Ricardo Antônio , Cruz, Ivan
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Viçosa
• Programa de Pós-Graduação: Mestrado em Fitotecnia
• Departamento: Plantas daninhas, Alelopatia, Herbicidas e Resíduos; Fisiologia de culturas; Manejo pós-colheita de
• País: BR
• Palavras-chave em Português: Lagarta desfolhadora da soja; Azadiractina; Deterrência alimentar; Citoxicidade; Expressão de proteínas; Azadirachta indica; Anticarsia gemmatalis
• Palavras-chave em Inglês: Soybean defoliator cartepillar; Azadirachtin; Citotoxicity; Protein expression; Azadirachta indica; Anticarsia gemmatalis
• Área do conhecimento CNPq: CNPQ::CIENCIAS AGRARIAS
• Link de acesso: http://locus.ufv.br/handle/123456789/4499

The soybean [Glycine max (L.) Merr.] is an important crop in the world with high economic and social value. The carterpillar Anticarsia gemmatalis (Hübner) (Lepidoptera: Noctuidae) is the most important defoliator of soybean in North and South Americas and the search for useful insecticides to control this pest has been studied. The neem, Azadirachta indica A. Juss (Meliaceae) is the plant with high insecticide potential of the world. The azadirachtin, synthesized mainly in the fruits of this plant is the main component responsible for the lethal and sub-lethal action of the extracts obtained from neem. The objective of this study was evaluate the potential of products derived from A. indica on A. gemmatalis in the laboratory and greenhouse conditions. Third stage larvae of A. gemmatalis were fed for four days with artificial diet containing neem seed ethanol extract and oil trade, AzamaxTM. Mortality, food consumption, feces production, weight gain, weight and deformation of pupae at 24 hours old and the number of eggs per female emerged from larvae fed on sub-lethal doses of azadirachtin were evaluated in laboratory. The effects of neem seed extract and the oil trade on mortality and food consumption of larvae of A. gemmatalis in soybean plants in the greenhouse were also evaluated. The neem seed extract and trades Azamax, caused deleterious effects on the A. gemmatalis larvae, as larval and pupal mortality, reduction of food intake and weight gain, disruption of midgut cells and changes in the fat body. Lower dosages of neem seed extract reduced the egg productions of the A. gemmatalis moths. Soybean plants sprayed with both products from A. indica caused high mortality and reduced the damages by A. gemmatalis in greenhouse conditions. The neem products can be used in integrated program management of A. gemmatalis in the soybean crop.