| Atividade inseticida de óleo de nim (Azadirachta indica a. Juss, meliaceae) sobre spodoptera frugiperda (Smith, 1797) (Lepidoptera: noctuidae) | |
Abstract/OtherAbstract
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</P> <div align="justify">The neem oil is a bioinsecticide used in the control of many pests, between them, Spodoptera frugiperda, pest of considerable economic importance to an array of cultures. The aim of this work was to evaluate the efficiency of the neem oil in the control of S. frugiperda and its effects in the insect development. A completely randomized blocks design with seven treatments and 45 replicates was used. The treatments were: neem oil added to the artificial diet in the concentrations of 0,5; 1, 2 and 3%, treatment sprayed with neem oil (0,5%), treatment sprayed with Lorsban 480 BR and control sprayed with water. To the sprayed treatments and the control, the larvae were fed with artificial diet in the absence of oil, although to the others, the larvae were fed with a diet where neem oil was added, for seven days and after that period they were transferred to the usual diet. The parameters evaluated during the experiment were: percentage of died larvae, length of larvae, number and weight of pupae. To the treatments where neem oil was added in the concentrations of 2 and 3%, the percentage of died larvae was statistically the same to the treatment sprayed with Lorsban 480 BR. Larvae fed with artificial diet where neem oil was added (2 and 3%) were smaller than the others. The number and weight of pupae were significativelly inferior in the treatment where neem oil was added to the diet in the concentration of 0,5 %. To the other concentrations (1, 2 and 3%) the larvae did not get to the pupae stage. Larvae that were fed neem oil added to the diet had their cycle retarded when compared to the treatment sprayed with neem oil and the control, what proved the bioinsecticide effect in their development.</div> Key words: azadirachtin, bioinsecticide, Spodoptera. |
Authors
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Jakoby, G.L.; CEFET-RV; ecossistema@unipinhal.edu.br, Cardoso, I.C.M.; CEFET-RV; ecossistema@unipinhal.edu.br, de Freitas Bueno, R.C.O.; ESALQ/USP; ecossistema@unipinhal.edu.br, Bueno, A.F.; Dow Agrosciences; ecossistema@unipinhal.edu.br |
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Contributors
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Publication Detail
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Publisher : UNIPINHAL Type : Avaliação pelos pares ARTI, Format : - |
Date Detail
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2007-07-10 |
Subject
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- , Azadiractina; Bioinseticida; Spodoptera. |
Coverage
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; ; |
Relation
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- |
Source
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Ecossistema; Vol. 30, No. 2 (2005) |
Copyright Information
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Copyright for articles published in this journal is retained by the authors, with first publication rights granted to the journal. By virtue of their appearance in this open access journal, articles are free to use, with proper attribution, in educational and other non-commercial settings. |
Other Details
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Languages : en; pt; es |
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