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Pesquisa Agropecuária Tropical
Article . 2007
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SELETIVIDADE DE INSETICIDAS AO COMPLEXO DE INIMIGOS NATURAIS NA CULTURA DO ALGODÃO (Gossypium hirsutum L.) SELECTIVITY OF INSECTICIDES ON THE COMPLEX OF NATURAL ENEMIES IN COTTON CROP (Gossypium hirsutum L.)

Authors: Fábio Shigeo Takatsuka; Edgar Alves da Silva; Lucimar Martins Silva; Ohana Daroszewski Rodrigues; Karina Cordeiro Albernaz; Paulo Marçal Fernandes; Jácomo Divino Borges; +1 Authors

SELETIVIDADE DE INSETICIDAS AO COMPLEXO DE INIMIGOS NATURAIS NA CULTURA DO ALGODÃO (Gossypium hirsutum L.) SELECTIVITY OF INSECTICIDES ON THE COMPLEX OF NATURAL ENEMIES IN COTTON CROP (Gossypium hirsutum L.)

Abstract

<!-- @page { margin: 2cm } --> <p class="western" align="justify">Avaliou-se a seletividade de inseticidas sobre o complexo de inimigos naturais na cultura do algodão (<em>Gossypium hirsutum L.</em>), no município de Goiânia, GO. Utilizou-se a cultivar Deltapine e o delineamento experimental em blocos ao acaso, com sete tratamentos e quatro repetições. Os tratamentos foram: testemunha, thiamethoxam (300 g.ha<sup><span style="font-style: normal;">-1</span></sup>), lufenuron (300 mL.ha<sup><span style="font-style: normal;">-1</span></sup>), betacyflutrin (800 mL.ha<sup><span style="font-style: normal;">-1</span></sup>), imidacloprid (70 g.ha<sup><span style="font-style: normal;">-1</span></sup>), diflubenzuron (6,0 g.ha<sup><span style="font-style: normal;">-1</span></sup>), endosulfan (1500 mL.ha<sup><span style="font-style: normal;">-1</span></sup>), em suas apresentações comerciais. A pulverização dos inseticidas foi efetuada aos 45 dias após a emergência das plantas. Além da avaliação prévia, foram efetuadas avaliações aos três e sete dias após a aplicação dos inseticidas. As amostragens foram realizadas através do método de batida de pano, com duas batidas ao acaso por parcela, identificando-se e contando-se, o número de inimigos naturais presentes. Três dias após a aplicação dos tratamentos, os inseticidas thiamethoxam (300 g.ha<sup><span style="font-style: normal;">-1</span></sup>), lufenuron (300 mL.ha<sup><span style="font-style: normal;">-1</span></sup>) e diflubenzuron (60 g.ha<sup><span style="font-style: normal;">-1</span></sup>), considerando os produtos comerciais, não apresentaram efeito de choque sobre o complexo de inimigos naturais presentes na cultura do algodoeiro. Entretanto, aos sete dias após a aplicação, apenas o tratamento com lufenuron manteve a seletividade.a esses artrópodes predadores.</p> <p class="western" align="justify">PALAVRAS-CHAVE: Inseticida; controle biológico; <em>Gossypium</em>.</p><!-- @page { margin: 2cm } --> <p class="western" align="justify">The selectivity of insecticides was evaluated in the complex of natural enemies of the cotton (<em>Gossypium hirsutum L</em>.) crop. The cultivar Deltapine was used in a randomized block experimental design, with seven treatments and four replications. The treatments, all in their commercial formulation, were: control; thiamethoxam (300 g.ha<sup>-1</sup>); lufenuron (300 mL.ha<sup>-1</sup>); betacyflutrin (800 mL.ha<sup>-1</sup>); imidacloprid (70g.ha<sup>-1</sup>); diflubenzuron (6,0 g.ha<sup>-1</sup>); and endosulfan (1500 mL.ha<sup>-1</sup>). The insecticides were sprayed at 45 days after germination. Besides the initial evaluation, other evaluations were performed three and seven days after insecticide application. Each plot was sampled by the fabric beating method, with two random beatings per plot. Natural enemies were identified and counted. Three days after application, the insecticides thiamethoxam (300 g.ha<sup>-1</sup>), lufenuron (300 mL.ha<sup>-1</sup>), and diflubenzuron (60 g.ha<sup>-1</sup>) did not showed negative effect on the complex of predators present in the cotton. However, seven days after application, only the lufenuron treatment maintained the selective effect over predator complex.</p> <p class="western">KEY-WORDS: Insecticide; biological control; <em>Gossypium</em>.</p>

Keywords

Inseticida, Gossypium, Agriculture (General), controle biológico, S1-972

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
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