produtos naturais e sintéticos no controle de leucoptera coffeella (guérin-mèneville & perrottet, 1842) (lepdoptera: lyonetiidae) e seus efeitos sobre a predação por vespas natural and sinthetic products in the control of leucoptera coffeella (guérin-mèneville & perrottet, 1842) (lepidoptera: lyonetiidae) and their effects on predation for wasps
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Abstract
The control of the coffee leaf miner Leucoptera coffeella (Guérin-Mèneville & Perrottet, 1842) by broad spectrum pesticides can cause great ecological problems. Thus, the search for products with low toxicity and that do not affect natural enemies is necessary. The objective of the present work was to evaluate the action of natural products like pyroligneous extract Biopirol® (2.0; 4.0; 8.0 and 16.0%) and azadirachtin Nim-I-Go® (0.25; 0.50; 0.75 and 1.0%) and the pesticides lambdacyhalothrin (0.01 mg a.i./mL) and ethion (1.5 mg a.i./mL) over coffee leaf miner and their effects over predator wasps, under field conditions. In order to achieve that, an experimental field of around 1,2 ha was installed, in a coffee plantation of the cultivar Catuaí Vermelho, in Lavras, MG. It was noted that the concentrations of pyroligneous extract and azadirachtin did not control the leaf miner and did not affect the predation for wasps. However, the larvae were killed by ethion, right after its application, being the effect weaker as the time passed. Lambdacyhalothrin presented the lower toxicity to the larvae after its application, followed by a significant increase in the control along the time.
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mendona2006cinciaprodutos
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| Authors | ;José Marcos Angélico de Mendonça;Geraldo Andrade Carvalho;Rubens José Guimarães;Paulo Rebelles Reis;Luiz Carlos Dias Rocha |
| Journal | information and software technology |
| Year | 2006 |
| DOI |
10.1590/S1413-70542006000500011
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