Influência da cobertura morta no comportamento dos herbicidas imazaquin e clomazone

  • Rodrigues B
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Abstract

Experimentos de campo e bioensaios em casa-de-vegetação foram realizados para se estudar a influência da cobertura morta de trigo (Triticum aestivum L.) no comportamento dos herbicidas imazaquin {ácido 2-[4,5 dihidro-4-metil-4-(1-metiletil)-5-oxo-1H-imidazol-2-ilo]-3-quinolinacarboxílico} e clomazone {2-[(2-clorofenil)metil]-4,4-dimetil-3-isoxazolidinona}, aplicados em pré-emergência na cultura da soja [Glycine max (L.) Merril], no sistema de plantio direto. O clomazone mostrou evidências de ter sido interceptado pela cobertura morta. A presença da cobertura morta não influiu na retenção do imazaquin, sendo este lixiviado da palha para o solo com as chuvas que ocorreram após a aplicação.Field experiments and glass house bioassays were conducted to determine the influence of winter wheat (Triticum aestivum L.) straw mulch on the behaviour of the herbicides imazaquin {2-[4,5-dihydro-4-methyl-4-(1-ethyl)-5-oxo-1H-imidazol-2-yl]-3-quinolinecarboxylic acid} and clomazone {2-[(2-chlorophenyl)methyl]-4,4-dimethyl-3- isoxazolidinone}, wich had been applied to pre-emergence soybean (Glycine max)in a no-till system. There was evidence that clomazone had been intecepted by the straw whilst imazaquin was leached into the soil by rain.

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APA

Rodrigues, B. N. (1993). Influência da cobertura morta no comportamento dos herbicidas imazaquin e clomazone. Planta Daninha, 11(1–2), 21–28. https://doi.org/10.1590/s0100-83581993000100004

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