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vol.22 número2Tolerância de milho tratado com inseticidas a herbicidas do grupo das imidazolinonasFitorremediação do herbicida trifloxysulfuron sodium índice de autoresíndice de assuntospesquisa de artigos
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Planta Daninha

versão impressa ISSN 0100-8358

Resumo

PROCOPIO, S.O. et al. Plant selection with potential for phytoremediation of soils contaminated with trifloxysulfuron sodium. Planta daninha [online]. 2004, vol.22, n.2, pp. 315-322. ISSN 0100-8358.  http://dx.doi.org/10.1590/S0100-83582004000200020.

This study aimed to identify trifloxysulfuron sodium-selective plants to be used in phytoremediation programs for this herbicide in soil. Ten plants were evaluated: Medicago sativa, Avena strigosa, Crotalaria juncea, Canavalia ensiformis, Helianthus annus, Dolichus lablab, Stylosantes guianensis, Mucuna deeringiana, Raphanus sativus and Eleusine indica. A randomized block design with split-plots and three replications was used, with the plots being the doses of trifloxysulfuron sodium (0.00; 3.75; 7.50; and 15.00 g ha-1) and the splitplots the evaluation times [15, 30, 45, and 60 days after sowing (DAS)]. Plant height and phytotoxicity visual symptoms were evaluated, and, at 60 DAS, dry biomass yield was recorded. It was verified that all species survived the presence of trifloxysulfuron sodium in soil, even when the herbicide was applied at 2x the recommended dose (15.00 g ha-1); however, the species M. deeringiana, D. lablab, C. juncea and S. guianenesis were the most tolerant to the herbicide, indicating potential for use in trifloxysulfuron sodium phytoremediation programs in soils.

Palavras-chave : selectivity; phytotoxicity; decontamination; green manure; weeds.

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