Aspectos fisiológicos de plantas com potencial remediador de solo contaminado com sulfentrazone e picloram

• Autor(a) principal: Belo, Alessandra Ferreira
• Data de Publicação: 2010
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://locus.ufv.br/handle/123456789/1225
• topic: Impacto ambiental; Descontaminação; picloram; sulfentrazone e fotossíntese; Environmental impact; decontamination; picloram; sulfentrazone and photosynthesis; CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::FITOTECNIA

The aimed of this work was to evaluate the potentiality of vegetal species in remediation of contaminated soils with the herbicides sulfentrazone and picloram, through phytoremediation process, as well as, the influence of these herbicides in the variables associated to photosynthetic activity of these species. For that, were conducted four experiments in greenhouse. In the first, was evaluated the effects of herbicide sulfentrazone on characteristics associated to photosynthetic activity of species Helianthus annus, Canavalia ensiformis, Dolichos lab lab and Arachis hypogaea; in second, was evaluated the potential of these same species in soil remediation contaminated by sulfentrazone; in the third, was evaluated the effects of herbicide picloram on characteristics associated to photosynthetic activity of species Brachiaria brizantha, Brachiaria decumbens, Eleusine coracana and Zea mays; and in fourth, was evaluated the potential of these same species in soil remediation contaminated by picloram. For soil contaminated with sulfentrazone, was found that the variables associated with photosynthetic activity of the studied species may be affected. However, the dry matter accumulation of these species was not compromised, independently of herbicide concentration in the soil, demonstrating the tolerance of species to sulfentrazone. H. annus showed the best capacity of remediation of contaminated soil with this herbicide. For soil contaminated with picloram, was found that Z. mays was less affected by this herbicide, based on physiological attributes. Was found also that B. brizantha, B. decumbens, E. coracana and Z. mays showed potential remediation of contaminated soil by picloram, however, B. decumbens, E. coracana and B. brizantha were more efficient than Z. mays.