SciELO - Scientific Electronic Library Online

 
vol.10 número2Operação de filtros orgânicos utilizados no tratamento de águas residuárias de suinoculturaEfeitos de diferentes sistemas de acondicionamento ambiente sobre o desempenho produtivo de frangos de corte índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Revista Brasileira de Engenharia Agrícola e Ambiental

versão On-line ISSN 1807-1929

Resumo

GOMES, Marco A. F. et al. Movement of the tebuthiuron herbicide in two representative soils of recharge areas of the Guarani aquifer. Rev. bras. eng. agríc. ambient. [online]. 2006, vol.10, n.2, pp. 479-483. ISSN 1807-1929.  http://dx.doi.org/10.1590/S1415-43662006000200032.

The movement of the tebuthiuron herbicide was analyzed in two representative soils - Quatzipsammentic Haplorthox, Typic Quartzipsamment, of the recharge areas of the Guarani aquifer in Brazil. The main factors in this movement are hydraulic conductivity (K), organic carbon content (OC) and clay content (CT). The experiment was carriel out in columns (type lisimeters) with application of the commercial product. These parameters showed great influence on the vertical movement of the tebuthiuron herbicide, specially in the Typic Quartzipsamment soil. The high (K) values in this soil have a direct relationship with tebuthiuron collected in water percolated by columns. Inverse relationship between carbon content (OC) and clay content (CT) with hydraulic conductivity (K) was observed. The results obtained aim to subside assessment of environmental risks, mainly groundwater from aquifer recharge areas naturally fragile, with emphasis for the Guarani aquifer.

Palavras-chave : Quatzipsammentic Haplorthox; Typic Quartzipsamment; hydraulic conductivity; groundwater.

        · resumo em Português     · texto em Português     · pdf em Português