Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/38643
Title: Influência do sistema de manejo na retenção e mobilidade da atrazina em amostras de solos
Other Titles: Influence of management systems in the retention and mobility of atrazine in soil samples
Keywords: Deslocamento miscível
Atrazina
Plantio convencional
Miscible displacement
Atrazine
Conventional till system
Issue Date: 2012
Publisher: Universidade Federal Rural de Pernambuco
Citation: ARANTES, S. A. et al. Influência do sistema de manejo na retenção e mobilidade da atrazina em amostras de solos. Revista Brasileira de Ciências Agrárias, Recife, v. 7, n. 1, p. 167-173, 2012.
Abstract: Atrazine is one of the most used pesticides in Brazil, however, its dynamic in soils is still unknown, specially regarding different management systems. Thus, the aim of this work was to evaluate the sorption and leaching of atrazine in a dystroferric Red Latosol cultivated under no-till or conventional till management system. Sorption was evaluated using the “batch” method and the miscible displacement method, using undisturbed soil columns from 0-20 cm layer. Results were expressed by Freundlich isotherm and the elution curves were to the dispersive-convective model in order to obtain the retardation factor (R) and the hydrodynamic dispersion coefficient (D). No significant difference of the the Freundlich coefficient (Kf ) was found in the soil samples under no-till or conventional till management systems. The retardation factor was higher and the hydrodynamic dispersion coefficient was lower in the samples under conventional till system, showing evidences of a higher leaching potential in soils under no-till system.
URI: http://repositorio.ufla.br/jspui/handle/1/38643
Appears in Collections:DCS - Artigos publicados em periódicos



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