African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6576

Full Length Research Paper

Peat influence on Zn tolerance, bioconcentration and bioaccumulation in Eucalyptus grandis Hill ex Maiden

Rodrigo Ferreira da Silva*
  • Rodrigo Ferreira da Silva*
  • Department of Agronomic and Environmental Sciences, Universidade Federal de Santa Maria, Campus Frederico Westphalen, City of Frederico Westphalen, State of Rio Grande do Sul, Brazil.
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Rudinei De Marco
  • Rudinei De Marco
  • Post-Graduation in Agronomy, Universidade Federal de Pelotas, City of Pelotas, State of Rio Grande do Sul, Brazil.
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Alex Negrini
  • Alex Negrini
  • Department of Agronomic and Environmental Sciences, Universidade Federal de Santa Maria, Campus Frederico Westphalen, City of Frederico Westphalen, State of Rio Grande do Sul, Brazil.
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Claudir Jose Basso
  • Claudir Jose Basso
  • Department of Agronomic and Environmental Sciences, Universidade Federal de Santa Maria, Campus Frederico Westphalen, City of Frederico Westphalen, State of Rio Grande do Sul, Brazil.
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Vanderlei Rodrigues da Silva
  • Vanderlei Rodrigues da Silva
  • Department of Agronomic and Environmental Sciences, Universidade Federal de Santa Maria, Campus Frederico Westphalen, City of Frederico Westphalen, State of Rio Grande do Sul, Brazil.
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Alexandre Swarowsky
  • Alexandre Swarowsky
  • Department of Environmental Engineering, Centro Universitário Franciscano, City of Santa Maria, State of Rio Grande do Sul, Brazil.
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Douglas Leandro Scheid
  • Douglas Leandro Scheid
  • Post-Graduation in Soil Science, Universidade Federal de Santa Maria, City of Santa Maria, State of Rio Grande do Sul, Brazil.
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Marcia Matsuoka
  • Marcia Matsuoka
  • Department of Agronomic and Environmental Sciences, Universidade Federal de Santa Maria, Campus Frederico Westphalen, City of Frederico Westphalen, State of Rio Grande do Sul, Brazil.
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Clovis Orlando Da Ros
  • Clovis Orlando Da Ros
  • Department of Agronomic and Environmental Sciences, Universidade Federal de Santa Maria, Campus Frederico Westphalen, City of Frederico Westphalen, State of Rio Grande do Sul, Brazil.
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Paola Daiane Welter
  • Paola Daiane Welter
  • Department of Agronomic and Environmental Sciences, Universidade Federal de Santa Maria, Campus Frederico Westphalen, City of Frederico Westphalen, State of Rio Grande do Sul, Brazil.
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  •  Received: 29 November 2016
  •  Accepted: 19 January 2017
  •  Published: 02 February 2017

Abstract

Soil contamination with zinc occurs in mining and agricultural areas through successive applications of pig slurry. Essential to the selection and adaptation of plants to contaminated soil, is the study of species showing not only tolerance but also bioaccumulation or bioconcentration of zinc associated with amelioration. In this context, this study aimed to evaluate the influence of peat addition on the tolerance, bioconcentration and bioaccumulation of Zn in Eucalyptus grandis seedlings. A completely randomized experimental design was used, in a factorial arrangement (2 x 6), with and without the addition of peat (200 mL L-1 soil) and six doses of Zn (zero, 200, 400, 600, 800 and 1000 mg kg-1) with 15 replications, conducted for 120 days. The height, stem diameter, root and shoot dry weight, concentration and Zn content in the root system and aerial parts, indices of tolerance and translocation, and bioaccumulation factors and bioconcentration were evaluated. The addition of 200 mL L-1 of peat provided increased tolerance and a stimulating effect on morphological parameters of E. grandis seedlings. This species, however, did not concentrate zinc to the extent that it could be considered a bioaccumulating plant.

Key words: Contaminated soil, phytoremediation, zinc contamination, amelioration.