Sorption and desorption behavior of herbicide clomazone in soils from Brazil

Authors

  • Gustavo Antônio Mendes Pereira Universidade Federal de Viçosa/Departamento de Fitotecnia http://orcid.org/0000-0002-9063-3500
  • Dayana Alves Rodrigues Universidade Federal de Viçosa
  • Letícia Assis Barony Valadares Fonseca Universidade Federal de Viçosa
  • Ana Beatriz Rocha de Jesus Passos Universidade Federal de Viçosa
  • Marcos Raphael Freitas da Silva Universidade Federal de Viçosa
  • Daniel Valadão Silva Universidade Federal Rural do Semi-Árido
  • Antonio Alberto da Silva Universidade Federal de Viçosa

DOI:

https://doi.org/10.14393/BJ-v34n6a2018-39492

Keywords:

Herbicides, Soil behavior, Environmental impact, HPLC

Abstract

The knowledge of the processes that affect soil herbicide behavior allows to developing practices that improve efficiency in chemical weed control and reduce the negative impacts of cropping-systems. In this research, we used HPLC to determine sorption and desorption of clomazone in Brazilian soil samples (Red-Yellow Latosol with liming and without liming, Red latosol with and without liming, and Organosol). To study clomazone sorption, we used the batch equilibrium method. Clomazone concentrations in soil samples were determined by HPLC. Desorption was quantitated using the samples contained in tubes after sorption testing, repeating the steps followed to quantify sorption. The Freundlich isotherm adequately describe clomazone sorption in all soils. Variation in pH in Red-Yellow Latosol and Red Latosol did not change clomazone sorption. The values of the Freundlich constant (Kf) indicate that clomazone sorption is higher in Organosol, followed by Red latosol (with liming) = Red latosol (without liming) > Red-Yellow Latosol (with liming) = Red-Yellow Latosol (without liming). We conclude that among the attributes evaluated, soil organic matter has the highest impact on clomazone sorption. There was a direct relationship between Kf values and organic matter content of the substrates. Desorption of clomazone was very low in the evaluated soils, with the exception of Organosol, where quantification of the herbicide was possible.

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Author Biography

Gustavo Antônio Mendes Pereira, Universidade Federal de Viçosa/Departamento de Fitotecnia

Bolsista de pós-doutorado  (CAPES) na Área de Matologia do Departamento de Fitotecnia da UFV.

 

Published

2018-12-14

How to Cite

PEREIRA, G.A.M., RODRIGUES, D.A., FONSECA, L.A.B.V., PASSOS, A.B.R. de J., DA SILVA, M.R.F., SILVA, D.V. and DA SILVA, A.A., 2018. Sorption and desorption behavior of herbicide clomazone in soils from Brazil . Bioscience Journal [online], vol. 34, no. 6, pp. 1496–1504. [Accessed30 November 2022]. DOI 10.14393/BJ-v34n6a2018-39492. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/39492.

Issue

Section

Agricultural Sciences