RHIZOSPHERE ACTIVITY OF SOIL TREATED WITH HERBICIDE DURING REMEDIATION PROCESS BY Stizolobium aterrimum

Authors

  • Edson Aparecido dos Santos Federal University of Viçosa image/svg+xml
  • Mauricio Dutra Costa Federal University of Viçosa image/svg+xml
  • Lino Roberto Ferreira Federal University from Jequitinhonha and Mucuri's Valleys image/svg+xml
  • Marcelo Rodrigues dos Reis Federal University of Tocantins image/svg+xml
  • André Cabral França Federal University from Jequitinhonha and Mucuri's Valleys image/svg+xml
  • José Barbosa dos Santos Federal University from Jequitinhonha and Mucuri's Valleys image/svg+xml

DOI:

https://doi.org/10.5216/pat.v40i1.4670

Keywords:

Microbiological indicator, phytoremediation, microbial biomass

Abstract

This study aimed to evaluate the soil microbiota activity associated to S. aterrimum rhizosphere, during the phytoremediation process of a soil contaminated with trifloxysulfuron-sodium. S. aterrimum was cultivated in vases (6,0 L) filled with soil, after trifloxysulfuron-sodium, at 7.5 g ha-1, was applied or not. Every 15 days after sowing (DAS), rhizospheric soil was collected for soil microbial respiration (amount of evolved CO2) and microbial biomass carbon (MBC) analysis. To determine herbicide residues in the soil samples, after phytoremediation, Sorghum bicolor L. was cultivated as an indicator species, in addition to high performance liquid chromatography (HPLC) analysis. The microbiota associated to S. aterrimum rhizosphere showed to be sensitive to trifloxysulfuron-sodium and may be used as a microbiological indicator of disturbances caused by this herbicide in the environment. Regarding time for remediation, 45 days of development is enough for S. aterrimum to reduce residual trifloxysulfuron-sodium to a level not able to cause toxicity to the indicator plant.

KEY-WORDS: Microbiological indicator; phytoremediation; microbial biomass.

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Published

2010-04-05

Issue

v. 40, n. 1, Jan./Mar. 2010

Section

Soil Science

License

Authors will not be paid for published articles and must waive their copyright in favor of the PAT journal. On the other hand, they are solely responsible for the content of those articles, even if the Editor holds the right to adjust them to the norms of the journal. Authors are allowed to publish their articles simultaneously in their institutional repositories, as soon as the original publication at the PAT journal is mentioned.

How to Cite

SANTOS, E. A. DOS et al. RHIZOSPHERE ACTIVITY OF SOIL TREATED WITH HERBICIDE DURING REMEDIATION PROCESS BY Stizolobium aterrimum. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], v. 40, n. 1, p. 1–7, 5 Apr.2010.