| Registro completo |
| Provedor de dados: |
Bragantia
|
| País: |
Brazil
|
| Título: |
Microbial activity of soil with sulfentrazone associated with phytoremediator species and inoculation with a bacterial consortium
|
| Autores: |
Melo,Christiane Augusta Diniz
Souza,Wendel Magno de
Carvalho,Felipe Paolinelli de
Massenssini,André Marcos
Silva,Antonio Alberto da
Ferreira,Lino Roberto
Costa,Maurício Dutra
|
| Data: |
2017-04-01
|
| Ano: |
2017
|
| Palavras-chave: |
Bio-enhancement
Phytostimulation
Herbicide
Metabolic quotient
Microbial quotient
|
| Resumo: |
ABSTRACT Phytostimulation plays a key role in the process of rhizodegradation of herbicides in soil. Additionally, bio-enhancement associated with phytoremediation may increase the efficiency of the decontamination process of soils with herbicides. Therefore, the objective of this study was to evaluate the biomass and microbial activity of soil contaminated with sulfentrazone and cultivated with phytoremediator species plus a bacterial consortium. The experiment was conducted in a greenhouse, carried out with a 2 × 4 × 4 completely randomized factorial design with 4 replications. The first factor consisted of the presence or absence of bio-enhancement with a bacterial consortium composed of Pseudomonas bacteria; the second factor consisted of a monoculture or mixed cultivation of 2 phytoremediator species Canavalia ensiformis and Helianthus annuus, besides the absence of cultivation; the third factor was made up by the bio-remediation time (25, 45, 65, and 85 days after thinning). Uncultivated soils displayed low values of microbial biomass carbon and microbial quotient as well as high values of metabolic quotient throughout the bio-remediation time, indicating the importance of cultivating phytoremediator species for the stimulation of soil microbiota. Bio-enhancement with the bacterial consortium, in general, promoted an increase in the microbial biomass and activity of soil contaminated with sulfentrazone. In the presence of the bacterial consortium, Canavalia ensiformis stimulated a greater activity of associated microbiota and supported a higher microbial biomass. Phytoremediation associated with microbial bio-enhancement are thus promising techniques for the bio-remediation for soils contaminated with sulfentrazone. This technique enhances the biomass and activity of soil microorganisms.
|
| Tipo: |
Info:eu-repo/semantics/article
|
| Idioma: |
Inglês
|
| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000200300
|
| Editor: |
Instituto Agronômico de Campinas
|
| Relação: |
10.1590/1678-4499.203
|
| Formato: |
text/html
|
| Fonte: |
Bragantia v.76 n.2 2017
|
| Direitos: |
info:eu-repo/semantics/openAccess
|
|
