Back to Search
Start Over
Risk of Soil Recontamination Due to Using Eleusine coracana and Panicum maximum Straw After Phytoremediation of Picloram
- Source :
- International journal of phytoremediation. 17(1-6)
- Publication Year :
- 2014
-
Abstract
- This study aimed to evaluate the herbicidal activity of picloram on the biomass of the remediation plants Eleusine coracana and Panicum maximum after cultivation in a soil contaminated with this herbicide. These species were grown in three soils, differentiated based on texture (clayish, middle, and sandy, with 460, 250, and 40 g kg(-1) of the clay, respectively), previously contaminated with picloram (0, 80, and 160 g ha(-1)). After 90 days, the plants were harvested and an extract was produced by maceration of leaves and stems of these plants. It was applied to pots containing washed sand, comprising a bioassay in a growth chamber using soybean as a bioindicator for picloram. Soil and plant samples were analyzed by HPLC. The results showed the presence of picloram or metabolites with herbicidal activity in the shoots of E. coracana and P. maximum at phytotoxic levels with regard to soybean plants, indicating that they work only as phytoextractors and that the presence of straw on the soil surface can promote recontamination within the area. It is not recommended to cultivate species susceptible to picloram in areas where it was reported remediation by E. indica and P. maximum and still present residues of these species.
- Subjects :
- Environmental remediation
Picloram
Plant Science
Biology
Eleusine
Panicum
complex mixtures
chemistry.chemical_compound
Environmental Chemistry
Soil Pollutants
Environmental Restoration and Remediation
Plant Stems
Herbicides
fungi
food and beverages
Straw
biology.organism_classification
Pollution
Phytoremediation
Biodegradation, Environmental
Agronomy
chemistry
Shoot
Soil water
Subjects
Details
- ISSN :
- 15226514
- Volume :
- 17
- Issue :
- 1-6
- Database :
- OpenAIRE
- Journal :
- International journal of phytoremediation
- Accession number :
- edsair.doi.dedup.....ec87dcfeaceef8c799f9c47c90b242ae