Journal
BRAZILIAN ARCHIVES OF BIOLOGY AND TECHNOLOGY
Volume 55, Issue 1, Pages 145-149Publisher
INST TECNOLOGIA PARANA
DOI: 10.1590/S1516-89132012000100018
Keywords
Velpar K (R); herbicide; bioremediation; effective microorganisms
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This work assessed the bioremediation of herbicide Velpar K (R), in vitro in aqueous solution, used against weeds in sugar cane in Sao Paulo state. The herbicide contained Hexazinone and Diuron. It was used the microbial inoculant denominated Effective Microorganisms (EM-4), pool of microorganisms from soil that contained lactic and photosynthetic bacteria, fungi, yeasts and actinomycetes for bioremediation. Results for the depth of cultivation on agar-agar inoculated with EM-4 showed the microorganisms growth in the concentrations between 0.2% and 1.0% of the Velpar K (R) in the gel. The analysis of high performance liquid chromatography ( HPLC) showed that the EM-4 was effective for the bioremediation of the herbicide, which reached the values of 80% for diuron and 70% for hexazinone after 21 days in solution of 2:1 of Velpar K (R)/EM-4 ratio. These results could be useful for planning the bioremediation of contaminated areas with Velpar K (R).
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