Abstract
The Glyphosate herbicide is used in brazilian agriculture. One way to evaluate the impacts from the herbicide on the environment is use seeds as organisms tests in toxicity assays. This study refer to an ecotoxicological concentrations evaluation from glyphosate agrochemical on Panicum miliaceum L.. In this research, it was used macro and micro nutrients under optimized conditions for develop seeds plant embryos. It was also used AGAR in the medium as a support material to help the seedling growth. The technique allowed to evaluate in the tests performed the chronic toxicity caused by agrochemical in period of 168 hours. In this test was used 50 Panicum miliaceum L. semeds in PET containers which were placed 25 mL of AGAR in the medium. Concentrations from 8,0 mg.L-1 Glyphosate showed chronic toxicity for the studied species. The analytical technique presented itself as a simple, safe and high sensitivity methodology for ecotoxicological evaluations. Key-words - Glyphosate, Chronic Toxicity, Panicum miliaceum L.
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