EARTHWORMS TO IMPROVE GLYPHOSATE DEGRADATION IN BIOBEDS

LESCANO, MAIA; MASÍN, CAROLINA; RODRÍGUEZ, A.R.; GODOY, J.L.; ZALAZAR, CRISTINA

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH

SPRINGER HEIDELBERG

Lugar: HEIDELBERG; Año: 2020

0944-1344

In this work, earthworms effect on the efficiency of biobeds for glyphosate degradationwas studied. Three biomixtures were evaluated with and without the addition ofearthworms ( Eisenia fetida species). Glyphosate initial concentracion was 1000mg/kg biomixture. Glyphosate and biological parameters were measured as a functionof time. Earthworms survival, biomass and reproduction were evaluated as well. Allbiomixtures that contains earthworms reached 90% of glyphosate degradation at 90days in comparison with the biomixtures without earthworms that reached 80%approximately at the same time. Also, within the biomixtures that containedearthworms glyphosate degradation rate was significantly higher in the one made upwith soil and wheat stubble (Ws-E) showing excellent capacity foraminomethylphosphonic acid (AMPA) degradation, main metabolite of glyphosatedegradation. In addition, a study performed after the vermiremediation process showedthat E. fetida can tolerate high glyphosate concentration without modifications in itslife traits. It can be concluded that the use of E. fetida within the biobeds is anexcellent combination to improve glyphosate and AMPA removal.