Study of the biochemical activity and plant growth promoting bacteria in soils polluted with oxyfluorfen

There is currently a great deal of information available about the toxic effects oxyfluorfen on soil biochemical activity and microbial biodiversity. However, there no how this herbicide affects plant growth promoting bacteria (PGPB) or their properties, such as biofilm formation, nitrogen fixation, siderophore auxin production, phosphate solubilisation. As in study an agricultural was polluted with every 30 days at dose 4 L ha−1 for total period 90 days. During experimental period, dehydrogenase determined, count isolation cultivable performed, PGPB properties were characterized. The results indicated that inhibits activity, inhibition increasing concentration (69.9% compared to non-polluted soil). It also causes changes population diversity soils. Regard evolution isolated PGPB, it found induces nitrogen-fixing, biofilm-forming, siderophore-producing bacteria, while negatively affecting auxin-producing phosphate-solubilising bacteria. These suggest modulates concentration-dependent manner.