CHARACTERIZATION OF PHYTOREMEDIATION TECHNOLOGY BY RHIZOSPHERE MICROORGANISM

The goal of the experiment was to characterize the efficiency of phytoremediation technologies by quantifying the major groups of rhizosphere microorganisms. An integrated phytoremediation experiment including physical, chemical and biological treatments was developed on a mine waste. Three parcels were established: 1. mine waste; 2. mine waste plus fly ash; 3. mine waste plus fly ash plus lime. To determine the number of heterotrophic bacteria and microscopic fungi plate count method was used. Two tailed correlation analysis between soil chemical and microbiological properties was studied. The shoot dry weight of plants was risen several times as a result of integrated phytoremediation treatments. Our results indicated the relationship between plant shoot dry weight and CFU number of rhizosphere microbes. Modifying the physical and chemical characteristics of mine waste had a positive effect on the quantity of rhizosphere microorganisms. It was concluded, that rhizosphere microorganisms, as mediators in plant soil interactions, indirectly could indicate the efficicncy of phytoremediation technologies.