Bio-accumulation of the metal elements traces by the radish (Raphanus sativus) cultivated on grounds amended by muds of a sewage treatment plant

This work consists under investigation of the effect of the spreading of the mud of the sewage treatment plant of the city of Beni Mellal in Morocco on the accumulation of certain elements metal traces (Pb, Cu, Ni, Zn and Cd) in a market gardening: the radish (Raphanus sativus). The results show that the mud contribution involves an increase in the accumulation of the metal elements traces in radish. This increase informs about the risks caused in the long run by the spreading of this waste. In addition, the accumulation of the metal elements traces by radish is influenced by the mud concentration (0, 10, 20, 30, 40 and 50%). This effect is variable according to metal, of the mud amount brought and the plant species.