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Heavy metals contamination indicates as one of the major threats to soil system. Technique of phytoremediation applied plants which are capable to transfer and accumulate metals into their tissues. In recent time it has been proposed that biofuel plants are more favorable for both remediation and utilization of polluted soil by metal. This study revealed heavy metals phytoremediation potential of guar plant in the framework of an experimental field. Plants were submitted to 10 treatments of T1: control (without fertilization), T2: compost town refuse (CTR, 10 m3.fed-1), T3: 50%NPK, T4: 50%NPK+CTR, T5: 75%NPK, T6: 75%NPK+CTR, T7: 100%NPK, T8: 100%NPK+CTR, T9: 125%NPK and T10: 125%NPK+CTR. Our results demonstrated that guar plant was able to tolerate Fe, Zn, Mn, Cu, Pb, Ni and Cr high concentrations, which set the plant capability to grow well in higher levels of heavy metals. Significant metal accumulation was observed in root along with reduced biomass for guar plant. Moreover, it could perhaps be used for phytostabilization, with success in marginally polluted soils where their growth would not be decline and decontamination of metals could be maintained at satisfying levels. However, translocation factor (TF) values suggested that guar plant is more efficient for phytoremediation at higher levels of heavy metals.

Transloeation of some Elements in Guar Plant (Cyamopsis tetragonoloba L.) as Affected by Npk-Fertilization and Compost of Town Refuse