Assessment of selected tree species as phytoremediation agents in polluted soils.

Abstract\nNOVELTY STATEMENT\nSIGNIFICANCE OF THE STUDYThe study investigates the ability of selected tree species to absorb heavy metals (Pb, Ni, Zn) from polluted soils. Seedlings of Adansonia digitata (P1), Jatropha curcas (P2), and Hildegardia barteri (P3) were transplanted into polythene pots with soils from a dumpsite (T1), highway (T2), industrial area (T3), and farmland (T4), forming a 3x4 factorial experiment replicated five times in a Completely Randomized Block Design. Pre-sowing analysis showed T1 and T2 had the highest Pb and Zn concentrations, T3 had the highest Ni, and T4 had the lowest heavy metal concentrations. After 12 weeks, heavy metal concentrations decreased in all soils. P1 concentrated metals in the root, P2 in the shoot, and P3 in various plant parts, with significant differences between species. P2 was identified as an effective phytoextractor for Pb and Zn (TF > 1), and P3 for Ni. All species showed potential for phytostabilization. The study concludes that these species are viable options for phytoremediation of heavy metals in contaminated soils.The study examines the effectiveness of indigenous tree species in phytoremediation, highlighting the importance of using species adapted to local ecosystems for successful land restoration.The study provides essential data for environmental restoration, highlighting sustainable, eco-friendly approaches to soil remediation. These findings have direct implications for policy-making and land management in polluted regions. [ABSTRACT FROM AUTHOR]