Removal of Pb and Zn from Soil using cowpea (Vigna unguiculata) and maize (Zea mays) Plants
Date
2018-03-12
Authors
Oladele, E.O
Taiwo, I.A.
Adewumi, O.O
Odeigah, P.G.C.
Journal Title
Journal ISSN
Volume Title
Publisher
Journal of Applied Science and Environmental Management
Abstract
This study investigated the potential of cowpea (Vigna unguiculata) and maize (Zea mays) plants to remove Pb and Zn from soil. The crops were exposed to three concentrations (100, 150 and 200 mgkg-1) of each metal salts during the study. When the plants were treated with lead nitrate at a concentration of 150 mgkg-1, the amount and percentage of Pb removed and accumulated within plants’ tissues were 65.68 m mgkg-1g/kg (44.79%) and 78.93 mgkg-1 (53.0%) for cowpea and maize with bioconcentration factors 0.80 and 0.78 respectively. However, when the plants were assisted they had greater bioconcentration factors. Farmyard manure enhanced metal uptake by cowpea and maize significantly than EDTA. Maize extracted more Pb into its roots and translocated to shoots when assisted with EDTA than cowpea. Maize was able to translocate more Pb while cowpea translocated more Zn through the vascular system, thereby acting as phytoextractors for the different metals respectively.
Description
Staff publications
Keywords
Chelate , Translocation factor , Bioconcentration factor , Phtoextraction , Research Subject Categories::NATURAL SCIENCES
Citation
Oladele, E.O., Adewumi, O.O, Taiwo, I.A. and Odeigah, P.G.C. (2018). Removal of Pb and Zn from Soil using cowpea (Vigna unguiculata) and maize (Zea mays) Plants. Journal of Applied Science and Environmental Management, Vol.22(3). 432-438pp.