Research Article of American Journal of Agricultural Research
Influence of Contamination of Soil With Heavy Metal on the Growth of Three Herbaceous Plant Species
1C.E., Igwe, 2J.N., Azorji and 2S.K., Iheagwam
1Department of Forestry and Environmental Management, Michael Okpara University of Agriculture, Umudike, Nigeria
2Department of Biological Sciences, Hezekiah University, Umudi, P.M.B 3002 Ishiala Umudi, Imo State, Nigeria.
Contemporary literatures are awash with Heavy metal contamination in soils as a source of global environmental concern. Cultivation of crops on these contaminated soils may result in accumulation of heavy metals resulting in possible risks on human health. For this reason, a pot experiment was conducted between May and August 2016 at the green house of the Department of Forestry and Environmental Management, Michael Okpara University of Agriculture, Umudike. The experiment was specifically aimed at evaluating the influence of kaoline mined soil samples on the growth of three herbaceous plant species (Chromolaena odorata, Ipomoea involucrata and Mariscus alternifolius) commonly found at abandoned kaolin mining site at Ohiya in Umuahia South East, Nigeria. The experiment was laid out in a Randomized Complete Block Design with Six (6) replicates. Data were collected on Plant height, Number of leaves, fresh and dry weight. Data were analyzed using Analysis of Variance (ANOVA). Mean separations were done using Fisher LSD at 0.05% probability. Two mean values were subjected to studentized-t-test using statistical analytical system (SAS) software, version 8.0. The result showed that the kaolin mined soil sample significantly affected all the growth parameters measured during the study.
Keywords: Soil, Heavy metals, herbaceous plants.