Assessment Of Phytoextraction Potential Of Waltheria Indica In Crude Oil Contaminated Soil

ABSTRACT

The study was carried out on Assessment of Phytoextraction Potential of Waltheria Indica in Crude Oil Contaminated Soil from Obigbo Local Government Area of Rivers State, Nigeria. This was with the aim of determining the heavy metal contamination of the soil before and after planting as well as the quantity extracted by the plant from the soil. The plant was subjected to different treatments of: Nitrogen/Phosphorus/Potassium (NPK), Composted Market Waste (CMW), No Amendments (NA) and Control. The plants were harvested after 3 months and properly labelled and taken to the laboratory for analysis. Both soil and plants were analysed for heavy metals and physico-chernical properties (pH, particle size, OM, OC, P, Ni, Cd, Pb, Cu, Fe and Zn). Heavy metals were analysed using using Atomic Absorption Spectrophotometer (AAS). The data collected were subjected to One-way ANOVA at p