In order to examine the survival and performance of Bolusanthes speciosus on metalliferous soil found along the Great Dyke of Zimbabwe, we conducted an ex situ experiment by transplanting four months old seedlings of the species into a chrome rich soil packed in black polythene bags in a green house at Midlands State University agriculture farm. The experiment consisted of a total of sixteen plants layered into four rows and four columns in conformity to a Randomized Complete Block Design (RCBD) for Analysis of Variance (ANOVA) with four treatments replicated five times. The plants were managed under three fertilizer regimes of 5 g each of Ammonium Nitrate (NH4NO3); Nitrogen-Phosphorus-Potassium (NPK) Compound 8:14:7 (Compound D) and Gypsum (CaSO4) with a control. Data for survival, plant height, basal circumference and growth rates were then collated over a period of 16 weeks and then analyzed using ANOVA. The results showed 100 % survival rates with all fertilizer management regimes and higher performance and growth rates without fertilizer management at least in the first couple of weeks. There was no significant difference in plant response to management with NH4NO3 and CaSO4 fertilizers at P < 0.05 but afterwards, an increase in significant difference appeared to be trendy. We concluded that Bolusanthes speciosus was a promising native reclamation species on disused chrome mine dumps and pits. Good establishment of this species could be enhanced through application of appropriate fertilizers.
Keywords: Phytoremediation, Bolusanthes speciosus, chrome mine dumps, metalliferous soils,