6. REFERENCES
1. Etukudo, M.M., Nwaukwu, I.A., and Habila, S. The effect of sawdust and goatdung supplements on growth and yield of Okro (Abelmoschus esculentus L. Moench)
in diesel oil contaminated soil. Journal of Research in Forestry, Wildlife and Environment. 2011; 3(2): 92 - 98.
2. Adedokun, O.M., and Ataga, A.E. Effects of amendments and bioaugmentation of soils polluted with crude oil, automotive gasoline oil and spent engine oil on the
growth of cowpea (Vigna unguiculata L. Walp). Scientific Research and Essay. 2007; 2: 147- 149.
3. Onuh, M.O., Madukwe, D.K., and Ohia, G.U. Effects of poultry manure and cowdung on the physical and chemical properties of crude oil polluted soil. Science
World Journal. 2008; 3(2): 45-50.
4. Okonwu, K., Amakiri, J.O., Etukudo, M. M., Osim, S. E., and Mofunanaya, A.A.J. Performance of maize (Zea mays L.) in crude Oil treatment. Global Journal of
Pure and Applied Sciences. 2010; 16(2): 173-176.
5. Wang, Q., Cui, Y., and Dong, Y. Phytoremediation of polluted waters potential and prospects of wetland plants. Acta Biotechnology. 2008; 22(1-2):199-208.
6. Nabulo, G., Origa, O.H., Nasinyama, G.W., and Cole, D. Assessment of Zn, Cu, Pb and Ni contamination in wetland sois and plants in the Lake Victoria basin.
International Journal of Environmental Science and Technology. 2008; 5(1): 65-74.
7. Bruijnzeel, A.T. Mining processes and effects on the Environment. Nature and Science. 2004; 4: 16-20.
8. Kumar, S., Dagnoko, S., Haougui, A., Ratnadass, A., Pasternak, D., and Kouame C. Okra (Abelmoschus spp.) in West and Central Africa: Potential and progress on
its improvement. African Journal of Agricultural Research. 2010; 5(25): 3590-3598,
9. Udoh, D.J., Ndon, B.A., Asuquo, P.E., Ndaeyo, N.U., Crop production techniques for tropics. Concept Publication Limited, Nigeria. 2005; 243- 247.
10. Dhankhar, B.S., and Singh R. Okra Handbook: Global production, processing, and crop improvement. HNB Publishing. 2009. search. Accessed September 29,
2014. Available on: www.agronomy.org>publications>booksreviews>
11. Nwachukwu, E. O., and Osuji, J.O. Bioremedial Degradation of Some Herbicides by Indigenous White Rot Fungus, Lentinus subnudus. Journal of
Plant Sciences. 2007; 2:619-624.
12. George-Okafor, U., Tasie, F., and Mustoe- Okafor, F. Hydrocarbon Degradation Potentials of indigenous fungal isolates from petroleum contaminated soils.
Journal of Physical and Natural Sciences. 2009; 3(1): 1-6
13. Batelle, C.D. Mushrooms: Higher Macro fungi to clean up the environment. Batelle Environment Issues. 2000.
14. Herbert, S.O. Effect of subtrates of spawn production on mycelial growth of Oyster mushroom species. Agriculture and Biology Journal of North America. 2010;
1(5): 817-820.
15. Fasidi, I.O. and Kadiri, M. Use of grains and agricultural waste for the cultivation of Lentinus subnudus in Nigeria. Rivista Biological Tropics. 1993; 41:411-415.
16. Purnomo, A.S., Mori, T., Kamei, I., Nishii, T., and Kondo, R. Application of mushroom waste medium from Pleurotus ostreatus for bioremediation of DDT-
contaminated soil. International Biodeterioration and Biodegradation. 2010; 64(5): 397-402.
17. Maclean, E.O. Aluminium. In: C. A. Black (ed). Methods of soil analysis. Part 2, Agro manograph 9, Second edition. American Society of Agronomy and Soil
Science of American.1982; 539-579.
18. Addis, W., and Abebaw, A. Determination of heavy metal concentration in soils used for cultivation of Allium sativum L. (garlic) in East Gojjam Zone, Amhara
Region. Ethiopia Cogent Chemistry. 2017; 3: 1-12.
19. Ob,i 1.U. Statistical Methods of Detecting Differences Between Treatment Means and Research Methodology Issues in Laboratory and Field Experiments. Nigeria:
AP Express Publishers Limited; 2002.
20. Baker, A.J.M., McGrath, S.P., and Reeves, R.D. Metal Hyper accumulator Plants. A Review of the Ecology and Physiology of a Biological Resource for
Phytoremediation of metal- polluted soils. In: Terry N, Banuelos G, Editors. Phytoremediation of Contaminated Soil and Water. Boca Raton: Lewis Publishers: 2000;
pp 85-108.
21. Banks, M.K., Schwah, P., Lui, B., Kulakow, P.K., Smith, I.S. and Kim, R. The effects of plants on the degradation and toxicity of petroleum contaminants in soil:
A field assessment. Advance Biochemical Engineering and Biotechnology. 2003; 78: 75- 96.
22. Pellet, M.D., Grunes, D.L., and Kochican, L.V. Organic acid exudation as an aluminum tolerance mechanism in Maize (Zea mays L.) Planta.1995; 196: 788-795.
23. Agbede, O.O. Understanding Soil and Plant Nutrition. Nigeria: Salmon Press and Co. Nigeria Ltd. 2009; 20-60.
24. Raskin, I., Nanda, P.B.A., Dushenkor, S. and Salt, D.E. Bioconcentration of heavy metals by plants. Current Opinion in Biotechnology.1994; 5(1): 285-290.
25. Udo, J.I., Etukudo, M.M., and Nwachukwu, E.O. Evaluation of five weedy species for potential phytoremediation of heavy metals in soil contaminated with crude
oil in soil contaminated with crude oil in the Nigerian Coastal Region. Nigerian Journal of Botany. 2013; 26 (2): 297-306
26. Turer, D.G., and Maynard, B.J. Heavy metal contamination in highway soils. Comparison of Corpus Christi, Texas and Cincinnati, Ohio shows organic matter is
key to mobility. Clean Technology Environment Policy. 2003; 4: 235- 245.
27. Inoni, O.E., Omotor, D.G., and Adun, F.N. The effect of oil spillage on crop yield and farm income in Delta State, Nigeria. Central European Journal of
Agriculture. 2006; 7(1): 41-48.
28. Oudot, J. Selective migration of low and medium molecular weight hydrocarbons in petroleum contaminated terrestrial environment. Oil and Chemical Pollution.
1990; 6: 251-261.