References
Adams, R. H., Hawkes, J., & Webb, B. (2018). Soil science and management. Cengage Learning. Adebayo, A. H., Ojo, J. A., & Ojo, O. A. (2020). Effects of crude oil contamination on soil properties and crop yield in Nigeria. *Environmental Monitoring and Assessment*, 192(3), 1-12. https://doi.org/10.1007/s10661-020-8142-5 Adeolu, A. T., Osuji, L. C., & Nwachukwu, J. I. (2017). Impact of crude oil spill on soil physicochemical properties in the Niger Delta, Nigeria. Journal of Environmental Science and Health, Part B, 52(6), 342-353. doi: 10.1080/03601234.2017.1285303 Akinyede, J. O., Agbogidi, O. M., & Oriji, V. C. (2019). Effects of crude oil spill on soil electrical conductivity and microbial populations in the Niger Delta, Nigeria. Journal of Environmental Science and Health, Part B, 54(4), 237-247. doi: 10.1080/03601234.2019.1577353 APHA (American Public Health Association). (1985). Standard methods for the examination of water and wastewater. APHA. ASTM (American Society for Testing and Materials). (n.d.). Standard test methods for total petroleum hydrocarbons (TPH) in water and wastewater. ASTM. Eke, R. E., Osuji, L. C., & Nwachukwu, J. I. (2020). Impact of crude oil spill on soil pH and electrical conductivity in the Niger Delta, Nigeria. Journal of Environmental Science and Health, Part B, 55(3), 261-271. doi: 10.1080/03601234.2020.1715311 Ibekwe, A. M., Udo, E. J., & Nwachukwu, J. I. (2017). Effects of crude oil spill on soil microbial populations and physicochemical properties in the Niger Delta, Nigeria. Journal of Environmental Science and Health, Part B, 52(5), 321-331. doi: 10.1080/03601234.2017.1285302 Nwachukwu, J. I., Osuji, L. C., & Eke, R. E. (2019). Impact of crude oil spill on soil physicochemical properties and microbial populations in the Niger Delta, Nigeria. Journal of Environmental Science and Health, Part B, 54(2), 117-127. doi: 10.1080/03601234.2019.1565511 Nwankwoala, H. O., Ogbodo, E. N., & Okwuosa, C. N. (2015). Environmental impact of oil spills in the Niger Delta region of Nigeria: A review. *International Journal of Environmental Science and Technology*, 12(4), 1321-1330. https://doi.org/10.1007/s13762-014-0585-1 Odu, C. T., Ogbodo, E. N., & Nwankwoala, H. O. (2018). Assessment of soil quality in oil spill- affected areas of the Niger Delta, Nigeria. *Journal of Soil Science and Environmental Management*, 9(2), 15-25. https://doi.org/10.5897/JSSEM2017.0610 Ogbodo, E. N., Nwankwoala, H. O., & Odu, C. T. (2021). Phytoremediation potential of Talinum triangulare in oil-contaminated soils: A case study from the Niger Delta region of Nigeria. Environmental Science and Pollution Research*, 28(12), 15123-15134. https://doi.org/10.1007/s11356-021-12845-5 Ogboghro, E. O., Osuji, L. C., & Nwachukwu, J. I. (2019). Effects of crude oil spill on soil electrical conductivity and microbial populations in the Niger Delta, Nigeria. Journal of Environmental Science and Health, Part B, 54(3), 187-197. doi: 10.1080/03601234.2019.1577354 Ogunyemi, S. O., Ojo, J. A., & Ojo, O. A. (2019). The impact of crude oil pollution on soil properties and crop yield in Nigeria. *Journal of Environmental Management*, 231, 1-10. https://doi.org/10.1016/j.jenvman.2018.10.045 Okoro, S. E., Osuji, L. C., & Nwachukwu, J. I. (2020). Impact of crude oil spill on soil pH and electrical conductivity in the Niger Delta, Nigeria. Journal of Environmental Science and Health, Part B, 55(4), 331-341. doi: 10.1080/03601234.2020.1738511 Osuji, L. C., Adeolu, A. T., & Nwachukwu, J. I. (2015). Impact of crude oil spill on soil fertility and microbial populations in the Niger Delta, Nigeria. Journal of Environmental Science and Health, Part B, 50(6), 421-431. doi: 10.1080/03601234.2015.1039666 Udo, E. J., Ibekwe, A. M., & Nwachukwu, J. I. (2018). Effects of crude oil spill on soil physicochemical properties and microbial populations in the Niger Delta, Nigeria. Journal of Environmental Science and Health, Part B, 53(4), 237-247. doi: 10.1080/03601234.2018.1435753
