Research Article

Growth Performance of Cowpea in Spent Oil-Contaminated Soils Ameliorated with Cocoa Shell Powder and Biochar

Volume: 12 Number: 36 December 31, 2018
Stephen Oyedeji *, David Adedayo Animasaun , Oluwatosin Ife Ademola , Oludare Oladipo Agboola

Growth Performance of Cowpea in Spent Oil-Contaminated Soils Ameliorated with Cocoa Shell Powder and Biochar

Abstract

The study assessed the ameliorative potentials of cocoa shell powder and biochar on spent engine oil (SEO) soils using the growth performance of cowpea. Twenty-four polyethylene bags were set up consisting of seven treatments (T1 to T7) contaminated with 2% v/w SEO and control (T0) each replicated three times. Cocoa shell biochar (CSB) was applied to T2, T3 and T4 at rates 0.25%, 0.5% and 1.0% while uncharred cocoa shell powder (CSP) was incorporated into T5, T6 and T7 at rates 0.25%, 0.5% and 1.0%. Chemical properties of CSB, CSP and soil treatments were determined by standard methods. Cowpea seeds were sown and germination and growth parameters were determined at 3 and 6 weeks after sowing. The result showed CSB was alkaline and rich in exchangeable cations. SEO-contamination negatively impacted soil nutrient composition, weakened germination by 27% and negatively affected growth of cowpea. Plants in T0 had significantly highest growth and biomass. CPB (especially 1%) amendment significantly improved leaf initiation and area compared with plants in T1. Growth declined with increasing CSP amendment. In conclusion, conversion of cocoa shells to biochar is necessary eliminate the acidic effects of the raw cocoa shell and effectively condition the soil.

Keywords

Contaminants, Cowpea, Engine oil, Growth, Soil amendment, Soil nutrient

References

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APA
Oyedeji, S., Animasaun, D. A., Ademola, O. I., & Agboola, O. O. (2018). Growth Performance of Cowpea in Spent Oil-Contaminated Soils Ameliorated with Cocoa Shell Powder and Biochar. Journal of Biological and Environmental Sciences, 12(36), 105-112. https://izlik.org/JA48MS89EJ
AMA
1.Oyedeji S, Animasaun DA, Ademola OI, Agboola OO. Growth Performance of Cowpea in Spent Oil-Contaminated Soils Ameliorated with Cocoa Shell Powder and Biochar. JBES. 2018;12(36):105-112. https://izlik.org/JA48MS89EJ
Chicago
Oyedeji, Stephen, David Adedayo Animasaun, Oluwatosin Ife Ademola, and Oludare Oladipo Agboola. 2018. “Growth Performance of Cowpea in Spent Oil-Contaminated Soils Ameliorated With Cocoa Shell Powder and Biochar”. Journal of Biological and Environmental Sciences 12 (36): 105-12. https://izlik.org/JA48MS89EJ.
EndNote
Oyedeji S, Animasaun DA, Ademola OI, Agboola OO (December 1, 2018) Growth Performance of Cowpea in Spent Oil-Contaminated Soils Ameliorated with Cocoa Shell Powder and Biochar. Journal of Biological and Environmental Sciences 12 36 105–112.
IEEE
[1]S. Oyedeji, D. A. Animasaun, O. I. Ademola, and O. O. Agboola, “Growth Performance of Cowpea in Spent Oil-Contaminated Soils Ameliorated with Cocoa Shell Powder and Biochar”, JBES, vol. 12, no. 36, pp. 105–112, Dec. 2018, [Online]. Available: https://izlik.org/JA48MS89EJ
ISNAD
Oyedeji, Stephen - Animasaun, David Adedayo - Ademola, Oluwatosin Ife - Agboola, Oludare Oladipo. “Growth Performance of Cowpea in Spent Oil-Contaminated Soils Ameliorated With Cocoa Shell Powder and Biochar”. Journal of Biological and Environmental Sciences 12/36 (December 1, 2018): 105-112. https://izlik.org/JA48MS89EJ.
JAMA
1.Oyedeji S, Animasaun DA, Ademola OI, Agboola OO. Growth Performance of Cowpea in Spent Oil-Contaminated Soils Ameliorated with Cocoa Shell Powder and Biochar. JBES. 2018;12:105–112.
MLA
Oyedeji, Stephen, et al. “Growth Performance of Cowpea in Spent Oil-Contaminated Soils Ameliorated With Cocoa Shell Powder and Biochar”. Journal of Biological and Environmental Sciences, vol. 12, no. 36, Dec. 2018, pp. 105-12, https://izlik.org/JA48MS89EJ.
Vancouver
1.Stephen Oyedeji, David Adedayo Animasaun, Oluwatosin Ife Ademola, Oludare Oladipo Agboola. Growth Performance of Cowpea in Spent Oil-Contaminated Soils Ameliorated with Cocoa Shell Powder and Biochar. JBES [Internet]. 2018 Dec. 1;12(36):105-12. Available from: https://izlik.org/JA48MS89EJ