Chukwumati And Anozie


Chukwumati and Anozie

Greener Journal of
Agricultural Sciences

Vol. 11(2), pp. 126-132, 2021

ISSN: 2276-7770

Copyright ©2021, the copyright of this article is retained by
the author(s)








Assessment of
Chemical Properties of Soil under the Influence of Spent Motor Oil Remediated
with Vetiver Grass (Vetiveria zizanoides)
in South –South, Nigeria.



Chukwumati, J.A; Anozie, H.I



Department of Crop and Soil Science, Faculty of
Agriculture, University of Port Harcourt, PMB 5323, Port Harcourt, Nigeria.






Article No.: 061821057

Type: Research



The study investigated the
physicochemical properties of soil under the influence of spent engine oil
(SEO) on cultivated vetiver. Soil samples were sampled in mechanic workshops
located in 2 communities: Elikohia and Choba both in Rivers States of
Nigeria. Composite samples of spent oil contaminated soils were collected
randomly at a depth 0-15, 15-30, 30-45cm from the two sites respectively and
uncontaminated samples (control) at 100 meters away from the two sites with
spade. Ten (10kg) each of harmonized composite soil samples of contaminated
and no vetiver (ctm no vet), contaminated and remediated with vetiver (ctm +
vet) and control samples were placed into 10 litre perforated plastic
buckets. Two splits of vetiver plant were transplanted per plastic bucket. At
the end of three months, soil samples were collected and analysed for physicochemical
properties.  Results of the study
revealed that contamination of the soil with spent engine oil significantly
(P<0.05) increased the soil total organic carbon, total nitrogen and the
electrical conductivity of the soil compared to control in all the soil
depths investigated, while a decrease in concentration were observed in
available phosphorus and exchangeable cations (Ca, Mg and K) in contaminated
over control samples. There was consistent decrease in concentration of total
organic carbon, cation exchangeable bases available phosphorus and total
nitrogen along the soil profile depth. Cultivation of vetiver plant (Vetiveria zizanioides) significantly
increased the concentration total nitrogen, available phosphorus, total
organic carbon and exchangeable cations and a reduction in electrical
conductivity of the soil in both sites (Choba and Elikohia) and along the
soil depths. There was no significant (P>0.05) difference between the
contaminated and control samples in both sites, however soil contaminated
with SEO were slightly higher in Elikohia than those of Choba. The soil pH
decreases with depth of soil profile. The study therefore showed that
cultivation of vetiver plant in spent engine oil contaminated soil improves
the fertility status of the soil.


Accepted:  22/06/2021

Published: 07/09/2021


*Corresponding Author

Chukwumati, J.A

E-mail: johnprint2005@

Phone: +23408063573269



Spent Engine Oil (SEO); vetiver; Soil properties; Elikohia;








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this Article:
Chukwumati, JA; Anozie, HI (2021). Assessment of
Chemical Properties of Soil under the Influence of Spent Motor Oil Remediated
with Vetiver Grass (Vetiveria zizanoides)
in South –South, Nigeria. Greener
Journal of Agricultural Sciences
11(2): 126-132.


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