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Research Journal of Environmental Toxicology

Year: 2007 | Volume: 1 | Issue: 3 | Page No.: 116-123
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Authors

O.M. Agbogidi

P.G. Eruotor

S.O. Akparobi

Keywords

Research Article

Effects of Time of Application of Crude Oil to Soil on the Growth of Maize (Zea mays L.)

O.M. Agbogidi, P.G. Eruotor and S.O. Akparobi
Field experiments were conducted at the Delta State University, Asaba Campus Teaching and Research Farm and at Delta State Polytechnic, Ozoro during the 2003 and 2004 cropping seasons to evaluate the effects of time of application of crude oil to soil on the growth of seven maize varieties viz., composite suwam 1, Hybrid 3x-yx, AMATZBR w, TZBRSYN w, AMATZBR y, TZBRSYN y and Ozoro local. 0, 5.2, 10.4, 20.8 and 41.6 mL of the oil per stand of maize served as the treatments. The experiment was laid out in a split-split-plot design with four replications. Results obtained showed that soil treatment with crude oil at four Weeks after Planting (4 WAP) died within 24 h while the plants without crude oil treatment remained intact. At 6 WAP, only the maize varieties subjected to 41.6 mL of the oil withered while composite (suwan 1), Hybrid 3x-yx and the Ozoro local withered and died on exposure to 20.8 mL of the oil. No significant differences (p≥0.05) were observed in the plants height, leaf area and stem diameter of the maize varieties tested at 8 WAP. This study has shown that the time of application of crude oil to soil has a significant effect on the growth of maize.
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