Performance of irrigated maize in a crude-oil polluted soil remediated by three nutrients in Nigeria's Niger Delta

Fubara-Manuel, I; Igoni, A. H.; Jumbo, Raphael

Abstract

An in-situ simulated crude-oil polluted soil was remediated for 8 weeks by three different nutrients, and then used to plant maize (Farz 26) with a growth period of 14 weeks, with an irrigation depth of 4mm/day. Remediation consisted of the application of 16.667, 22.222, and 27.778 t/ha of NPK (15:15:15) fertilizer, spent mushroom substrate (SMS), and pig slurry (PS) to the polluted soil, laid out in randomized complete block design, with three replications, including a control that was neither polluted nor treated. Physico-chemical and microbial properties of the soil before and during remediation, and growth parameters of the maize were determined. Results indicated that 8 weeks after remediation, 27.778 t/ha of NPK, PS, and SMS reduced total hydrocarbon content (THC) by 87.3, 91.2, and 88.6% respectively. For maize, 14 weeks after planting resulted in a yield of 1.11, 1.20, and 1.17 t/ha from the soil remediated by 27.778 t/ha of NPK, PS, and SMS respectively, while the control yielded 2.58 t/ha. The difference in yields between the control and the remediated soils was significant at 5% level. The result indicated a 53.5% reduction in yield mainly due to the non-restoration of the soil to its original status.

• Journal Article Type: Article
• Acceptance Date: Dec 16, 2017
• Online Publication Date: Dec 29, 2017
• Publication Date: 2017
• Deposit Date: May 16, 2024
• Publicly Available Date: May 17, 2024
• Journal: American Journal of Engineering Research (AJER)
• Print ISSN: 2320-0936
• Electronic ISSN: 2320-0847
• Peer Reviewed: Peer Reviewed
• Volume: 6
• Issue: 12
• Pages: 180-185
• Series ISSN: 2320-0847
• Keywords: Crude -oil; maize; pollution; remediation; yield
• Public URL: https://uwe-repository.worktribe.com/output/11997336