Growth Enhancement of Phragmites australis, Eichhornia crassipes and Saccharum officinarum for Rhizoremediation of Crude Oil

  • Monday Ubogu Department of Microbiology, Federal University of Agriculture Makurdi
  • Lucky O. Odokuma Department of Microbiology, University of Port Harcourt
  • Ejiro Akponah Department of Microbiology, Delta State University, Abraka
Keywords: Crude oil, Rhizoremediation, P. australis, E. crassipes, S. officinarum, Fertilizer, Microorganisms, Contaminated soils

Abstract

P. australis, E. crassipes (in mangrove swamp) and S. officinarum (in rainforest) are capable of tolerating some levels of crude oil in soil. However, some important growth characteristics such speedy growths, extensive root system and increased biomass desirable for efficient rhizoremediation are depressed. To cushion this suppressive effects, plants were subjected to the following treatments: Plant + Soil (PS) (Control); Plant + Soil + Oil (PSO); Plant + Soil + Oil + Fertilizer (PSOF); Plant +Soil + Oil + Fertilizer + Microorganisms (PSOFM); and Plant + Soil + Fertilizer + Microorganisms + Solarization (PSOFMS). Treatments were monitored for 120 days to determine their effects on the following growth parameters: Germination, germination percentage, height, and root length, dry weight, and leaf area. Results indicated that treatments PSOF, PSOFM and PSOFMS enhanced all growth parameters over contaminated untreated soil (PSO) with the exception of germination in P. australis and S. officinarum; while root length, leaf area in E. crassipes were statistically the same for PS, PSO, PSOFM and PSOFMS (P ˂ 0.05). Overall, growth enhancement efficiencies of the applied treatments were in the order: PSOFM ˃ PSOF ˃ PSOFMS. Thus, growth of these plants can be enhanced in crude oil contaminated soil by the above treatments for efficient rhizoremediation.

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Abstract
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PDF
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Published
2018-10-12
How to Cite
Ubogu, M., Odokuma, L. O., & Akponah, E. (2018). Growth Enhancement of Phragmites australis, Eichhornia crassipes and Saccharum officinarum for Rhizoremediation of Crude Oil. International Journal of Environment, 7(1), 60-84. https://doi.org/10.3126/ije.v7i1.21317
Section
Research Article