Evaluation of growth indices of Telfairia occidentalis Hook and physiological properties of soil containing crude oil and Mucuna pruriens manure treatment

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Abstract

The soil physico-chemical properties and responses of Telfairia occidentalis Hook to crude oil polluted soil amended with compost of Mucuna pruriens were investigated using the following treatment: 0-control (soil only), pollution treatment- soil + 120ml crude oil, and remediation treatment- 0.5kg M. pruriens + 120ml crude oil + soil, 1.0kg M. pruriens + 120ml crude oil + soil, 1.5kg M. pruriens + 120ml crude oil + soil, and 2.0kg M. pruriens + 100ml crude oil + soil. Experiment was conducted using perforated polythene bags, and. three (3) seeds of T. occidentalis were maintained in each polythene bag based on treatment. Chemical properties of experimental soils were examined before and after harvest. There were significant (P< 0.05) reductions in phosphorus and nitrogen contents of contaminated soils relative to the control (unpolluted soil).The plant height, root length, leaf number and moisture contents of the test crop showed significant (P < 0.05) reductions in contaminated soils relative to unpolluted treatment. The addition of organic manure from M. pruriens ameliorated the adverse effects of crude oil pollution, although, the crop growth parameters were comparatively lower than those of the control (unpolluted soil). This study suggests that compost generated from M. pruriens can remediate the adverse effects of crude oil pollution by improving the soil physico- chemical properties as well as create favourable conditions and supply the needed nutrients for growth and development of the test cropthe palm oil mill effluent been relatively more effective than rubber sludge

Keywords: Telfairia occidentalis, Crude Oil, Contaminated Soil, Mucuna pruriens ,

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