Effects of NPK Fertiliser (15-15-15) on the Growth Performance of Three Arable Crops Grown on Degraded Kaolin Mined Soil in Abia State, Southeast Nigeria

Igwe, C. E.; Azorji, J. N.; Nwachukwu, M. O.

doi:10.9734/asrj/2019/v2i330052

Cited by 1 publication

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“…The soil pH of most spill sites fail within the range, suitable for plant growth, although the nitrogen level of such soil is usually low [31]. There is considerable potential for increasing world food supply by reclaiming polluted lands with organic amendment in lowproduction countries [32]. Hence, this research was carried out to ascertain the influence of spent engine oil pollution and organic amendment on soil physicochemical properties, microbial population and growth of C. annuum (L.).…”

Section: Introductionmentioning

confidence: 99%

Influence of Spent Engine Oil Pollution and Organic Amendment on Soil Physicochemical Properties, Microbial Population and Growth of Capsicum annuum (L.)

Nwachukwu

Azorji²,

Adjero

et al. 2020

ASRJ

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This study investigated the impacts of spent engine oil on the physicochemical properties of soil, soil's microbial population and growth of Capsicum annuum. It covered assessment of different levels of contamination (0, 20, 40, 60 and 80%) in soil; which represents the degree of oil spillage concentration on the growth performance of C. annuum investigated. Percentage germination, seedling height, number of leaves and number of branches decreased as the concentrations of the spent engine oil in soil samples increased and affected soil physicochemical properties. The screening experiment conducted showed that poultry manure improved the physicochemical properties of sandy loam soils contaminated engine oil. The effects of poultry manure as an organic amendment was assessed using pepper (C. annuum) as test crop. All amendment made significant increase in soil organic carbon and calcium content over the polluted soils. Soil acidity increased, soil exchangeable ions decreased. N, P and K were altered in the polluted soils as compared to the controls. There were increased bacterial counts (2.21 – 2.85) and a decrease in fungi population (0.48 - 0.59) in the spent engine oil-contaminated soils compared with the control. The oil reduced germination percentage, depressed growth, reduction in leaf number and plant height of the C. annuum. Therefore the spent engine oil clearly had detrimental effects on soil's physicochemical and biological properties. The oil contributed largely to the extreme acidic nature of the polluted soils. However, maximum increase in plant height, germination percentage, number of leaves and branches were recorded with amendment of the polluted soils with poultry manure. Results show the considerable potential of remediation protocols with poultry manure as a remediating agent for oil spill remediation in the soil samples.

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Section: Introductionmentioning

confidence: 99%