Yield and quality of maize from spent engine oil contaminated soils amended with compost under screenhouse conditions

Abstract

The study investigated the effects of poultry manure compost (PMC) on the growth performance and yield of maize (Zea mays L.) when cultivated on spent engine oil (SEO) contaminated soil with a view to assessing its nutritional composition. The experiment consisted of three SEO treatments (0%, 1% and 2% w/w) with six levels (0, 2, 4, 6, 8 and 10 t ha-1) of PMC applications. Each treatment was replicated thrice and arranged in a 3 × 6 × 3 factorial completely randomized design to give a total of 54 pots. At full physiological maturity, maize grains were harvested and threshed manually for analysis. As the bioavailability of metals increased with increasing PMC, their uptake by maize plants was enhanced. The soil amended with 10 t ha-1 and contaminated with 1% SEO recorded the highest uptake rates of 1.761 × 10-2, 2.345 × 10-2 and 4.285 × 10-2 day-1 for Fe, Cu and Pb respectively. Also, the significantly (P<0.05) highest yield of maize (5.8 t ha-1) and the highest nutritional values of crude protein (11.27 g 100 g-1) and crude fibre (2.71 g 100 g-1) were obtained with zero SEO soil contamination at 10 t ha-1 PMC applications. There was evidence of yield and nutritional quality reduction of maize when cultivated on SEO contaminated soils with or without poultry compost fertilization

The Effect of Palm Kernel Oil (PKO) Biodiesel-Contaminated Soil on Morphological and Biochemical Properties of Zea mays

“…This could be due to difficulty in getting appropriate nutrient by the root of corn created by the biodiesel contamination. Reduced soil aeration due to thin film layer formation on the topsoil by the applied PKO biodiesel could have reduced the air passage through the soil pores, thereby leading to the inadequate air supply to the maize plants [19] and hence, reduction in the SPAD value and SPC. The artificial drought condition created by the PKO biodiesel may also be responsible for the increased lipid peroxidation products, MDA, of leaves of experimental corn.…”

“…The experiment was conducted in a screenhouse of the College of Science, Federal University of Petroleum Resources, Effurun, Nigeria. The method described by Adewole and Aboyeji [19] though slightly modified was used. Bulk surface soil samples (0-15 cm) were collected from an area in the University, air-dried for seven days, sieved using 2 mm sieve and analysed using standard methods.…”

Potentials of Sugarcane Bagasse and Poultry Manure in the Remediation of Spent Motor Oil Contaminated Soil

“…Poultry manure has similar biodegradability potential and is often used to improve soil fertility. Its efficacy in promoting plant growth in hydrocarbon polluted soils has also been reported [10]. This study is aimed at investigating the potential of sugarcane bagasse, poultry manure and their combination in the remediation of spent motor oil contaminated soil.…”