Mbong, G. AFadina, O.OFocho, B. A,Azo, W. MSeino, R. A.2023-05-242023-05-2420021596-7492ui_art_mbong_effect_2002Journal of Tropical Forest Resources, 16(1) 2000 pp 173-182http://ir.library.ui.edu.ng/handle/123456789/8177The effects of spent lubricating oil on the growth of two varieties of soybean (TG x 1485-ID; (V1)) and (TG x 1448-2E; (V2)) were investigated in the laboratory and greenhouse experiments. In all the plants treated with spent lubricating oil, germination was delayed when compared with the Controls. Also results from growth parameters such as stem height/plant, number of leaves/plants, - number of nodes/plants and number of branches/plant indicated that spent lubricating oil had some adverse effects on the growth of soybeans. However, V1 seems to be more tolerant to contamination by spent lubricating oil in terms of growth indices than V2, which suffered most. Generally, while V2 produced a net higher dry pod weight/plant, V1 produced less dry weight/plant. It was generally observed in the study that with increasing level of oil contamination, the toxicity of the oil was more pronounceden-USSpent lubricating oilGrowth parametersSoybeansPollutionArticle