Abstract

The contamination of soil with used engine oil poses significant environmental challenges, affecting soil quality and plant growth. The main aim of this study was to investigate the impact of varying concentrations of used engine oil on the physicochemical properties of soil, as well as its effect on the early establishment and germination rate of pepper (Capsicum spp.) plants. Pepper seeds were sown in soils treated with different levels of used engine oil (0 ml, 100 ml, 150 ml, 200 ml, 250 ml, 300 ml). The emergence rate, seedling height, stem width, and number of leaves were monitored over two weeks. Additionally, the physicochemical properties of both contaminated and uncontaminated soils were analyzed, for pH, organic carbon content, and nutrient levels Phosphorus, Magnesium, Potassium and Sodium. Seed emergence and growth parameters were significantly affected by oil contamination......................................................................