Abstract
A lot of used motor oil is drained into the soil annually. The possibility of establishing
impacts of used motor oil on soil properties and corn yield was studied with treatments
i.e. 0 (control), 0.5, 1.0, 1.5, 2.0% for screen house and 0 (control), 8.0, 16.0, 24.0,
32.0% for field in demonstration farm of Ebonyi State University, Nigeria. The
experiments were laid out using completely randomized design (CRD) and randomized
completely block design (RCBD), with four replications having pot and plot dimensions
of 30 x 30cm and 1.2 x 1.2, respectively. Uniform cultural practices were applied to all
treatments. Statistical analysis was used to analyze soil and crop data. Results showed
that application of treatments at 2.0 and 32.0% reduced gravimetric moisture content at
significant (P <0.05) levels of 47 and 82% for the two studies. Available P was
significantly reduced by 57 and 87%, K by 125 and 140%, N and K by 57 and 233% at
2.0 and 32.0% treatments compared to control. Crop yield indices were depressed at
400 and 150% at 2.0 and 32.0% treatments for dry matter and grain. Current study
suggested that soil properties except pH and yield indices can be maximally degraded
if used motor oil is applied at rates of 2.0 or 32.0% or minimally at 0.5 and 8.0%.
Nwite James Nte, Enyioko Chimezie Onyeoziri, Nwogbaga Andrew Chukwuma. (2020) Impact of used motor oil on soil properties and yield indices of corn in Izzi, Ebonyi State, Nigeria, Asian Journal of Agriculture and Biology, Volume 8, Issue 3.
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