In soils contaminated with crude oil and inoculated with L.
subnudus for 3 months, organic matter and carbon were
higher than the control at all concentrations of
contamination (Table 1) while nitrogen remained
constant. Phosphorus constituents fluctuated and the
potassium levels were not significantly different from the
control except at 40% concentration. As shown in Table
2, nutrient contents were generally higher than the
control after six months of incubation except potassium
levels which were not significantly different from the
control.
The Total Petroleum Hydrocarbon (TPH) of crude oil
contaminated soils incubated with L. subnudus for 3 and
6 month are shown in Table 3 The rate of
biodegradation increased at 20% concentrations of crude