Figure 4:Biodegradation pattern of some PAHs in crude oil contaminated soil incubated with P. sajor-caju during weekly incubation periods (% reduction in concentration for benzo(a)anthracene=35.4-40.0%;benzo(k)fluoranthene=11.2-67.8% ; indeno(1,2,3,cd)pyrene=50.0-56.0% and benzo(b)fluoranthene=13.6-54.1%).