Anatomical Response of Digitaria horizontalis and Eluesine indica Grown in Waste Engine Oil Contaminated Soil
The ability of Digitaria horizontalis and Eluesine indica grass species to phytoremediate waste engine oil contaminated soil was investigated. Four (4) kg of air dried soil was measured into four (4) kg perforated plastic buckets. Waste engine oil was added to four (4) kg different soil samples to obtain different concentrations on weight basis: 0 % (control), 2 %, 4 %, 7 % and 10 % v/w oil-in-soil and allowed to stand for seven days before transplanting. At the end of 8 weeks of transplanting, the plants were harvested.