CHANGES IN PHYSICOCHEMICAL AND HEAVY METAL PROPERTIES OF SOIL TREATED WITH SPENT ENGINE OIL AND POULTRY MANURE AFTER 12 WEEKS OF GROWING Phyllanthus urinaria
IFEDIORA, N. H., OTI, V. O. AND ADAJI, A.
ABSTRACT
Lubricating oil usually contains chemical additives including amines, phenols, benzenes,
calcium, zinc, barium, magnesium, phosphorus, sulphur and lead. This study was done to
assess the changes in physicochemical and heavy metal properties of soil treated with spent
engine oil and poultry manure after 12 weeks of growing Phyllanthus urinaria. It was done
in the screen house of the Department of Plant Science and Biotechnology, Michael Okpara
university of Agriculture, Umudike (MOUAU). Soil samples at the depth of 0 – 15 cm, spent
engine oil and…