This study monitored the influence of dumping cassava mill effluents (CME) on soil physicochemical parameters and selected soil plant nutrients. Soil samples were collected from eight (8) CME dumping sites in two seasons (Wet: May – September and Dry: November – March). In each sampling site, soil samples were obtained from discharge spot, 4 and 8 meters from discharge spot along the route of flow of effluents. Top soil samples, (0 – 30cm depth), sub-soil samples (31-60cm depth) and bottom soil samples (61-90cm depth) were collected from each sampling spot using plastic auger while control soil samples were from spots within each sampling site uncontaminated with effluents. The CME soil sample temperature and percentage moisture were significantly (p<0.05) higher than those of control soil samples. However, the pH of soil samples from CME dumpsites were alkaline (7.6 0.04 – 8.1 0.30). Similarly, low cation exchange capacities and exchangeable acidities (p<0.05) were obtained for CME dumpsite soil sample relative to control soil samples. This study also established low (p<0.05) aluminium ion (Al3+) sulphate ion (So42-), sodium ion (Na+) and potassium ion (k+) in the CME infiltrated soils. Although CME soil phosphate did not vary from that of control soil samples, CME dumpsite soil ammonium and nitrate ions were higher (p<0.05) than in control soil samples. These results therefore, indicate that the CME infiltrated soils may not be useful for agricultural purposes – unless properly managed.
INFLUENCE OF CASSAVA MILL EFFLUENT (CME) DUMPING ON SOIL PHYSICOCHEMICAL PARAMETERS AND SELECTED PLANT NUTRIENTS IN UTURU, ABIA STATE NIGERIA Chinyere, G.C.*, Nwaogwugwu, C.J., Akatobi, K.U., Osuocha, K.U
Categories: Research development