Journal Of Tropical Biosciences
Volume No: 11|
Page No: 89
| FullText PDF
Title: EFFECTS OF CULTIVATION ON PHYSICOCHEMICAL PROPERTIES OF SOIL IN ISOBERLINIA WOODLANDS SHIKA, NORTHERN GUINEA SAVANNA OF NIGERIA
BELLO, H., MUSA, A. O. AND RAMADAN, M.
DEPARTMENT OF BIOLOGICAL SCIENCES, FACULTY OF SCIENCE, AHMADU BELLO UNIVERSITY ZARIA- NIGERIA.
The objective of this study was to evaluate effects of cultivation on soil physicochemical properties of two sites in woodlands located in Shika, Northern Guinea Savanna of Nigeria. Samples were collected with an auger from the surface (0-15cm) and subsurface (15-30cm) depths. Parameters measured in the field included soil pH, organic carbon (OC), phosphorus (P), cation exchange capacity (CEC), exchangeable cations (Ca, Mg, K and Na). The soil pH in cultivated and uncultivated was 5.3 and 6.2 respectively. The cultivated site showed lower OC, P, N (0.75gkg-1, 0.65ppm, 0.53gkg-1) when compared to uncultivated site (0.97gkg-1, 0.79ppm, 0.53gkg-1) respectively. CEC was found to be higher in cultivated soil except Na (1.65cmolkg-1) which was lower than uncultivated site (1.8cmol/kg). The soils were characteristically alfisols and much degraded reflecting degrees of vegetal exploitation hence the woodland can still be called soil degraded Isoberlinia woodlands.