This study was undertaken to investigate mineral composition of the leaves of S. occidentalis L. used traditionally for nutritional purposes. Hence, leaf samples collected from fadama and upland locations were analyzed using Microkjeldahl method (N), Colorimetry Vanadomolybdate (Yellow) Method (P), Flame Photometry Method (Na and P), EDTA Titration Method (Ca and Mg), Atomic Absorption Spectrophotometery Method (Mn, Cu, Zn, and Fe), and Mohr Titration Method (Cl-). ANOVA and LSD at 5% level was used to analysed and separate the means for significant results. Results for interaction effect determined were all significant (P<0.05) in the leaves of the species studied with the following range of values obtained: N (1.53-2.77%), Na (3.73-5.40ppm), P (2.06-5.53ppm), K (2.43-11.57ppm), Ca (0.67-2.60ppm), Mg (3.27-4.73ppm), Cu (0.10-1.13ppm), Fe (0.20-1.03ppm), Mn (0.20-1.23ppm), Zn (0.02-0.47ppm), and Cl- (0.05.0-85ppm. Specifically, rainy season, fadama and upland locations, young and matured leaves were the most favourable treatments in the higher concentration of most mineral elements of the species e.g. N, P, Ca, Mg, Cu, Mn, Fe, Zn, and Cl-. The species is rich in these mineral elements studied, recommended for continued use and further research on anti-nutritional factors to ascertain the active compounds.
