Addition of lime and Phosphorus (P) fertilizers is often required for sustainable crop production on acid mineral soils. We evaluated the effectiveness of lime and P treatments on soybean (Glycine max L.) performance on an acidic Typic Paleustalf soil. Soil samples were incubated (for 7, 14 and 21 days) with 0, 1, 2, 3 and 4 t Ca(OH)₂ ha^-1 to determine the optimum liming rate. In the second experiment, incubation was for similar periods but soil amendments included 15 sole and combined applications of lime (2t ha^-1) and P (88kg P ha^-1 using Rock Phosphate, RP; Single Super Phosphate, SSP; and Organic Fertilizer, OF) in addition to a control. Eight treatment combinations (Control, Lime, RP, OF, L+ OF, L+ RP, OF+ RP and L+OF+RP) were also applied to two soybean varieties (early maturing TGX 1485-ID and late maturing TGX 1844-18E) grown on 1.0kg soil samples. Treatments were replicated three times in completely randomized design. Liming at the rate of 2.0t ha^-1 was optimum, soil pH being 6.1 - 6.6. Soil amendment increased pH to between 5.5 and 7.5 compared with the average of 5.2 for the control. At the end of a 3-week incubation period when the control had become acidic (4.8), slight reductions to between 5.2 and 7.4 were recorded for most of the amended samples. After 5 weeks of growth, TGX 1485-ID plants treated with OF+RP or OF were taller (28.50 and 27.66cm, respectively) than the control (20.03cm) and lime (19.33cm) treated plants. Shoot biomass of TGX 1485-ID was highest (5.66g pot^-1) with OM+RP and least (2.86g pot^-1) without fertilization, a trend also observed for TGX 1844-18E. Nodulation was at its peak (19) with L+OM+RP while untreated plants were without nodules. It was evident that the P-sources could be as effective as Ca(OH)₂ in soil pH correction. Evaluation of residual effects of the treatments should help elucidate their liming and nutrient supply capacity.