A pot experiment was conducted at the Teaching and Research Farm of the University of Agriculture Makurdi - Nigeria using soils collected from 6 locations (Daudu, Ayati, TseAgbakor, TseKough, Ayange, and Mbachor) to determine the effect of poultry manure and P solution concentrations on the yield of soybeans. Six levels of P solution concentration (0, 0.150, 0.175, 0.20, 0.225, 0.250 mg l-1) 2 levels of poultry manure (0 and 6 t ha-1) and six soils factorially combined constituted the experimental treatments. Four Kg of the soils were weighed into perforated plastic pots of 5 liters capacity and the treatments applied accordingly. Each pot received an initial application of 60 kg N ha-1 as urea, and 30 kg K ha-1 in the form of KCl as basal application and the pots were arranged in a Completely Randomized Design (CRD) with three replications. Three soybean seeds of the variety TGX 1935-3F were planted per pot and later thinned to 2 at two weeks after planting. The crops were grown to maturity and all agronomic practices carried out as at when necessary. Data collected were subjected to the analysis of variance. Results indicate that the soils under study had low to moderate levels of available P. The addition of Poultry manure contributed significantly to the yield of the crop. P solution concentration for optimal soybeans production on these soils varied from 0.175 mg l-1 at Ayati and Ayange to 0.225 mg l-1 at TseKough. For Daudu, TseAgbakor and Mbachor it was 0.200 mg l-1.