Rice mill wastes and sawdust were used to amendsoil in Abakaliki Southeast, Nigeria to study its immediate and residualproductivity for three cropping seasons. Randomized Complete Block Design

was used in laying out the field with four treatments replicated five times. Results showed that soil texture remained sandy loam after cropping for three seasons. Grain yield of maize was significantly

(P<0.05) higher in Burnt Rice Mill Waste (BRMW), Unburnt Rice Mill Waste (URMW) and Sawdust (SD) amended plots relative to control for the three seasons. The grain yield of maize in BRMW amended plot was 8, 11 and 11% higher when compared to control for the studied seasons. Total porosity, macroporosity, micro-porosity and cation exchange capacity (CEC) had r = 0.90, r = 0.86, r = 0.74 and r=0.80 with grain yield of maize. There were r2 =0.82 and r2 = 0.73 for total porosity and macro-porosity with grain yield of maize. Organic carbon (r=0.57), available phosphorus (r=0.63), exchangeable magnesium (r= 0.59), base saturation (r= 0.51) and aluminum saturation (r = 0.58) and micro-porosity (r2 = 0.55), CEC

(r2 = 0.64) were significantly related to grain yield of maize. Burnt rice mill waste was more superior to improving soil productivity compared to others.