The utilization of urban wastes as organic matter and nutrient source contributes to decrease modern societies pressure on the environment. On the other hand, incorporation of organic matter sources into degraded soils and exposed spoils has been an approach to build edafic conditions for plant growth on such sites. This study aimed to evaluate fertility and vegetative cover (Paspalum notatum var. saurae Parodi) of an exposed spoil treated with increasing rates (0 - 76 Mg ha-1, dry matter basis) of either domestic sewage sludge or municipal composted waste. Results have showed that sewage sludge raised spoil's CEC and contents of N, P and Zn, while composted waste did not. Surface vegetative cover ranged from 68 to 96% for sewage sludge treatments (asymptotic response) and from 22 to 67% composted waste treatments (linear response). Values of CEC and contents of N, P e Zn explained 94% vegetative cover variations on surface area.
residues; garbage; biosolids; plant nutrition; revegetation
