Recycling sewage sludge in agricultural systems is being considered in Paraná, Brazil the most sustainable alternative to minimize negative impacts of these residues in the environment. In order to allow that occur with safety, treatment, as well as the achievement of certain quality standards are required. For that, the "Advanced Alkaline Stabilization with Subsequent Accelerated Drying" (N-Viro Process) is being adopted by the city of Curitiba. On the other hand, Brazilian farmers and agronomists are requiring more scientific information about the effects of such practice on acidic soils and grain crops cultivated under no-till to support their decisions. The objective of this research was to evaluate the effects of 0, 5, 10, 20, 40, and 80 Mg/ha of N-Viro Soil (aerobic sewage sludge produced at Belém-POTW; 67 % solids, pH 12.6; total N, P, K Ca and Mg respectively 0.63, 0.11, 0.05, 20.2 and 11.8 %) incorporated to an inceptsol under greenhouse conditions, and of 0, 3, 6, 12 and 24 Mg/ha surface applied to an oxisol under greenhouse and field conditions, on the yields, on the soil pH, Ca and Mg availability, and on the exchangeable Al levels and Ca movement to sub-surface in comparison to 1 Mg/ha of gypsum. The preliminary results indicate that the sludge product is capable to neutralize soil acidity, increase the CEC soil base saturation, supply with calcium plants and promote increase in yields.