Chemical properties of soils submitted to the application of a bioactivator and basalt and serpentinite powders

ABSTRACT Dependence on external raw materials, the high cost of fertilizers, and search for more sustainable alternatives have encouraged research with remineralizers. This study aimed to evaluate effect adding remineralizers associated or not a bioactivator pH, H+Al, Al, P, K in two soils after four incubation times. A completely randomized experimental design was used 5 x 2 factorial scheme, as follows: doses (0, 2, 4, 8, 16 Mg ha-1), (with without application), type remineralizer (basalt serpentinite), soil class (Oxisol Entisol), replications. The were incubated 30, 90, 120, 240 days treatment applications. samples submitted analyses at end each period. use increasing favored an increase reduction Al H+Al studied soils. Serpentinite powder efficient neutralizing acidity, while basalt providing P reduced reaction time availability.