The present study had the objective of evaluating leachate quality from soils that received different vinasse doses and incubation time. In twenty-seven 20' 110 cm (diameter ' height) PVC columns, three soils, classified as Haplic Nitosol, Yellow Argisol and Carbic Spodosol, were reproduced with horizons, thickness and densities similar to original. The soils were treated with vinasse in doses equivalent to 0 (control), 350 and 700 m³ ha-1 and submitted to incubation time of 30 and 60 days. Collected effluents were analyzed for K, Ca, Mg and Na contents, and data evaluated by multivariate statistical analysis, at 5% level. The results pointed out significant effect for K, Ca, Mg and Na with regard to soil, dose and incubation time, except for Na in relation to soil. The lowest values for cation concentrations in the leachate were obtained for Nitosol which presented the highest clay fraction, followed by Spodosol due to the spodic horizon. When compared to vinasse in nature, leachate cation concentrations were significantly reduced indicating high retention power of the soils.
vinasse; leachate; soil
