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The vinasse, generated from alcohol distillation, is an organic matter and nutrients rich residue widely used for fertigation in sugarcane plantings. However, if such effluent is applied in excessively high doses, it can unbalance the soil sorption complex, causing serious risks to the environment if disposed indiscriminately on soil. Thus, the objective of this study was to evaluate the effect of increasing doses of vinasse (0; 59; 119; 237e 474 m3 ha-1) and different incubation times (30 and 60 days) in the soil chemical proprieties. During the study, characterization of soil chemical attributes based on electrical conductivity of soil saturation extract (CEes), pH and exchangeable cations (K+ and Na+) levels. At the end of the study, it was concluded that the incubation time of vinasse in the soil affected the variables was studied. The contents of K+ and Na+ in the soil were significantly influenced by the application of vinasse increasing doses, however pH and CEes were little affected independent of the utilized doses. Application of water depths caused greater leaching of K+ in the soil than Na+, which can cause sodicity of soil due to the application of high doses of vinasse.

Atributos químicos de um Neossolo Regolítico distrófico em função das doses e tempos de aplicação de vinhaça.