USO DE TORTA DE FILTRO DA INDÚSTRIA SUCROALCOOLEIRA NA TOLERÂNCIA AO CÁDMIO EM JATOBÁ (Hymenaea courbaril var. altissima (Ducke) Y.T.Lee & Langenh)

Abstract

Soil contamination by heavy metals, especially cadmium (Cd), poses a significant risk to the environment and human health. This study aims to evaluate the tolerance of Jatobá (Hymenaea courbaril var. altíssima) to the metal cadmium as well as the effect of applying filter cake as a soil conditioning agent to attenuate the toxicological potential of this metal. The experiment was carried out in artificially contaminated soils with increasing concentrations of cadmium (0, 2.5, 5, 7.5, 10 mg/dm³) and two soil conditioner conditions (with and without conditioner) treated with 25% (v /v) of filter cake. Growth parameters, gas exchange, chlorophyll fluorescence, leaf nutrition and Cd accumulation in Jatobá plants were evaluated. The results showed that the application of filter cake promoted plant growth and improved nutrient absorption, even in the presence of cadmium. A greater accumulation of Cd was observed in the roots and stems, with a lower concentration in the leaves, indicating the Jatobá's tolerance capacity to the metal. The filter cake proved to be effective in reducing the toxic effects of cadmium, highlighting its potential as a sustainable management practice for the recovery of contaminated soils.