Parâmetros químicos de solos sob sistema de Pastoreio racional voisin no cerrado

Abstract

This study evaluated the temporal evolution of soil chemical attributes in an area managed under the Voisin Rational Grazing (VRG) system in the Brazilian Cerrado between 2019, 2022, and 2025, aiming to assess its contribution to soil fertility improvement and agroecological sustainability of pastures. Soil pH, calcium (Ca), magnesium (Mg), potential acidity (H+Al), cation exchange capacity (CEC), phosphorus (P), potassium (K), organic matter, and base saturation were analyzed at the 0–20 cm depth using composite samples collected during the rainy season. Data were subjected to normality (Shapiro–Wilk test) and homogeneity of variance (Levene test) assessments. Variables meeting parametric assumptions were analyzed using analysis of variance (ANOVA), followed by Tukey’s test (p < 0.05). Non-normally distributed variables were analyzed using the Kruskal–Wallis test, with Dunn’s post-hoc test. The results showed significant increases in Ca, Mg, and CEC, stability in soil pH and base saturation, and natural fluctuations in P, K, and organic matter contents. The findings indicate that VRG management enhances biogeochemical nutrient cycling, improves soil fertility, and represents an effective strategy for pasture regeneration in the Cerrado.