出版社：Grupo de Pesquisa Metodologias em Ensino e Aprendizagem em Ciências
摘要：The municipality of Vitória do Xingu, in the State of Pará, presented a cattle herd of about 150 thousand heads in 2019, a consequence of the productive potential of the region. As a subsidy for the expansion of livestock activity, it is necessary to carry out studies aimed at maintaining soil quality in the systems established, subsidizing management alternatives. The objective of the work was to analyze the physical-chemical parameters considering the climatic period (rainy and dry) and the depth (0-20 and 20-40 cm), in a private property, located in the Municipality of Vitória do Xingu, Pará, being T1 (secondary vegetation), T2 (pasture for 10 years) and T3 (pasture for 30 years). For the statistical analysis of the attributes, the Wilcoxon non-parametric test (P <0.05) was applied. All soils were classified as medium texture. The soil density was higher in T3 and T2. The particle density was higher at T1, followed by T2 and T3. Pasture areas showed better fertility conditions than T1. The result of the Wilcoxon test demonstrated that in the superficial layer (0-20 cm), there were significant differences between the attributes analyzed, such differences being more evident in the rainy season. The attributes differed in the surface layer of T1 due to the climatic period. The same occurred with the T3 subsurface layer. The 30-year-old pasture proved to be in a greater stage of degradation than the others, requiring intervention aimed at improving pastures, in order to contribute to the productive and recovery potential of pastures on rural property.
