Physical Quality of an Oxisol in Different Agricultural Systems in Brazilian Cerrado

Abstract

The soil physical quality is a way of evaluating the current condition of forest plantations that is growing in the southeast region of Mato Grosso do Sul State. In this sense, this work aimed to evaluate the impact of the forest plantations on the physical quality of an Oxisol (Haplic Acrustox) in Cerrado Reforested ciliary forest, being used a completely randomized design, with 25 replications and 3 treatments. The analyzed attributes of the soil was: macroporosity (Ma), microporosity (Mi), total porosity (TP), bulk density (BD), real particle (RP), soil resistance to penetration (PR), gravimetric moisture (GM), volumetric moisture (VM) and sand, silt and clay contents. The three evaluated areas presented macroporosity below the critical limit (0.100 m³ m -³), thereby impairing the root development. The three evaluated areas affected the physical quality of the soil. Being the physical attributes that most influenced in the reduction of the soil physical quality was the bulk density, total porosity, microporosity, macroporosity and soil resistance to penetration.

Effect of Farming Systems on the Spatial Variability of Soil Physical Properties and Soybean Yield

“…With no soil turning, the pressures caused by farm machinery traffic and the natural settlement of particles raise soil compaction, thereby reducing pore size (Godoy et al, 2015). Pereira et al (2018b) assessed native forest in the Cerrado and in found BD values in natural Oxisol close to those recorded under MT, indicating compaction in the NT area and the effects of decompaction in MT. Additionally, higher GM and VM values may be related to the increase in MI under MT, retaining more water in the soil, despite the NT exhibiting more plant residue on the soil surface.…”