Red-Yellow Latosol Penetration Resistance Under Different Subsoiling Depths

Abstract

The objective of this work was to evaluate the penetration resistance (PR) of a red-yellow latosol submitted to two subsoiling depths for implanting a forest plantation. The subsoiling was evaluated at 40 cm (S-40) and 50 cm (S-50) of depth by determining the soil moisture and soil density, while soil PR was evaluated before and after subsoiling at five points transversely to the subsoiling line (furrow) up to a depth of 60 cm using an electronic penetrometer. The soil density in both treatments was not altered by soil management. Before soil preparation, the soil presented PR values above the critical limit in the 0 cm to 30 cm layers, and after subsoiling a reduction in those values was verified at depth. It can be concluded that the 50 cm (S-50) subsoiling depth is the most suitable for soil preparation in a forest stand implantation.

Root growth and crop performance of soybean under chemical, physical, and biological changes after subsoiling

“…Thus, subsoiling could be required to decrease soil density (Marasca, Lemos, Silva, Guerra, & Lanças, 2015; Souza, Souza, Cooper, & Tormena, 2015). In Red Latosol, with clayey texture the subsoiling positively affected rice yield (Pinheiro, Stone, & Barrigossi, 2016), in red‐yellow latosol with sandy texture, there was a decrease in PR values caused by the subsoiling equipment's rod action (Gonçalves, Lopes, Cavalieri‐Polizeli, Fiedler, & Stahl, 2019). The subsoiling in clay soil, improves the physical properties of soil, reduces root density in surface soil, and increases deep root growth, which alleviates root crowding in the upper soil layer and enhances water and nutrient absorption in the deeper soil layer of maize plants (Sun et al., 2017).…”