In quantifying the least limiting water range (LLWR), different critical limits of resistance to penetration (RP) and moisture at field capacity (θFC) are generally used. For agricultural soils, these values are documented in the literature. However, for constructed soil after coal mining, there is a large information gap. The aim of this study was to quantify the least limiting water range of a constructed soil under different cover crops in a coal mining area in Candiota, RS (Southern Brazil), considering […]

The least limiting water range (LLWR) integrates the plant growth factors and the critical bulk density is an indicator of the soil structural quality. The objective of this study was to determine the LLWR of a clayey Oxisol. Soil samples with preserved structure were collected in an experiment with three levels of soil compaction: NT – continuous no-tillage for six years, NTc – no-tillage with additional compaction and Chi – chisel plowing on previous no-till soil. To determine soil penetration […]