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Method to estimate soil macroporosity and microporosity based on sand content and bulk density

Rubismar Stolf, Álvaro de Mendonça Thurler, Osny Oliveira Santos Bacchi, Klaus Reichardt

01/Apr/2011

Macroporosity is often used in the determination of soil compaction. Reduced macroporosity can lead to poor drainage, low root aeration and soil degradation. The aim of this study was to develop and test different models to estimate macro and microporosity efficiently, using multiple regression. Ten soils were selected within a large range of textures: sand (Sa) 0.07-0.84; silt 0.03-0.24; clay 0.13-0.78 kg kg-1 and subjected to three compaction levels (three bulk densities, BD). Two models with similar accuracy were selected, […]