Effect of pasture improvement managements on physical properties and water content dynamics of a volcanic ash soil in southern Chile

Abstract:

The pastures in Chile are sustained on volcanic ash soils covering an area of 1,340,000 ha. Since 44% of these pastures are degraded, different strategies to improve these prairies have been implemented. This study examined the impact of the different pasture improvement managements (PIMs) on soil physical properties, water content dynamics and pasture productivity of a volcanic ash soil under sheep grazing. The experiment was established on a Duric Hapludand and considered four types of PIMs (fertilised-naturalised pasture, cultivated pasture, direct-drilled pasture, diverse-direct drilled pasture) including the initial situation (non-fertilised naturalised pasture). The effect of PIMs and grazing events on bulk density (BD), plant available water (PAW), air permeability (ka), saturated hydraulic conductivity (Ks) and pre-compression stress (Pc) in the topsoil (0–10 cm) was determined taking undisturbed soil …

Año de publicación:

2018

Keywords:

Fuente:

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