Abstract

RUBIO, Valentina et al. Impact of soil physical and chemical properties on soil aggregate stability of mollisols. Cienc. suelo [online]. 2019, vol.37, n.2, pp.367-371. ISSN 1850-2067.

Aggregate stability (AS) is a key factor controlling soil erosion risk and compaction. The main objective of this work was to explore the impact of soil physical and chemical properties on AS in Mollisols, using Le Bissonnais method. To achieve this goal, 16 soils were selected to represent a range in soil physicochemical properties. Sand, Mg and organic carbon contents explained a high proportion of variability in AS. Crop rotations that increased soil C would aid in preventing losses in AS, although a decreasing response was observed for two of the evaluated mechanisms of AS.

Keywords : Soil physical quality; aggregate stability; Le Bissonnais.