Abstract

BLANCO-SEPULVEDA, Rafael. Relationship between bulk density and mechanical resistance as an indicator of soil compaction. Agrociencia [online]. 2009, vol.43, n.3, pp.231-239. ISSN 2521-9766.

In scientific literature contrasting results have been reported concerning the relationship between bulk density (pj and soil penetration resistance (cone index = CI). The objective of this study was to demonstrate that there is a significant correlation between p_a and CI if sampling is conducted with moisture content at field capacity and sampling depth in soil with high gravel content is controlled. The regression equation obtained explained 60 % of the variability of ρ_a from CI and soil plasticity.

Keywords : Correlation and regression analysis; field capacity; gravel content; physical degradation of soil; penetrometer; plasticity.