SciELO - Scientific Electronic Library Online

vol.19 issue1Height and productivity of Urochloa brizantha in different seasons and cutoff frequenciesDifference in the reaction to Pyricularia oryzae of wheat materials in the vegetative and reproductive stages author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




  • Have no cited articlesCited by SciELO

Related links

  • Have no similar articlesSimilars in SciELO


Investigación Agraria

On-line version ISSN 2305-0683


COLMAN RIBELATTO, Patricia Juana et al. Characterization of the Maximum Density of the soil, Region Paraná Midwest. Investig. Agrar. [online]. 2017, vol.19, n.1, pp.49-55. ISSN 2305-0683.

The susceptibility of soil to compaction, evaluate by the Proctor test, is a measure that has been studied in agricultural production systems, aiming at a more detailed study of the degree of compression that can be achieved in a given soil. This study was aimed to compare different locations, (Guarapuava, Pinhão and Candói) at different depths (0-10, 10-20 and 20-40 cm for Guarapuava, 0-10, 10-25 and 25-40 cm for Pinhao and 0-15, 15-25 and 25-40 cm for Candói) as the maximum density of these soils. The samples were subjected to the normal Proctor test, determining the maximum density and the critical moisture for compaction. The accumulation of organic matter in the surface layer of soil provided a reduction of the maximum density and increased the critical moisture to soil compaction, increasing compression as there is an increase in depth.

Keywords : management; organic matter; resistance to compression; proctor standard..

        · abstract in Portuguese     · text in Portuguese     · Portuguese ( pdf )