Efeito da compactação do solo pelo tráfego de máquinas na configuração dos poros do solo

dc.creatorSoracco, Carlos Germán
dc.creatorLozano, Luis Alberto
dc.creatorVillarreal, Rafael
dc.creatorPalancar, Telmo
dc.creatorJorajuría Collazo, Daniel
dc.creatorSarli, Guillermo Oliverio
dc.creatorFilgueira, Roberto Raúl
dc.date2015
dc.date2019-11-21T17:40:17Z
dc.date.accessioned2023-07-14T17:34:02Z
dc.date.available2023-07-14T17:34:02Z
dc.identifierhttp://sedici.unlp.edu.ar/handle/10915/85911
dc.identifierissn:0100-0683
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7427979
dc.descriptionSoil compaction has been recognized as a severe problem in mechanized agriculture and has an influence on many soil properties and processes. Yet, there are few studies on the long-term effects of soil compaction, and the development of soil compaction has been shown through a limited number of soil parameters. The objectives of this study were to evaluate the persistence of soil compaction effects (three traffic treatments: T0, without traffic; T3, three tractor passes; and T5, five tractor passes) on pore system configuration, through static and dynamic determinations; and to determine changes in soil pore orientation due to soil compaction through measurement of hydraulic conductivity of saturated soil in samples taken vertically and horizontally. Traffic led to persistent changes in all the dynamic indicators studied (saturated hydraulic conductivity, K<sub>0</sub>; effective macro- and mesoporosity, ε<sub>ma</sub> and ε<sub>me</sub>), with significantly lower values of K0, ε<sub>ma</sub>, and ε<sub>me</sub> in the T5 treatment. The static indicators of bulk density (BD), derived total porosity (TP), and total macroporosity (θ<sub>ma</sub>) did not vary significantly among the treatments. This means that machine traffic did not produce persistent changes on these variables after two years. However, the orientation of the soil pore system was modified by traffic. Even in T0, there were greater changes in K<sub>0</sub> measured in the samples taken vertically than horizontally, which was more related to the presence of vertical biopores, and to isotropy of K<sub>0</sub> in the treatments with machine traffic. Overall, the results showed that dynamic indicators are more sensitive to the effects of compaction and that, in the future, static indicators should not be used as compaction indicators without being complemented by dynamic indicators.
dc.descriptionFacultad de Ciencias Agrarias y Forestales
dc.formatapplication/pdf
dc.format408-415
dc.languageen
dc.rightshttp://creativecommons.org/licenses/by/4.0/
dc.rightsCreative Commons Attribution 4.0 International (CC BY 4.0)
dc.subjectCiencias Agrarias
dc.subjectEffective porosity
dc.subjectHydraulic conductivity
dc.subjectSoil pore anisotropy
dc.subjectTotal porosity
dc.titleEffects of compaction due to machinery traffic on soil pore configuration
dc.titleEfeito da compactação do solo pelo tráfego de máquinas na configuração dos poros do solo
dc.typeArticulo
dc.typeArticulo


Este ítem pertenece a la siguiente institución