EFFECTS OF COMPACTION DUE TO MACHINERY TRAFFIC ON SOIL PORE CONFIGURATION
Soil 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...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Ciência do Solo
2015-04-01
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| Series: | Revista Brasileira de Ciência do Solo |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000200408&lng=en&tlng=en |
| _version_ | 1818665516110184448 |
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| author | Carlos Germán Soracco Luis Alberto Lozano Rafael Villarreal Telmo Cecilio Palancar Daniel Jorajuria Collazo Guillermo Oliveiro Sarli Roberto Raúl Filgueira |
| author_facet | Carlos Germán Soracco Luis Alberto Lozano Rafael Villarreal Telmo Cecilio Palancar Daniel Jorajuria Collazo Guillermo Oliveiro Sarli Roberto Raúl Filgueira |
| author_sort | Carlos Germán Soracco |
| collection | DOAJ |
| description | Soil 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, K0; effective macro- and mesoporosity, εma and εme), with significantly lower values of K0, εma, and εme in the T5 treatment. The static indicators of bulk density (BD), derived total porosity (TP), and total macroporosity (θma) 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 K0 measured in the samples taken vertically than horizontally, which was more related to the presence of vertical biopores, and to isotropy of K0 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. |
| first_indexed | 2024-12-17T05:49:52Z |
| format | Article |
| id | doaj.art-e058c484a3944987bcde02d762e1ccb1 |
| institution | Directory Open Access Journal |
| issn | 1806-9657 |
| language | English |
| last_indexed | 2024-12-17T05:49:52Z |
| publishDate | 2015-04-01 |
| publisher | Sociedade Brasileira de Ciência do Solo |
| record_format | Article |
| series | Revista Brasileira de Ciência do Solo |
| spelling | doaj.art-e058c484a3944987bcde02d762e1ccb12022-12-21T22:01:11ZengSociedade Brasileira de Ciência do SoloRevista Brasileira de Ciência do Solo1806-96572015-04-0139240841510.1590/01000683rbcs20140359S0100-06832015000200408EFFECTS OF COMPACTION DUE TO MACHINERY TRAFFIC ON SOIL PORE CONFIGURATIONCarlos Germán SoraccoLuis Alberto LozanoRafael VillarrealTelmo Cecilio PalancarDaniel Jorajuria CollazoGuillermo Oliveiro SarliRoberto Raúl FilgueiraSoil 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, K0; effective macro- and mesoporosity, εma and εme), with significantly lower values of K0, εma, and εme in the T5 treatment. The static indicators of bulk density (BD), derived total porosity (TP), and total macroporosity (θma) 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 K0 measured in the samples taken vertically than horizontally, which was more related to the presence of vertical biopores, and to isotropy of K0 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.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000200408&lng=en&tlng=enporosidade efetivaporosidade totalanisotropia da porosidade do solocondutividade hidráulica |
| spellingShingle | Carlos Germán Soracco Luis Alberto Lozano Rafael Villarreal Telmo Cecilio Palancar Daniel Jorajuria Collazo Guillermo Oliveiro Sarli Roberto Raúl Filgueira EFFECTS OF COMPACTION DUE TO MACHINERY TRAFFIC ON SOIL PORE CONFIGURATION Revista Brasileira de Ciência do Solo porosidade efetiva porosidade total anisotropia da porosidade do solo condutividade hidráulica |
| title | EFFECTS OF COMPACTION DUE TO MACHINERY TRAFFIC ON SOIL PORE CONFIGURATION |
| title_full | EFFECTS OF COMPACTION DUE TO MACHINERY TRAFFIC ON SOIL PORE CONFIGURATION |
| title_fullStr | EFFECTS OF COMPACTION DUE TO MACHINERY TRAFFIC ON SOIL PORE CONFIGURATION |
| title_full_unstemmed | EFFECTS OF COMPACTION DUE TO MACHINERY TRAFFIC ON SOIL PORE CONFIGURATION |
| title_short | EFFECTS OF COMPACTION DUE TO MACHINERY TRAFFIC ON SOIL PORE CONFIGURATION |
| title_sort | effects of compaction due to machinery traffic on soil pore configuration |
| topic | porosidade efetiva porosidade total anisotropia da porosidade do solo condutividade hidráulica |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000200408&lng=en&tlng=en |
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