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Effects of machinery trafficking in an agricultural soil assessed by Electrical Resistivity Tomography (ERT)

Aitor García-Tomillo
  • Corresponding author
  • Centro de Investigaciones Cientificas Avanzadas (CICA) - Facultad de Ciencias, grupo AQUASOL, Universidade da Coruna. Campus Elvina As Carballeiras s/n 15071 A Coruna, Spain
  • Email
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Tomás de Figueiredo
  • Centro de Investigacao de Montanha (CIMO), Instituto Politecnico de Braganca (ESA/IPB),Campus de Santa Apolonia, 5300-253 Braganca, Portugal
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Jorge Dafonte Dafonte
  • Departamento de Ingenieria Agroforestal, Universidad de Santiago de Compostela – Benigno Ledo s/n. CP- 27002, Lugo, Espana
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Arlindo Almeida
  • Centro de Investigacao de Montanha (CIMO), Instituto Politecnico de Braganca (ESA/IPB),Campus de Santa Apolonia, 5300-253 Braganca, Portugal
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Antonio Paz-González
  • Centro de Investigaciones Cientificas Avanzadas (CICA) - Facultad de Ciencias, grupo AQUASOL, Universidade daCoruna. Campus Elvina As Carballeiras s/n 15071 A Coruna, Spain
  • Other articles by this author:
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Published Online: 2018-10-31 | DOI: https://doi.org/10.1515/opag-2018-0042

Abstract

Soil compaction is a serious problem, which is aggravated due to its difficulty to locate and reverse. Electrical resistivity tomography (ERT) is a non-invasive geophysical method that can be used to identify compacted areas, soil horizon thickness and assess soil physical properties. This study assesses the relationship between ERT and soil compaction. Data were collected on a 4-m transect in a fallow plot located at Braganca (Portugal). Measurements were performed before and after tillage and tractor passage. Soil samples at different depths (0-0.05, 0.05-0.1 and 0.1-0.2 m depth) were taken to determine: soil bulk density, porosity, saturated hydraulic conductivity and soil water content. The effect of tillage and tractor passage was more significant on the first 0.05 m depth. In the wheel track areas, ERT suffered a reduction of about 40%, saturated hydraulic conductivity decreased by 70% and bulk density increased by 24%. These results proved that ERT can be a useful tool for assessing soil compaction.

Keywords: Electrical Resistivity Tomography; Saturated Hydraulic Conductivity; Soil Compaction; Tillage

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About the article

Received: 2018-05-25

Accepted: 2018-08-30

Published Online: 2018-10-31

Published in Print: 2018-10-01


Citation Information: Open Agriculture, Volume 3, Issue 1, Pages 378–385, ISSN (Online) 2391-9531, DOI: https://doi.org/10.1515/opag-2018-0042.

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© by Aitor García-Tomillo et al., published by De Gruyter. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License. BY-NC-ND 4.0

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