Correlation between the physical and chemical properties of an oxysol and the apparent electrical conductivity

Sareth Samantha Ulloa Galeano, Jhon Alexander Carrillo Rozo, Sergio David Parra González

Abstract


Background: Geophysical methods such as the determination of apparent electrical conductivity (Cea) with portable equipment such as the EM38-MK2 electromagnetometer, allow pedometric studies and soil segmentation to be carried out. Despite the potential of this technology, there is a lack of research in the Oxisols of the Colombian plateau that correlates it with routinely determined physical and chemical properties, which are of interest at various fields of knowledge. Objective: To correlate the apparent electrical conductivity of the soil measured with the EM38-MK2 electromagnetometer with the physical and chemical properties of an Oxisol from the Colombian plateau. Methodology: The research was conducted in three 9,000 m2 plots in which apparent electrical conductivity was measured and correlated with physical and chemical properties at a depth of 0–20 centimeters. Results: The Cea presented a high and significant correlation with the content of sand, silt, clay, organic carbon, manganese, field capacity and permanent wilting point, and a high index of spatial dependence. Implications: The research is the starting point for building predictive models of the Cea with soil variables for the region. Conclusion: The Cea determined with the EM38-MK2 had the sensitivity to be used at plot scale in soils with a high degree of evolution. Under the edaphoclimatic conditions of the study area, the information collected with this equipment can be correlated with variables of interest for the sustainable use and management of soils. 

Keywords


characterization; electromagnetic emission; geophysics; pedometry; spatial dependence.

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URN: http://www.revista.ccba.uady.mx/urn:ISSN:1870-0462-tsaes.v28i3.62681

DOI: http://dx.doi.org/10.56369/tsaes.6268

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