Comparing the DUALEM and VÉRIS sensors for mapping soil properties
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John V. Stafford
Abstract
The objective of this study was to evaluate two apparent soil electrical
conductivity (ECa) sensors (DUALEM 1S and VERIS 3100) for mapping soil property
variability in a Mediterranean shallow soil. The ECa data from the top 0-0.30 m soil
layer were used. Soil spatial variability of a 6ha experimental field was characterized by
76 samples geo-referenced with GPS. The results of the DUALEM sensor showed
significant correlation coefficients between ECa and the relative field elevation (RFE),
bedrock depth, pH, sand, silt and soil moisture content. On the other hand, significant
correlation coefficients were found between the ECa measured by VÉRIS sensor and
pH, sand, clay, organic matter and soil moisture content. This paper discusses possible reasons for the somewhat different behaviour of the two sensors.
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Citation
J. Serrano, S. Shahidian, J. Marques da Silva (2013). Comparing the DUALEM and VÉRIS sensors for mapping soil properties. In: Precision agriculture’13, edited by John V. Stafford, 25-32. ISBN: 978-90-8686-224-5; DOI: 10.3920/978-90-8686-778-3; 9th European Conference on Precision Agriculture 2013, Lleida, Catalonia, Spain, 7-11 July 2013. 25-32 (Comunicação oral apresentada na 9th European Conference on Precision Agriculture 2013, Lleida, Catalonia, Spain, 7-11 July 2013.