Urša Pečan (Author), Damijana Kastelec (Author), Marina Pintar (Author)

Abstract

Correct soil water content measurement is important for various environmental and agricultural applications. The aim of thisstudy was to evaluate the performance of two commercially available dielectric sensors, the SM150T (Delta-T Devices) and TRIME-Pico 32(IMKO). We evaluated the manufacturer’s calibration functions and the two-point calibration function recommended by Delta-T Devices.The coefficients of the two-point calibration showed a statistically significant dependence on clay content. Because the soils testedcontained a wide range of clay contents, a clay content correction function was developed. Soil-specific calibration functions were alsodeveloped. In general, measurement errors were the largest when the manufacturer’s calibration was used, but were smaller for the SM150T[root mean square error (RMSE) of 0.011 to0.051m3m−3] compared to the TRIME-Pico 32 (RMSE of 0.030 to0.060m3m−3). The errorsdecreased after applying the clay content correction function for TRIME-Pico 32. For both sensor types, the two-point calibration reducedthe errors, and the soil-specific calibration yielded the lowest error rates.

Keywords

soil water;measurements;soil properties;dielectric sensors;calibration;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL BF - Biotechnical Faculty
UDC: 631.4
COBISS: 102113795 Link will open in a new window
ISSN: 0733-9437
Views: 137
Downloads: 37
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Metadata: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Other data

Secondary language: Slovenian
Secondary keywords: voda v tleh;vsebnost vode v tleh;lastnosti tal;meritve;dielektrični senzorji;kalibracija;
Type (COBISS): Article
Pages: 11 str.
Volume: ǂVol. ǂ148
Issue: ǂiss. ǂ6 (04022016)
Chronology: 2022
DOI: 10.1061/(ASCE)IR.1943-4774.0001677
ID: 14834754