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| International Agrophysics |
| publisher: | Institute of Agrophysics
Polish Academy of Sciences
Lublin, Poland |
| ISSN: |
0236-8722 |
vol. 26, nr. 3 (2012)
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Calibration equations for two capacitance water content probes
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C. Paraskevas1, P. Georgiou1, A. Ilias2, A. Panoras2, C. Babajimopoulos1
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1 Department of Hydraulics, Soil Science and Agricultural Engineering,Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece |
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2 National Agricultural Research Foundation, Land Reclamation Institute, 57400, Thessaloniki, Greece |
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vol. 26 (2012), nr. 3,
pp. 285-293
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abstract
This paper presents the calibration equations of
two capacitance probes for monitoring the soil water content in
a lysimeter field. Capacitance probes provide readings at desired
depths and time intervals. The calibration equations are derived by
regression analysis between measurements of scaled frequency
and volumetric soil water content. The calibration equations are
compared with the manufacturer default equations to estimate the
irrigation water depth. The accuracy of capacitance probes in monitoring
soil water content increased by using the site-specific calibration
equations rather than the manufacturer default equation.
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keywords
capacitance probes, calibration equations, soil water content, Diviner 2000, EnviroScan
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