JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Calibrating Capacitance Sensor for Determining Water Content of Volcanic-Ash Soils
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Calibrating Capacitance Sensor for Determining Water Content of Volcanic-Ash Soils
Moon, Kyung-Hwan; Joa, Jae-Ho; Choi, Kyung-San; Seo, Hyoeng-Ho; Lim, Han-Cheol; Hyun, Hae-Nam;
  PDF(new window)
 Abstract
Capacitance soil moisture sensor is extensively used by soil research and irrigation management with its convenience and accuracy. This experiment was conducted to evaluate the acceptability of capacitance soil moisture sensor, named EnviroSCAN made by Sentek Ltd., in Jeju Island where volcanic ash soils are widely distributed, and to calibrate it to various soils with different amount of soil organic matter. For sensor calibration equation of volcanic ash soils, a logarithm function is better than a typical power function of non-volcanic ash soils. So there are possibilities of under evaluated in soil water contents in very wet and very dry conditions by using typical power function with volcanic ash soil areas. We suggested practical coefficients of typical calibration equation for using capacitance sensor in volcanic ash soils, also suggested equations for estimation of them with soil organic matter contents. The measurement of soil water content with a capacitance sensor can be affected by some soil characteristics such as porosity, soil organic matter content, EC, etc. So those factors should be controlled for improving the accuracy of measurement.
 Keywords
Capacitance soil moisture sensor;Calibration;Volcanic ash soil;
 Language
Korean
 Cited by
1.
해파리 분말의 상토 첨가물로서의 효과 및 상토의 미생물 군집 변화에 대한 연구,백보람;최재호;김영록;차하은;도형기;황철원;

한국토양비료학회지, 2012. vol.45. 2, pp.227-234 crossref(new window)
1.
Influences of Addition of Jellyfish Powder to Bed Soil and Bacterial Community Structure of Bed Soil, Korean Journal of Soil Science and Fertilizer, 2012, 45, 2, 227  crossref(new windwow)
2.
Selection of Nutrient Solution Strength and Media in Potting Without Nutrient Solution Recycling in Gerbera 'Sunny Lemon', Korean Journal of Soil Science and Fertilizer, 2011, 44, 6, 1300  crossref(new windwow)
 References
1.
Bell, J.P., T.J. Dean, and M.G. Hodnett. 1987. Soil moisture measurement by an improved capacitance technique, part II. Field techniques, evaluation and calibration. J. Hydrol. 93:79-90. crossref(new window)

2.
Fares, A. and A.K. Alva. 2000. Evaluation of capacitance probes for optimal irrigation of citrus through soil moisture monitoring in an entisol profile. Irrigation Sci. 19:57-64. crossref(new window)

3.
Fares, A.H. and H. Jenkins. 2007. Temperature-dependent scaled frequency: Improved accuracy of multisensor capacitance probes. Soil Sci. Soc. Am. J. 71:894. crossref(new window)

4.
Gardner, C., T. Dean, and J. Cooper. 1998. Soil water content measurement with a high-frequency capacitance sensor. J. Agric. Eng. Res. 71:395-403. crossref(new window)

5.
Geesing, D., M. Bachmaier, and U. Schmidhalter. 2004. Field calibration of a capacitance soil water probe in heterogeneous fields. Aust. J. Soil Res. 42:289-299. crossref(new window)

6.
Jabro, J., B. Leib, and A. Jabro. 2005. Estimating soil water content using site-specific calibration of capacitance measurements from sentek enviroscan systems. Appl. Eng. Agric. 21:393-399. crossref(new window)

7.
Oh, Y.T., D.S. Oh, K.C. Song, J.S. Shin, and J.N. Im. 1998. Application of dielectric sensor for soil moisture measurement. Korean J. Soc. Soil Sci. Fert. 31:85-94.

8.
Paltineanu, I. and J. Starr. 1997. Real-time soil water dynamics using multisensor capacitance probes: Laboratory calibration. Soil Sci. Soc. Am. J. 61:1576-1585. crossref(new window)

9.
Polyakov, V., A. Fares, and M. Ryder. 2005. Calibration of a capacitance system for measuring water content of tropical soil. Vadose Zone J 4:1004. crossref(new window)

10.
Regalado, C. 2004. A physical interpretation of logarithmic TDR calibration equations of volcanic soils and their solid fraction permittivity based on Lichtenecker's mixing formulae. Geoderma 123:41-50. crossref(new window)

11.
Robinson, D., C. Gardner, J. Evans, J. Cooper, M. Hodnett, and J. Bell. 1998. The dielectric calibration of capacitance probes for soil hydrology using an oscillation frequency response model. Hydrol. Earth Syst. Sci. 2:111-120. crossref(new window)

12.
Roth, K., R. Schulin, H. Fluhler, and W. Attinger. 1990. Calibration of time domain reflectometry for water content measurement using a composite dielectric approach. Wat. Resour. Res. 26:2267-2273.

13.
Topp, G., J. Davis, and A.P. Annan. 1980. Electromagnetic determination of soil water content: Measurements in coaxial transmission lines. Wat. Resour. Res. 16:574-582. crossref(new window)