ISHS Acta Horticulturae 537: III International Symposium on Irrigation of Horticultural Crops
USING DIELECTRIC SOIL MOISTURE SENSORS FOR IRRIGATION SCHEDULING |
| Authors: | B.R. Hanson, D.W. Peters |
| Keywords: | Soil moisture, soil moisture sensors |
| Abstract:
Six dielectric soil moisture sensors were evaluated for their response to changes in soil moisture content and their appropriateness for irrigation scheduling on farms. The devices were the Sentry 200-AP, TRIME, TRASE, Aquaterr moisture meter, Enviroscan instrument, and ThetaProbe. Results showed the TRASE and ThetaProbe devices to be relatively accurate compared to the other instruments. Calibration of the other instruments may be necessary under some conditions. In the fine-textured soils, the TDR devices sometimes would not operate. The Enviroscan has the advantage of high-frequency measurements, but tended to overestimate soil moisture contents. | |
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