Articles

USING DIELECTRIC SOIL MOISTURE SENSORS FOR IRRIGATION SCHEDULING

Article number
537_55
Pages
471 – 477
Language
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.

Publication
Authors
B.R. Hanson, D.W. Peters
Keywords
Soil moisture, soil moisture sensors
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