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Soil Science Society of America Journal Abstract -

Conductivity Instrumentation for In Situ Measurement of Soil Salinity1


This article in SSSAJ

  1. Vol. 33 No. 5, p. 787-789
    Received: Feb 7, 1969
    Accepted: Apr 21, 1969

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  1. C. G. Enfield and
  2. D. D. Evans2



A transducer has been developed which is capable of assessing, in situ, the electrical conductivity of soil water. The transducer is constructed of porous glass with platinum electrodes and operates over the entire field moisture range. The transducer is accurate to within 10% when measured with an associated soild state meter in a conductivity range of 1–20 millimhos/cm @ 25C and a temperature range of 5–45C. Typically, the time required to achieve 63% of equilibrium response, in aqueous solutions, is less than 2 hours.

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