Calibrating resistance-type soil moisture units in a high-clay-content soil

Timothy D. Reynolds, Richard B. Shepard, J. W. Laundré, C. Larrabee Winter

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


A calibration equation describing the relationship between electrical resistance and gravimetric soil moisture was generated for resistance-type soil-moisture-sensing units to be used in a high-clay-content soil. Soil moisture percentages measured gravimetrically and percentages predicted by entering resistance values from a validation set of moisture-sensing units into the equation did not differ. Subsequent analyses indicated that with a calibration set of five soil moisture units, a reliable equation could be generated with data from as few as three wetting-drying cycles in a high-clay-content soil.

Original languageEnglish (US)
Pages (from-to)237-241
Number of pages5
JournalSoil Science
Issue number4
StatePublished - Oct 1987

ASJC Scopus subject areas

  • Soil Science


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