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This article in SSSAJ

  1. Vol. 30 No. 5, p. 541-544
    Received: Nov 22, 1965
    Accepted: May 13, 1966

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Volumetric Calibration of Neutron Moisture Probes1

  1. James E. Douglass2



A volumetric method of estimating the slope (b coefficient) of a neutron moisture probe calibration curve is discussed. Coefficients obtained for three probes by this method did not differ significantly between soil series or between horizons within a series. Simply dividing the count rate in water by 100 gave a value virtually identical to the b coefficient determined volumetrically for these probes and soils. Agreement was excellent between measured outflow and outflow predicted from neutron measurements made with a volumetrically calibrated moisture probe.

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