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Neutron Gauge Calibration Comparison of Methods

by G. L. Dickey, Technology Information Systems Div, United States,
R. G. Allen, Technology Information Systems Div, United States,
J. H. Barclay, Technology Information Systems Div, United States,
J. L. Wright, Technology Information Systems Div, United States,
J. F. Stone, Technology Information Systems Div, United States,
B. W. Draper, Technology Information Systems Div, United States,



Document Type: Proceeding Paper

Part of: Management of Irrigation and Drainage Systems: Integrated Perspectives

Abstract:

Several methods for obtaining soil samples for determining soil water content were used for field calibration of neutron gauges. This paper compares the results of calibration curves obtained from the study data by comparing intercepts, slopes and correlation coefficients ('r' values). The study found differences in characteristics between gauges of the same brand, differences between brands and a great effect by access tube materials on the calibration curve.

Subject Headings: Soil water | Calibration | Soil analysis | Curvature | Soil properties | Water sampling | Water meters

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