The importance of grain-moisture measurement and the use of electrical moisture meters are discussed briefly. References to earlier work with such moisture meters are cited, and a brief description of the electrical or dielectric properties which such instruments depend upon is included. The information available in the literature on the dielectric properties of grain is reviewed from the viewpoint of its usefulness in grain-moisture measurement. Factors other than moisture that influence the dielectric properties of grain are discussed, and suggestions are given concerning information needed to determine the best frequency ranges to use for more reliable moisture measurement of grain using electrical properties
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S.O. Nelsont (1977) studied this question.