Possibilities for Controlling Stored-Grain Insects with RF Energy*

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Abstract
Prior reviews of the literature are cited concerning insect control with radiofrequency (RF) electric fields. Basic principles of dielectric heating are discussed in relation to selective heating of insects in infested grain. The influence of various physical and entomological factors is discussed as supported by experimental evidence. Experimental exposure of insects to 40-MHz and 2,450-MHz fields and measured values of dielectric properties of insects and grain indicate that selective heating advantages may be better in the lower frequency range. Consideration of practical aspects indicates that immediate application of RF methods for insect control is probably not economically feasible, but that RF methods warrant continued evaluation for future possibilities.

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