A New Method for the Control of Moisture and Insect Infestations of Grain by Microwave Power*

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Abstract
A new method for the control of three common types of wheat and flour insects (Tribolium confusum, Sitophilus granarius, and Cryptolestes ferruginous) by microwave power is presented. The method is based on the detection of the dielectric properties of these insects and the design of microwave apparatus of sufficient capacity to disinfest reasonable quantities of grain by selective dielectric heating. Experimental arrangements for the drying of wheat using single- and double-stage dryers are also described, and the resulting effects on the milling and baking qualities of wheat dried by this method are discussed. Finally, it is shown that the equipment assembly may safely and effectively serve the dual function of moisture and insect control of wheat at low cost, and compete favourably with gas schemes and chemical sterilants now used to dry wheat and eliminate its infestations.

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