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The present study aimed to investigate the effect of certain physical methods (heat and microwave radiation) as non-pesticidal ways to control the Chinese beetle Callosobruchus chinensis (Coleoptera: Chrysomellidae). Exposure of 100 infested faba bean seeds implying different immature stages of C. chinensis, (egg, larvae or pupae) to a high level of temperature of 50° C for 15, 30, 45, 60, 75, 90, 105 and 120 min. showed that all stages were significantly sensitive at the highest exposure period of 120 min. Eggs were more tolerant to the tested level of high temperature of 50°C than larvae and/or pupae. The germination of the exposed broad faba been seeds to the same high temperature (50°C) for different periods was significantly affected and it was found that as the time of exposure increased the germination percentages decreased as compared with control.

Microwave Radiation and Heat Against Immature Stages of The Chinese Beetle Callosobruchus chinensis (Coleoptera: Chrysomellidae)