This study is aimed at the development of a novel device for the physical control of insect pests by utilizing various characteristics of a high luminance yellow LED, in place of agricultural chemicals when targeting hard to control insect pests, such as common cutworms and cotton ballworms (family) that can ravage agricultural crops. Initially, the wavelength dependency and self regulated power spectrum of the electro retinogram (ERG signal) of the target insects were measured in terms of various photo stimuli. Then, based on the response characteristics of the ERG signals obtained from the experiments, an LED light source device was fabricated and was installed in the field. Finally, the effectiveness of the device in controlling insect pests is discussed, based on the investigation of the inhibiting effects on mating behavior estimated from the number of insect pests counted on cabbage plants in a test area, as well as verification of the photo taxis of the insects.
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