Abstract
The flight habits of fruit-piercing moths, such as Calpe gruesa, Adris tyrannus amurensis and others, were examined in various places of a peach orchard illuminated by several kinds of lamp in 1965-1966. It was recognized that moths' flying to orchard were inhibited by illumination throughout various kinds of lamp. In such areas of the orchard, illuminated brighter than 2 lux, the number of months were estimated less than 40% against that of untreated area in general. The moths' micro distribution in the orchard was also examined in relation to the light elements. From these experiments the illumination level or luminosity in orchard as a whole, not of lamp itself, was recognized as an important factor to inhibit the moths' coming and piercing. In this paper, some discussions on the illumination program were also described, including the information of the yellow fluorescent lamp (40 W).
