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Flight activity and injury characteristics of beet armyworm spodoptera exigua huebner lepidoptera noctuidae in southern region of korea



Flight activity and injury characteristics of beet armyworm spodoptera exigua huebner lepidoptera noctuidae in southern region of korea



Korean Journal of Applied Entomology 30(2): 124-129



This study investigated seasonal occurrence and daily flight activity using synthetic sex pheromone and injury characteristics of beet armyworm, Spodoptera exigua in Chonnam area of Korea in 1990. Male adults were attracted to phermone trap from mid-June to late November with the peaks at mid-late August, mid-late September and early-mid November in vinyl house and also were attracted from mid October to late November in field. Primary peak of occurrence in vinyl house was 20 days sooner than field. It seems to have 6 generations of year in Chonnam region based on the estimation of larval biomass. Daily male flight was active from midnight to before sunrise with the peak at 4-6 A.M. In injury characteristics at various host plants, damage was great in early growing stage at below 10 cm of plant height in Allium fistulosum. Chrysanthemum morifolium was damaged at mostly upper part of leaves reaching to the extent up to 70%. In case of Gypsophila paniculata, plants injured at early growing stage do not grow and flower normally.

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Accession: 007353243

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