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ISSN : 1225-0171(Print)
ISSN : 2287-545X(Online)
Korean Journal of Applied Entomology Vol.48 No.2 pp.253-261

농약 사용 저감화를 위한 환경 친화적인 파밤나방(Spodoptera exigua)의 방제


Environment-Friendly Control of Beet Armyworm, Spodoptera exigua (Noctuidae: Lepidoptera) to Reduce Insecticide Use

김대용, 백승경, 김진수, 최수연, 박찬, 김태환, 진나영, 정선영, 윤영남, 유용만


  For the environment-friendly control of beet armyworm, Spodoptera exigua, in spring onion fields, we have examined an alternative application method. Twenty-five insecticides registered for spring onion were tested for control effect against the beet armyworm in the laboratory, then the best 9 chemical and a single biological insecticides were selected and compared with 2 new isolates of Bacillus thuringiensis in a polyvinyl house. After that, 4 chemical and 3 B. thuringiensis treatments were used in the field for the control of beet armyworm in the spring onion. Two application methods are used: one is triple treatments with the same chemical and the other is alternative application with different chemicals and B. thuringiensis for 7 days intervals. Indoxacarb WP – chlorfluazuron EC – B.t. var. kurstaki CAB141 and indoxacarb WP – methoxyfenozide + spinosad SC – Chlorfluazuron EC – B.t. var. aizawai CAB109, B.t. var. kurstaki CAB141 showed greater than 78% mortality of beet armyworm larvae and greater than 43% damage decrease in spring onions infested by beet armyworm. These results showed that alternative applications had higher control effect than any other applications. It was suggested that alternative applications with microbial biological agents such as B. thuringiensis might minimize the development of insecticide resistance and might be used as the environment-friendly control of the beet armyworm.