Korean journal of applied entomology (한국응용곤충학회지)

Korean Society of Applied Entomology (한국응용곤충학회)
권호 표지

Studies on Life Cycle of Rice Leaf Beetle (Oulema oryzae KUWAYAMA) and Control Method

벼잎벌레 생태(生態)와 피해해석(被害解析) 및 방제(防除)에 관(關)한 연구(硏究)

  • Yu, B.J. (Gangweon Provincial Office of Rural Development) ;
  • Kim, C.O. (Gangweon Provincial Office of Rural Development) ;
  • Chung, S.M. (Gangweon Provincial Office of Rural Development) ;
  • Park, Y.S. (Gangweon Provincial Office of Rural Development) ;
  • Huh, B.L. (Gangweon Provincial Office of Rural Development)
  • Published : 1985.04.30

Abstract

Experiments were carried out to investigate the life cycle of the rice leaf beetle (RLB), (Oulema oryzae KUWAYAMA) ,yield losses by its damages, and control method in $1976{\sim}1983$ at the experimental field of Gangweon PORD. Peak occurrence of adult and larva rice beetle was late May and mid-June, respectively. Adult overwintered in the forest of mountain and move into the paddy field to lay eggs on the rice leaf from late seedling stage. A female adult laid eggs for 2 days, and egg, larval and pupal period was 9, 16, and 9 days, respectively. Leersia japonica MAKINO was damaged slightly by the beetle. The yield reduction by artifical defoliation ranged from 6 to 40% and yield reduction increased as leaf feeding delayed until mid-July. All insecicides show 100% of control value against RLB.

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