Korean journal of applied entomology (한국응용곤충학회지)

Korean Society of Applied Entomology (한국응용곤충학회)
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Evaluation of Susceptibility of Spoladea recurvalis (Lepidoptera: Crambidae) to Five Insecticides in Spinach

시금치 해충 흰띠명나방(Spoladea recurvalis)의 살충제 감수성

  • Young Su, Lee (Gyeonggi-do Agricultural Research and Extension Services) ;
  • Hee-A, Lee (Gyeonggi-do Agricultural Research and Extension Services) ;
  • So-Hee, Kim (Gyeonggi-do Agricultural Research and Extension Services) ;
  • Jong Yoon, Choi (Gyeonggi-do Agricultural Research and Extension Services) ;
  • Hyun Ju, Lee (Gyeonggi-do Agricultural Research and Extension Services) ;
  • Sang-Woo, Lee (Gyeonggi-do Agricultural Research and Extension Services) ;
  • Jung-Soo, Park (Gyeonggi-do Agricultural Research and Extension Services)
  • 이영수 (경기도농업기술원 환경농업연구과) ;
  • 이희아 (경기도농업기술원 환경농업연구과) ;
  • 김소희 (경기도농업기술원 환경농업연구과) ;
  • 최종윤 (경기도농업기술원 환경농업연구과) ;
  • 이현주 (경기도농업기술원 환경농업연구과) ;
  • 이상우 (경기도농업기술원 환경농업연구과) ;
  • 박중수 (경기도농업기술원 환경농업연구과)
  • Received : 2022.08.20
  • Accepted : 2022.09.19
  • Published : 2022.12.01
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Abstract

The susceptibilities of five insecticides to the larvae of Spoladea recurvalis, a major pest of spinach, were evaluated. Lufenuron EC, chromafenozide EC, chlorantraniliprole WP, tebufenozide WP, and pyridalyl EW showed 90% or more insecticidal activity at dilution concentrations of 2 (12.5 ppm), 4 (12.5 ppm), 8 (2.5 ppm), 4 (20.0 ppm), and 8 (12.5 ppm), respectively. At their recommended concentrations, Chromafenozide EC, chlorantraniliprole WP, tebufenozide WP, and pyridalyl EW showed very high insecticidal activity of 98.3%, 100%, 95.0%, and 100%, respectively, after 72 h on S. recurvalis larvae exposed after 7 days of treatment. Field tests at two spinach greenhouses in Hwaseong and Yeoncheon showed a high control effect of over 90% after 7 days of treatment in both areas. In addition, the insecticides can be used as exclusive agents for S. recurvalis that occurs in spinach, as there is no phytotoxicity even at double doses.

시금치의 주요 해충인 흰띠명나방(Spoladea recurvalis) 유충의 살충제 5종에 대한 감수성을 검정하였다. Lufenuron EC, chromafenozide EC, chlorantraniliprole WP, tebufenozide WP, pyridalyl EW는 각각 2(12.5 ppm), 4(12.5 ppm), 8(2.5 ppm), 4(20.0 ppm), 8(12.5 ppm)배의 희석농도에서 90% 이상의 높은 살충활성을 보였다. 추천농도로 경엽처리 후 7일이 경과된 시금치 잎에 흰띠명나방 유충이 72시간 동안 노출되었을 경우 chromafenozide EC, chlorantraniliprole WP, tebufenozide WP, pyridalyl EW의 살충률은 각각 98.3%, 100%, 95.0%, 100%로 나타나 높은 잔효성을 보였다. 흰띠명나방에 대한 방제효과를 2개소(화성, 연천)에서 포장검정 결과, 5종의 약제 모두 2개소에서 약제처리 7일 경과 후 90% 이상의 방제효과를 보였으며 2배량에서도 약해가 없어 향후 흰띠명나방 방제약제로 시금치에 활용이 가능할 것으로 판단된다.

Keywords

Acknowledgement

We are grateful to colleagues of the insect ecology laboratory for rearing insect pest and supporting field test. This research was funded by the project of Development of integrate control technique for the sporadic gypsy moth(No. PJ01567003), which was funded by the Rural Development Administration.

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