The Korean Journal of Pesticide Science (농약과학회지)

The Korean Society of Pesticide Science (한국농약과학회)
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Effect of Sublethal Doses of Imidacloprid on the Green Peach Aphid, Myzus persicae

Imidacloprid의 아치사량이 복숭아혹진딧물의 생물적 특성에 미치는 영향

  • Choi, Byeong-Ryeol (Division of Entomology National Institute of Agricultural Science and Technology, RDA) ;
  • Lee, Si-Woo (Division of Entomology National Institute of Agricultural Science and Technology, RDA) ;
  • Song, Yoo-Han (Department of Agricultural Biology, Gyeongsang National University) ;
  • Yoo, Jai-Ki (Division of Entomology National Institute of Agricultural Science and Technology, RDA) ;
  • Chung, Bu-Keun (Gyeongsangnam-do Agricultural Research and Extention Services)
  • 최병렬 (농업과학기술원 작물보호부 농업해충과) ;
  • 이시우 (농업과학기술원 작물보호부 농업해충과) ;
  • 송유한 (경상대학교 농과대학 농생물학과) ;
  • 유재기 (농업과학기술원 작물보호부 농업해충과) ;
  • Published : 2005.12.30
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Abstract

Sublethal dose effect of imidacloprid on green peach aphid (Myzus persicae) was investigated. Nymphs of green peach aphid newly produced were counted on 4 days after sub-lethal dose treatment of imidacloprid. Numbers of nymph were not significantly different between $LC_1$ treatment and untreated control. Their numbers of nymph were 8.8 and 12.7 at $LC_1$ and untreated control, respectively. When they were tented at $LC_{10}$, $LC_{30}$ and $LC_{50}$. their numbers of newly produced nymph were 6.0, 5.1 and 3.9 and reduction rates were 52.7%, 59.8% and 69.3% at each treatment compare to untreated control. Reduction rates of newly laid nymph were proportional to the concentrations of imidacloprid treated. Repellent effect of aphid to imidacloprid was bigger in dipping than in watering method. Secretion amount had negative correlation with imidacloprid concentration in dipping method and suppression of secretion went up to 96%. In watering method, amount of secretion did not show any difference between insecticide concentration, but suppression, compared to untreated control, was over 97%.

Imidaclopid의 아치사량 처리에 의한 복숭아혹진딧물의 생물적 특성에 미치는 영향을 조사하여 imidacloprid의 사용 약량을 줄일 수 있는 방안을 모색코자 본 시험을 수행하였다. 복숭아혹진딧물에 아치사 농도로 처리한 후 4일간 산자수를 조사하였으며, $LC_1$의 농도로 처리한 후 복숭아혹진딧물의 산자수는 8.8마리로 무처리 12.7마리와 유의성을 보이지 않았으나, $LC_{10}$, $LC_{30}$, $LC_{50}$ 등의 처리에서는 산자수가 각각 6.0, 5.1, 3.9마리로 무처리보다 적게 낳았다. 산자억제율도 52.7, 59.8, 69.3%로 농도가 높을수록 높았다. 복숭아 혹진딧물에 대한 처리방법별 기피효과는 침지처리가 관주처리보다 높았으며 농도가 높아질수록 더 크게 나타났다. 복숭아혹진딧물의 아치사량 처리 후 배설량은 침지처리에서는 농도가 높아질수록 적어졌다. 무처리 대비 배설억제율은 $80{\sim}96%$이었으며, 관주처리에서는 농도별 배설량 차이는 보이지 않았지만 무처리 대비 배설억제율은 97%이상을 보였다.

Keywords

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