The Korean Journal of Pesticide Science (농약과학회지)

The Korean Society of Pesticide Science (한국농약과학회)
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Effects of Root Zone Applications of Some Systemic Insecticides for Control of the Brown Planthopper, Nilaparvata lugens ($St{\aa}l$) (Homoptera: Delphacidae)

벼멸구에 대한 여러 가지 침투성 살충제의 근부처리 효과

  • Pham, Hong-Hien (Institute of Agriculture and Life Science, Gyeong-Sang National University) ;
  • Kim, Jong-Kyu (Institute of Agriculture and Life Science, Gyeong-Sang National University) ;
  • Choi, Byeong-Ryeol (National Institute of Agricultural Science and Technology) ;
  • Song, Yoo-Han (Institute of Agriculture and Life Science, Gyeong-Sang National University)
  • 팜홍히엔 (경상대학교 응용생물환경학과) ;
  • 김종규 (경상대학교 응용생물환경학과) ;
  • 최병렬 (농업과학기술원 농업해충과) ;
  • 송유한 (경상대학교 응용생물환경학과)
  • Published : 2008.09.30
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Abstract

Laboratory and greenhouse experiments were conducted to evaluate the effect of root zone application of some systemic insecticides for control of the brown planthopper (BPH), Nilaparvata lugens, as one of the management option to minimize the adverse effects and maximize the efficacy of insecticide application. Five systemic insecticides, namely, carbofuran, carbosulfan, diazinon, ethoprophos and imidacloprid, as granular formulation were placed in the root zone and measured the mortality, fecundity, and nymphal survivorship of the planthopper. Diazinon and ethoprophos did not show the significant mortality of the BPH. When the BPH were inoculated at the day of carbofuran treatment, adult mortality was shown almost 100% at seven days after treatment and BPH nymphs were remained very few on rice at 25 days after treatment. When carbofuran were placed 10 days before the BPH inoculation, it showed almost 100% adult mortality after one day, and no nymphs were found until 25 day after inoculation. Efficacy of carbofuran on BPH when applied in 10 day-old rice was higher than in 30 day-old rice. These results indicated that the root zone application of carbofuran can control N. lugens effectively with less adverse effect to the natural enemies inhabited on rice plants.

벼 천적에는 최소한의 영향을 주면서 벼멸구에는 최대한의 효과를 쭐 수 있는 침투성 살충제의 근권처리 효과를 검정하기 위해 실험실과 온실내에서 실험을 수행하였다. 벼멸구의 사충률과 번식력, 약충의 생존율을 알아보기 위해서 입제형의 5가지 약제(carbofuran, carbosulfan, diazinon, ethoprophos, imidacloprid)를 근권에 처리한 결과 carbofura이 모든 실험에서 가장 효과가 있었으며, diazinon과 ethoprophos는 벼멸구의 사충률에 큰 영향을 주지 않았다. Carbofuran 처리후 당일 벼멸구를 접종하였을때, 성충은 처리 7일 후에 거의 100% 사충률을 보였고, 처리 25일 후까지 약충은 $1{\sim}2$마리 발견되었다. Carbofuran처리 10일 후에 벼멸구를 접종하였을 때, 벼멸구 접종 1일 후 100%에 가까운 사충율을 보였고, 약충은 25일 후까지도 발생되지 않았다. Carbofuran은 벼멸구 접종 30일 전보다 10일 전에 처리하는 것이 효과가 높았다. 따라서 carbofuran의 근권처리는 천적에는 해를 입히지 않고 벼멸구를 효과적으로 관리할 수 있는 것으로 나타났다.

Keywords

References

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