The Korean Journal of Pesticide Science (농약과학회지)

The Korean Society of Pesticide Science (한국농약과학회)
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Insecticidal Activity of 26 Insectcides against Eggs and Nymphs of Lycorma delicatula (Hemiptera: Fulgoridae)

꽃매미의 알과 약충에 대한 26 약제의 살충활성

  • Shin, Yun-Ho (Dept. of Plant Medicine, College of Agriculture, Life, and Environment Sciences, Chungbuk National University) ;
  • Moon, Sang-Rae (Dept. of Plant Medicine, College of Agriculture, Life, and Environment Sciences, Chungbuk National University) ;
  • Yoon, Chang-Mann (Dept. of Plant Medicine, College of Agriculture, Life, and Environment Sciences, Chungbuk National University) ;
  • Ahn, Ki-Su (Chungbuk Provincial ARES) ;
  • Kim, Gil-Hah (Dept. of Plant Medicine, College of Agriculture, Life, and Environment Sciences, Chungbuk National University)
  • 신윤호 (충북대학교 농업생명환경대학 식물의학과) ;
  • 문상래 (충북대학교 농업생명환경대학 식물의학과) ;
  • 윤창만 (충북대학교 농업생명환경대학 식물의학과) ;
  • 안기수 (충북농업과학기술원 농업환경과) ;
  • 김길하 (충북대학교 농업생명환경대학 식물의학과)
  • Received : 2010.05.10
  • Accepted : 2010.05.24
  • Published : 2010.06.30
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Abstract

This study was performed to investigate the hatching rate and eggs period until hatching in the laboratory against lantern fly, Lycorma delicatula eggs with different collecting date of eggs, and the susceptibility of 26 insecticides to the eggs, 1st and 2nd nymphs of Lycorma delicatula. The eggs of L. delicatula were increased the hatching rates as passed collecting date of eggs, and shorten in eggs period until hatching. By screening the susceptibility of 26 insecticides to the eggs, 1st, and 2nd nymphs, chlorpyrifos (312.5 ppm) showed the perfect inhibition effect of hatching against the eggs, however, the other insecticides did not show that effect. According to the collecting date of eggs, chlorpyrifos bioassayed the inecticidal effect with different concentration (625 ppm at double conc., 312.5 ppm at recommended conc., and 156.3 ppm at half conc.). The eggs collected from Apr. 20th 2010, were showed the inhibition effect of hatching over 94.5%, but the eggs collected from May 10th, 2010 were showed the inhibition effect of hatching as 86.7, 71.1, and 47.1%, respectively. However, hatched eggs were all killed perfectly within 24 hours. At recommended and half concentrations, the eggs collected from 15, May, are decreased the effect as 48.6%, 53.7%, respectively, and the mortality of eggs hatched also decreased as 61.0 and 22.0%, respectively, however, double concentrations did not show the changes. From the above results, it will be anticipate to show the higher mortality against the eggs of L. delicatula when treated chlorpyrifos until late-April.

본 연구는 꽃매미 알의 채집시기별 실내에서의 부화율, 부화기간을 조사하였으며 꽃매미의 알과 1~2령 약충에 대하여 26 약제의 약제감수성을 조사하였다. 야외에서 꽃매미 알은 산란된 시점(2009년 10월~11월)에서 알의 채집시기가 늦어질수록 부화율이 높아졌고, 부화기간도 짧아졌다. 꽃매미 알과 1~2령 약충의 약제감수성 시험결과, chlorpyrifos (312.5ppm)는 꽃매미 알에 대해서 100%의 높은 부화억제효과를 나타내었지만, 나머지 약제는 효과가 없었다. 알의 채집시기별로 chlorpyrifos의 효과는, 배수농도 (625 ppm), 추천농도(312.5 ppm), 반수농도(156.3 ppm)로 검정한 결과, 2010년 4월 20일에 채집된 알은 94.5%이상의 높은 부화억제효과를 나타냈지만, 5월 10일에 채집된 알은 각각 86.7%, 71.1%, 47.1%로 시험농도가 낮아질수록 효과는 낮아졌다. 하지만 부화 약충은 24시간이내에 100% 살충되었다. 5월 15일에 채집된 알은 배수농도를 제외하고 추천농도와 반수농도에서 각각 48.6%, 53.7%로 효과가 낮아졌으며, 부화한 약충의 사망률도 61%, 22%로 낮았다. 그리고 1령과 2령 약충은 모든 약제에 대해서 100% 살충되었다. 이상의 결과에서 늦어도 4월말까지 chlorpyrifos를 처리하는 것이 꽃매미 알에 대한 높은 살충효과를 기대할 수 있다.

Keywords

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