Vapour Effect of Kresoxim-methyl on Powdery Mildew of Barley and Cucumber

보리와 오이 흰가루병에 대한 Kresoxim-methyl의 훈증 효과

  • Kim, Heung-Tae (Dept. of Plant Medicine, Chungbuk National University) ;
  • Jang, Kyung-Soo (Screening Division, Korea Research Institute of Chemical Technology) ;
  • Choi, Gyung-Ja (Screening Division, Korea Research Institute of Chemical Technology) ;
  • Cho, Kwang-Yun (Screening Division, Korea Research Institute of Chemical Technology)
  • 김흥태 (충북대학교 농업생명환경대학 식물의학과) ;
  • 장경수 (한국화학연구원 스크리닝연구부) ;
  • 최경자 (한국화학연구원 스크리닝연구부) ;
  • 조광연 (한국화학연구원 스크리닝연구부)
  • Published : 2006.12.30

Abstract

The protective effect of kresoxim-methyl was investigated on 6 important plant diseases, and the vapour effect of it did on barley and cucumber powdery mildews, respectively. With 2.0 ${\mu}g\;mL^{-1}$ of kresoxim-methyl, its high activities against wheat leaf rust and barley powdery mildew were showed such as 92 and 100%, while activities were very low against rice sheath blight, tomato gray mold, and tomato late blight. In vapour phase control activity of kresoxim-methyl against barley powdery mildew was positively correlated with the applied concentrations, except for azoxystrobin and metominostrobin. With 200 ${\mu}g\;L^{-1}$, its control value was 71.9%. When 1000 ${\mu}g\;m^{-3}$ of kresoxim-methyl in vapour phase was applied on 4 plants of cucumber in a vinyl chamber, 51.1% of control value on kresoxim-methyl-treated cucumber was showed 7 days after the application.

Kresoxim-methyl의 주요 식물병에 대한 예방효과와 더불어 보리와 오이 흰가루병에 대한 훈증 효과를 조사하였다. Kresoxim-methyl은 밀 붉은녹병과 보리 흰가루병에 대해서 2.0 ${\mu}g\;mL^{-1}$의 처리구에서 92와 100%의 방제 효과를 보였다. 하지만 벼 잎집무늬마름병, 토마토의 잿빛곰팡이병과 역병에는 효과가 미미하였다. 보리 유묘에 kresoxim-methyl, azoxystrobin, metominostrobin을 훈증 처리하였을 때, kresoxim-methyl은 처리한 농도에 따라서 뚜렷한 방제 효과가 나타난 반면에, azoxystrobin과 metominostrobin의 훈증 효과는 매우 미미하였다. Kresoxim-methyl을 보리 유묘에 200 ${\mu}g\;L^{-1}$로 처리하였을 때, 71.9%의 효과를 보였으며, 1000과 5000 ${\mu}g\;L^{-1}$일 때, 보리 유묘에서의 흰가루병 발생을 80과 89.3% 억제하였다. 오이의 성체에 kresoxim-methyl 을 1000 ${\mu}g\;m^{-3}$의 약량으로 훈증 처리한 경우, 처리 전에 흰가루병이 발생하였던 7엽까지의 잎에서는 방제효과는 없었지만, 8엽부터는 7일간 훈증 처리한 처리구에서 51.1%의 효과를 보였다.

Keywords

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