경기지역 원예작물 꽃노랑총채벌레 약제 감수성 = Insecticide Susceptibility of Western Flower Thrip, Frankliniella occidentalis (Thysanoptera: Thripidae) on Horticultural Crops in Gyeonggi Area

국문 초록 (Abstract)

경기지역 원예작물 시설재배지에 발생하는 꽃노랑총채벌레 (Frankliniella occidentalis)에 대한 약제 감수성을 검정한 결과는 다음과 같다. 재배작물과 관계없이 acetamiprid (8%) SP, clothianidin (8%) SC, imidacloprid (10%) WP, thiacloprid (10%) WG와 같은 네오니코티노인드계 약제에 대한 저항성이 두드러지게 나타났다. 과채류 재배지 채집 꽃노랑총채벌레에 대해 acetamiprid + spinetoram (6+4%) SC와 clothianidin + spinetoram (6+4%) SC, methoxyfenozide + spinetram (6+4%) SC가 90% 이상의 살충활성을 보였다. 실내에서 꽃노랑총채벌레에 살충효과가 높았던 약제를 대상으로 채집지역과 대상작물을 동일하게 화성지역 오이 시설재배지에서 포장검정을 수행한 결과 spinetoram (5%) WG의 경우 약제 처리 3, 6, 9일 경과 후 방제효과는 87.4, 88.0, 98.3%로 높아지는 경향을 보인 반면 imidacloprid (10%) WP는 약제 처리 3, 6, 9일 경과 후 방제효과는 1.7, 24.1, 43.6%로 나타나 실내검정 결과와 유사한 경향을 보였다. 따라서 원예작물 꽃노랑총채벌레 방제를 위해서 살충제 선택의 폭이 좁은 가운데, 스피노신계와 피롤계의 약제들이 타 계통의 약제에 비해 효과가 우수한 것으로 보이며, 구체적으로는 스피노신계의 spinetoram과 spinosad의 함량을 각각 4, 10% 이상 함유하거나 피롤계의 chlorfenapyr가 5% 이상 함유된 단제 또는 혼합제를 선택해야 할 것으로 보인다.

다국어 초록 (Multilingual Abstract)

This study was conducted to monitor the insecticidal susceptibility of western flower thrip, Frankliniella occidentalis, which damage horticultural crops in the Gyeonggi area. Bioassays were conducted under laboratory and greenhouse conditions by using the recommended concentrations of commercial insecticides being used for the control of thrips. Neonicotinoid insecticides, especially acetamiprid (8%) soluble powder (SP), clothianidin (8%) SC, imidacloprid (10%) wettable powder (WP) and thiacloprid (10%) water dispersible granule (WG) were not toxic to F. occidentalis collected from horticultural crops. However, F. occidentalis collected from vegetable greenhouses was extremely susceptible to acetamiprid + spinetoram (6 + 4%) suspension concentration (SC), clothianidin + spinetoram (6 + 4%) SC and methoxyfenozide + spinetoram (6 + 4%) SC, which resulted in over 90% control of thrips. In the greenhouse test, spinetoram (5%) WG, which caused 100% F. occidentalis mortality in the laboratory test, showed 87.4, 88.0, and 98.3% control at 3, 6, and 9 days after treatment, respectively, while imidacloprid (10%) WP showed below 44% control. From the results of this study, spinosin insecticides, such as more than over 4 and 10% of spinetoram and spinosad, and pyrrole insecticide, such as 5% chlorfenapyr, are recommended for the effective control of F. occidentalis.

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