In addition to causing direct feeding damage to a variety of greenhouse crops, Frankliniella occidentalis also inflicts indirect harm by facilitating the transmission of the tomato spotted wilt virus. Historically, the prevention of F. occidentalis infestations has relied heavily on pesticide use. However, this approach has led to significant side effects in agricultural ecosystems, including the development of pest resistance and challenges in effective prevention. In response to these issues, research has been directed towards identifying alternative substances that circumvent the tolerance developed against chemical pesticides. Extracts from sixty-seven medicinal plants were prepared by soaking them in water for 24 hours at room temperature. These extracts were then applied to adult F. occidentalis, with particular attention to moutan extract treatment. This treatment demonstrated a 100% insecticidal effect on the first day. The moutan extract, specifically, was prepared using 50% ethanol, after which the ethanol and water were removed via a rotary evaporator. The resultant product was then lyophilized into a powder and used after being diluted with water. In indoor experiments, a 40% diluted solution was sprayed onto F. occidentalis, exhibiting a 100% insecticidal effect 24 hours post-treatment. Furthermore, a pot test indicated a 78% insecticidal effect on the first day of application. Ongoing research includes the analysis of active substances that demonstrate exceptional insecticidal properties and the conduct of on-site validation tests. The application of the aforementioned extract is anticipated to be effective in the prevention of F. occidentalis infestations.

총채벌레는 우리나라에 60여 종이 알려져 있으며 다양한 시설작물에서 직접적인 섭식 피해 이외에 토마토반점위조바이러스(TSWV)를 매 개하는 간접적인 피해도 유발한다. 그동안 총채벌레 방제는 살충제에 의존해 왔는데, 이는 농업환경에 많은 부작용을 유발하고 해충의 저항성을 유발시켜 더욱 방제를 어렵게 하고 있다. 이러한 문제를 해결할 수 있는 대안으로 내성 회피를 위한 물질을 탐색하였다. 실내검정으로 약용작물 67종의 추출물을 꽃노랑총채벌레 성충에 처리하여 가장 효과가 우수한 목단피를 선발하였다. 목단피 추출물을 처리 후 1일차에 100%의 살충효 과를 보였다. 또한, 목화진딧물은 3일차 83%, 복숭아혹진딧물 3일차 97%, 점박이응애 1일차 100%의 살충효과를 보였다. 고추 포트 검정에서 꽃노랑총채벌레 방제가는 1일차 77.6%, 2일차 40%의 효과가 나타났다. 현재 추가적으로 효과를 증대시킬 수 있는 물질을 탐색하고 있으며, 총 채벌레 방제에 본 추출물을 활용한다면 효과적일 것으로 기대된다.

재료 및 방법
    대상해충
    식물추출물 추출 및 선발
    목단피의 농축 및 동결·건조
    목단피의 꽃노랑총채벌레 살충활성 실내검정
    목단피의 꽃노랑총채벌레 살충활성 포트 검정
    목단피추출물을 이용한 포장 검정
결과 및 고찰
    식물추출물 유래 친환경자재 선발 및 살충효과
    목단피의 꽃노랑총채벌레 살충활성 포트 검정
    목단피추출물을 이용한 포장 검정
사 사
저자 직책 및 역할

• 서미혜(국립원예특작과학원 원예특작환경과) | Mi Hye Seo (Horticultural and herbal crop environment division, National Institute of Horticultural and Herbal Science, RDA, Wanju 55365, Korea)
• 서경혜(국립원예특작과학원 원예작물부 화훼과) | Kyung Hye Seo (Floriculture Research Division, National Institute of Horticultural and Herbal Science, RDA, Wanju 55365, Korea)
• 최경산(국립원예특작과학원 원예특작환경과) | Kyung San Choi (Horticultural and herbal crop environment division, National Institute of Horticultural and Herbal Science, RDA, Wanju 55365, Korea)
• 이선영(국립원예특작과학원 원예특작환경과) | Sun-Young Lee (Horticultural and herbal crop environment division, National Institute of Horticultural and Herbal Science, RDA, Wanju 55365, Korea)
• 윤정범(국립원예특작과학원 원예특작환경과) | Jung Beom Yoon (Horticultural and herbal crop environment division, National Institute of Horticultural and Herbal Science, RDA, Wanju 55365, Korea)
• 박정준(경상국립대학교 식물의학과, 경상국립대학교 농업생명과학연구원) | Jung-Joon Park (Department of Plant Medicine, Gyeongsang National University, Jinju 52828, Korea, Institute of Agriculture and Life Science, Gyeongsang National University, Jinju 52828, Korea) Corresponding author