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국내 사과원에서 분리된 Botryosphaeria spp.의 Fluazinam 살균제에 대한 감수성 기준 설정
임광재(Gwang-Jae Lim),최준우(Jun-Woo Choi),김해담(Hae-Dam Kim),남영주(Young Ju Nam),이하경(Ha-Kyoung Lee),이승열(Seung-Yeol Lee),정희영(Hee-Young Jung) 한국농약과학회 2024 농약과학회지 Vol.28 No.4
From 2005 to 2024, a total of 324 Botryosphaeria spp. isolates were collected from apple orchards in various regions to investigate their sensitivity to fluazinam. Phylogenetic analyses revealed that Botryosphaeria sinensis to be dominant, with the Botryosphaeria kuwatsukai also identified. The EC<sub>50 </sub>values were calculated based on the mycelial inhibition rate on fluazinam amended media, showing a range of 0.06 to 0.59 g/mL, with an average of 0.09 μg/mL for all strains. When comparing the mean and distribution of EC<sub>50</sub> values for strains isolated from 2005 to 2019 with those isolated from 2022 to 2024, significant differences were not found. Furthermore, no significant differences in sensitivity were observed when comparing groups based on pathogen species or region of isolation. Additionally, the inoculation results on the fluazinam-treated apple fruits also showed no statistical differences in control efficacy between less sensitive and sensitive isolates. Based on these findings, all strains of Botryosphaeria spp. isolated from various regions were found to be sensitive to fluazinam. The baseline sensitivity of Botryosphaeria spp. to fluazinam established in this study will serve as a reference for future sensitivity evaluation and regular resistance monitoring in Korea.
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