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김아형(A-Hyeong Kim),연초롱(Cho-Long Yeon),김주형(Joo-Hyung Kim),김흥태(Heung-Tae Kim) 한국농약과학회 2012 농약과학회지 Vol.16 No.2
Pepper seedlings of 6-leaf stage were inoculated with cell suspension of Xanthomonas euvesicatoria 1523 7 days after the application of Bion-M by soil-drenching. Disease severity in the treatment with 20 μg mL<SUP>-1</SUP> of acibenzolar-S-methyl, with which Bion-M was composed, was 19%, whereas that of the untreated control was 75%. The resulting control value of acibenzolar-S-methyl was calaulated as much as 75%. The control value of acibenzolar-S-methyl was dependent with the applied concentrations and ranged 29% to 49% at 4.0 and 0.8 μg mL<SUP>-1</SUP> of acibenzolar-S-methyl, respectively. Phytotoxicity was observed at 20 μg mL<SUP>-1</SUP> , as lower leaves became to be yellowed and defoliated. The cell density of inoculum suspension of X. euvesicatoria 1523 affected the control value of acibenzolar-S-methyl. With optical density (O.D.) of 0.5 the control value of 4.0 μg mL<SUP>-1</SUP> of acibenzolar-S-methyl was 86%. However, the control value improved as high as 98% at the O.D. value of 0.1. The control value was 75% in adult plant of pepper, when acibenzolar- S-methyl was treated by soil-drenching 7 days before inoculation with cell suspension of X. euvesicatoria 1523. The control effect of acibenzolar-S-methyl on pepper bacterial spot was obtained in pepper field, showing that the control value at 10.0 μg mL<SUP>-1</SUP> was 71%.
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