• Title, Summary, Keyword: Erwinia carotovora subsp. atroseptic

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Chemical control of potato Blackleg disease caused by Erwinia carotovora subsp. atroseptica in Korea (감자 흑각병원균 Erwinia carotovora subsp. atroseptica의 화학적 방제)

  • Yu, Yong-Man;Zhu, Yong-zhe;Bae, Hu-Nam;Kim, Song-Mum;Lim, Chun-Keum;Hur, Jang-Hyun
    • The Korean Journal of Pesticide Science
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    • v.7 no.1
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    • pp.12-17
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    • 2003
  • Potato blackleg disease caused by Erwinia carotovora subsp. atroseptica (Eca) has been a serious problem in Korea. Bactericidal activities of twelve bactericides including antibiotics, copper compounds and oxolinic acid were examined in vitro. Streptomycin, streptomycin sulfate, and oxolinic acid effectively controlled the pathogen at 0.02 mM. However, the pathogen developed resistance to the applied bactericides after 72 hours of incubation. Activity of copper compounds such as copper hydroxide, copper oxide and copper sulfate was lower than that of antibiotics. However, the pathogen did not develop resistant to them. Combinations of streptomycin (0.016 mM, 9.3 ppm) + copper oxide (1.2 mM, 171.6 ppm)/copper hydroxide (1.5 mM, 146.3 ppm); streptomycin sulfate (0.005 mM, 7.0 ppm) + copper oxide (1.2 mM, 171.6ppm)/copper hydroxide (1.5 mM, 146.3 ppm) were found to be effective for the control of E. carotovora subsp. atroseptica.