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Characteristics and control activity of copper hydroxide against pepper Phytophthora blight caused by Phytophthora capsici  

Kim, Sun-Bo (Department of Plant Medicine, College of Agriculture, Life and Environment Science, Chungbuk National University)
Min, Gi-Young (Department of Plant Medicine, College of Agriculture, Life and Environment Science, Chungbuk National University)
Kim, Joo-Heong (Department of Plant Medicine, College of Agriculture, Life and Environment Science, Chungbuk National University)
Shin, Myeong-Wook (Department of Plant Medicine, College of Agriculture, Life and Environment Science, Chungbuk National University)
Kim, Myeong-Ki (Department of Plant Medicine, College of Agriculture, Life and Environment Science, Chungbuk National University)
Yeon, Cho-Rhong (Department of Plant Medicine, College of Agriculture, Life and Environment Science, Chungbuk National University)
Kim, Heung-Tae (Department of Plant Medicine, College of Agriculture, Life and Environment Science, Chungbuk National University)
Publication Information
The Korean Journal of Pesticide Science / v.11, no.3, 2007 , pp. 186-193 More about this Journal
Abstract
Characteristics and control activity of copper hydroxide against pepper phytophthora blight caused by Phytophthora capsici were investigated in a greenhouse and a pepper field Copper hydroxide strongly inhibited the germination of zoosporangia and zoospores of P. capsici JHCS 2-5, showing $EC_{50}$ value by 0.6 and 0.3 ${\mu}g\;mL^{-1}$. With 1,040 ${\mu}g\;mL^{-1}$ of copper hydroxide in a greenhouse it showed 80% of the control value by soil-drenching application, while 16% by leaf-spraying. However, when it was treated enough to runoff to soil by leaf-spraying application with 50 ml per a pepper plant, it controlled a pepper phytophthora blight by 94.6 % of control value. Copper hydroxide showed a high protective activity at 1 and 3 days before application, while no curative activity. In a field it showed a high activity of 91%, when pepper plants were treated with copper hydorxide 4 times with a intervals of 10 days.
Keywords
pepper Phytophthora blight; copper hydroxide; soil-drenching treatment;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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