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고추 역병에 대한 Copper hydroxide의 방제 특성
김선보(SunBo Kim),민지영(Gi Young Min),김주형(Jooheong Kim),신명욱(Myeongwook Shin),김명기(MyeongKi Kim),연초롱(ChoRhong Yeon),김흥태(Heung Tae Kim) 한국농약과학회 2007 농약과학회지 Vol.11 No.3
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 EC50 value by 0.6 and 0.3 ㎍ mL?¹. With 1,040 ㎍ 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 ㎖ 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.