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살균제 chlorothalonil에 대한 고추 탄저병균의 감수성 변화
김준태(Joon Tae Kim),이경희(Kyeong Hee Lee),민지영(Ji Young Min),조인준(In Joon Cho),강범관(Beum Kwan Kang),박성우(Seong Woo Park),Nguyen Van Bach,김윤식(Yun-Sik Kim),홍성택(Hong Seong Taek),노창우(Chang Woo Rho),김흥태(Heung Tae 한국농약과학회 2004 농약과학회지 Vol.8 No.3
Monitoring for the sensitivity of Colletotrichum spp. causing red-pepper anthracnose to chlorothalonil was conducted by the agar dilution method, which were isolated from infected pepper fruits in 1999 and 2002. Among the isolates in 1999 or 2002, their sensitivity to fungicide was fluctuated. Investigating the inhibitory effect of 500 ㎍/㎖ of chlorothalonil on the mycelial growth of Colletotrichum isolates isolated from the infected red-pepper fruits in 1999, the frequency of isolates was 23.4%, which showed 100% of inhibitory effect on mycelial growth, and 29.7% showing below 60%. Isolates in 2002, however, showed 34.6% and 14.8% of inhibitory effect on PDAs including the same concentration of fungicide, respectively, These results showed that the sensitivity of Colletotrichum isolates in 1999 was inferior to that in 2002. According to the sampling region, isolation frequency among isolates in 2002 showing less MIC rather than 1999 was increased in Kyunggi, Kangwon, Kyungbuk and Kyungnam while the frequency of resistant isolates was done in Chungnam, Chungbuk, Cheonnam and Cheonbuk. Fungicide monitoring results in this report will be of use on controlling the anthracnose in each region cultivating red-pepper.