Research in Plant Disease 2005;11(2):179-184.
Published online December 30, 2005.
Nectria haematococca에 의한 착색단고추 줄기 및 과실썩음병의 약제방제
지형진, 심창기, 류경열, 남기웅
Effective Fungicides on Control of Stem and Root Rot of Paprika Caused by Nectria haematococca
Hyeong Jin Jee, Chang Ki Shim, Kyoung Yul Ryu, Ki Woong Nam
A previous study reported that the stem and root rot of paprika (Capsicum annum L. var. grossum) caused by Nectria haematococca became a threat to safe cultivation of the plant in the country. However, no strategies for control the disease have been suggested. In this study, fungicides registered for pepper were screened to evaluate their control effects on the disease. Among fungicides tested, prochloraz manganase complex completely suppressed mycelial growth of the pathogen at 10 ppm a.i. tebuconazole, benomyl, and carbendazim· kasugamycin also effectively inhibited mycelial growth of the fungus. However, kresoxim-methyl and trifloxystrobin did not suppress mycelial growth but significantly suppressed conidial germination of the fungus. Azoxystrobin, benomyl, prochloraz, tebuconazol, and carbendazim · kasugamycin were also effective to retard conidial germination. In vivo tests, tebuconazole strongly inhibited the plant growth even at 16,000x (15.6 ppm a.i.), while others did not induce chemical injury at 4,000× or 8,000× when drenched into a rockwool cube. In a greenhouse test, prochloraz manganase complex at 125 ppm a.i. (4,000×) showed highest control value by 89.9%. Other fungicides thiophanate-methylthiram, axozystrobin, trifloxystrobin, and benomyl presented 60-80% control value in the hydroponic cultivation system. However, application time and interval remained to be investigated for identify maximum residue limit.
Key Words: Control, Fungicide, Nectria haematococca, Paprika, Stem and fruit rot

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