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http://dx.doi.org/10.5423/RPD.2005.11.2.179

Effective Fungicides on Control of Stem and Root Rot of Paprika Caused by Nectria haematococca  

Jee Hyeong-Jin (Organic farming Technology Division, National Institute of Agricultural Science and Technology, Rural Development Administration)
Shim Chang-Ki (Organic farming Technology Division, National Institute of Agricultural Science and Technology, Rural Development Administration)
Ryu Kyoung-Yul (Organic farming Technology Division, National Institute of Agricultural Science and Technology, Rural Development Administration)
Nam Ki-Woong (Department of Horticultural Science, Hankyong National University)
Publication Information
Research in Plant Disease / v.11, no.2, 2005 , pp. 179-184 More about this Journal
Abstract
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 com pletely suppressed mycelial growth of the pathogen at 10 ppm a.i. tebuconazole, benomyl, and carbendazim $\cdot$kasugamycin also effectively inhibited mycelial growth of the fungus. However, kresoxim-methyl and triflox ystrobin did not suppress mycelial growth but significantly suppressed conidial germination of the fungus. Azoxystrobin, benomyl, prochloraz, tebuconazol, and carbendazim$\cdot$ 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 4,000x or 8,000x when drenched into a rockwool cube. In a greenhouse test, prochloraz manganase complex at 125 ppm a.i. (4,000x) 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.
Keywords
Control; Fungicide; Nectria haematococca; Paprika; Stem and fruit rot;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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