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http://dx.doi.org/10.5423/RPD.2005.11.1.043

Control Efficacy of Flusulfamide GR on Chinese Cabbage Clubroot Caused by Plasmodiophora brassicae  

Zhang, Xuan-Zhe (Department of Applied Plant Science, Kangnung National University)
Lee, Sun-Uk (Young Il Chemical Co., LTD.)
Kim, Jeom-Soon (Lab. of Crop Protection, National Institute of Highland Agriculture)
Yoon, Yeo-Sun (Department of Applied Plant Science, Kangnung National University)
Choi, Geun-Suk (Department of Applied Plant Science, Kangnung National University)
Kim, Hak-Ki (Department of Applied Plant Science, Kangnung National University)
Kim, Byung-Sup (Department of Applied Plant Science, Kangnung National University)
Publication Information
Research in Plant Disease / v.11, no.1, 2005 , pp. 43-47 More about this Journal
Abstract
To investigate control efficacy of flusulfamide GR (granule) on Chinese cabbage clubroot caused by Plasmodiophora brassicae, experiment was accomplished in field located in Gangneungshi alpine area contaminated by P. brassicae. Flusulfamide GR provided control value of 84.6% and that was statistically significant difference from standard fungicides containing untreated control. To investigate ratio of reduction of resting spore according to fungicide treatment, soil of Chinese cabbage field before and after fungicide treatment were sampled and investigated density of resting spore. Resting spore density was not uniform in soil before fungicide treatment. Therefore, to investigate control efficacy of fungicide against clubroot, investigation on resting spore density was conducted before experiment and reflected in experimental design. Flusulfamide GR and DP (dust powder) provided 64.2% and 63.7% of reduction of resting spore on field soil after fungicide treatments. This result indicated that control efficacy of the fungicides was correlated with reduction of resting spore of P. brassicae. The increasing rate in fresh weight of above-ground part of Chinese cabbage by flusulfamide DP and GR, fluazinam DP and trifloxystrobin SC (suspension concentrate) was 14.3%, 13.0%, 13.8% and 3.8%, respectively. From above result, flusulmide GR have outstanding control efficacy against clubroot of Chinese cabbage and is effectively decreasing of resting spore density in soil.
Keywords
Clubroot; Flusulfamide GR; Plasmodiophora brassicae; Resting spore;
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