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Effect of epoxiconazole on rice blast and rice grain yield in China

文献类型： 外文期刊

作者： Chen, Yu 1 ; Yao, Jian 2 ; Wang, Wen-Xiang 1 ; Gao, Tong-Chun 1 ; Yang, Xue 1 ; Zhang, Ai-Fang 1 ;

作者机构： 1.Anhui Acad Agr Sci, Inst Plant Protect & Agroprod Safety, Hefei 230031, Peoples R China

2.Anhui Entry Exit Inspect & Quarantine Bur, Hefei 230022, Peoples R China

3.Minist Agr, Sci Observing & Expt Stn Crop Pests Hefei, Hefei, Peoples R China

关键词： Magnaporthe oryzae;Demethylation inhibitor;Epoxiconazole;Baseline sensitivity;Cross resistance

期刊名称：EUROPEAN JOURNAL OF PLANT PATHOLOGY （ 影响因子：1.907； 五年影响因子：2.022 ）

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收录情况： SCI

摘要： Sensitivity to epoxiconazole of 90 single-spore isolates of Magnaporthe oryzae was determined. The EC50 values for epoxiconazole in inhibiting mycelial growth of the 90 M. oryzae isolates were 0.11-0.86 mu g/ml, with an average EC50 value of 0.260 +/- 0.082 mu g/ml. There was no correlation between sensitivity to epoxiconazole and sensitivity to carbendazim or iprobenfos. In protective and curative tests, epoxiconazole applied at 200 mu g/ml provided over 70 % control efficacy, while tricyclazole exhibited better protective than curative activity. The results of four field trials performed in 2010 and 2011 at two sites showed that epoxiconazole at 112.5 g a.i/ha provided over 75 % control efficacy, which was similar to tricyclazole with 300 g a.i./ha and better than carbendazim with 562.5 g a.i./ha.

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