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

文献类型: 外文期刊

第一作者: Chen, Yu

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

作者机构:

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 )

ISSN:

年卷期:

页码:

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.

分类号: S432.1

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