Synergistic Action of Commercially Available Fungicides for Protecting Wheat from Common Root Rot Caused by Bipolaris sorokiniana in China

Wheat (Triticum aestivum) common root rot (CRR) caused by predominant fungal pathogen Bipolaris sorokiniana occurs in all wheat-growing regions worldwide and is difficult to control. In this study, the efficacy of eight fungicides against Bipolaris sorokiniana was examined in in vitro assays, and we...

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Veröffentlicht in:Plant disease. - 1997. - 105(2021), 3 vom: 30. März, Seite 667-674
1. Verfasser: Wei, Xuejun (VerfasserIn)
Weitere Verfasser: Xu, Zihang, Zhang, Na, Yang, Wenxiang, Liu, Daqun, Ma, Lisong
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2021
Zugriff auf das übergeordnete Werk:Plant disease
Schlagworte:Journal Article Triticum aestivum common root rot efficacy fungicides synergistic action Fungicides, Industrial
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520 |a Wheat (Triticum aestivum) common root rot (CRR) caused by predominant fungal pathogen Bipolaris sorokiniana occurs in all wheat-growing regions worldwide and is difficult to control. In this study, the efficacy of eight fungicides against Bipolaris sorokiniana was examined in in vitro assays, and we determined that the combined application of two fungicides significantly inhibits the growth of fungal mycelium. Half of the maximal effective concentration of a mixture containing fludioxonil and difenoconazole in the ratio 1:4 was 0.0372 mg/liter, and the cotoxicity coefficient was 160.14. Under an environmentally controlled pot assay, seed treatment with the mixture of fludioxonil and difenoconazole in the 1:4 ratio demonstrated the best control efficiency at seedling and adult stages, respectively. The best synergistic mixture on seed treatment was assessed in a 2-year field experiment at Hebei, China. The best control efficacy achieved at the seedling and adult stages was 82.65% and 68.48%, respectively. Overall, the in vitro mycelial growth inhibition assay and controlled-environment and field studies indicated that the synergistic action of a mixture of fludioxonil and difenoconazole provides effective control against wheat CRR. These findings highlight the potential application of the fungicide combination for controlling CRR and reducing the selection pressure on fungal pathogens by lessening the use of various fungicides in the field 
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700 1 |a Xu, Zihang  |e verfasserin  |4 aut 
700 1 |a Zhang, Na  |e verfasserin  |4 aut 
700 1 |a Yang, Wenxiang  |e verfasserin  |4 aut 
700 1 |a Liu, Daqun  |e verfasserin  |4 aut 
700 1 |a Ma, Lisong  |e verfasserin  |4 aut 
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