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[Objective]The paper was to screen fungicides with strong antifungal activities against Fusarium oxysporum Schlecht,and to provide a theoretical basis for controlling root-rot of Rhodiola sachalinensis A. Bor. [Method]Using mycelial growth rate method,the indoor antifungal activities of eight fungicides against F. oxysporum were studied. [Result]Eight fungicides at different concentrations performed different antifungal activities. Toxicity test results showed that the EC_(50) value of Difenoconazole was the smallest( 4. 267 4 mg/L),followed by Mancozeb( 6. 952 5 mg/L),and the EC_(50) of Thiram,Captan and Procymidone were relatively small from 25 to 50 mg/L. [Conclusion]Among eight fungicides,Difenoconazole had the best antifungal effect against F. oxysporum,while Mancozeb,Thiram,Captan and Procymidone had good control effects as well.
[Objective] The paper was to screen fungicides with strong antifungal activities against Fusarium oxysporum Schlecht, and to provide a theoretical basis for controlling root-rot of Rhodiola sachalinensis A. Bor. [Method] Using mycelial growth rate method, the indoor antifungal activities of Eight fungicides against F. oxysporum were studied. [Result] Eight fungicides at different concentrations performed different antifungal activities. Toxicity test results showed that the EC_ (50) value of Difenoconazole was the smallest (4. 267 4 mg / L), followed by Mancozeb (6. 952 5 mg / L), and the EC 50 (50) of Thiram, Captan and Procymidone were relatively small from 25 to 50 mg / L. [Conclusion] Among eight fungicides, Difenoconazole had the best antifungal effect against F. oxysporum, while Mancozeb, Thiram, Captan and Procymidone had good control effects as well.