Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2019, Vol. 35 ›› Issue (9): 143-148.doi: 10.11924/j.issn.1000-6850.casb17110081

Special Issue: 园艺

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Toxicity Test of Six Fungicides on Fusarium Oxysporum Infecting Cucumber

  

  • Received:2017-11-21 Revised:2019-03-18 Accepted:2018-02-24 Online:2019-03-26 Published:2019-03-26

Abstract: The aim of this studyis to identify the inhibitory effects of six fungicides by the growth rate method on toxic culture medium. The colony diameterwasused as observation index. The colony diameters of the control group and the treatment group were detected, and the inhibitory effects offungicides on Fusarium Oxysporum were measured by inhibition ratio. The results showed that72 hours after medication, propiconazole had the maximum toxicity index and the best inhibition effect onFusarium oxysporum with EC50 value of 0.9039 mg/L, followed by mancozeb and isopeptide, with the EC50 value of 2.8939 mg/L and 6.8186 mg/L, respectively. Kresoxim- methyl and pyrimethanil had normal effects,with EC50 value of 29.3951 mg/L and 30.4126 mg/L, respectively. Difenoconazole had the minimumtoxicity index and the least effect, with EC50 value of 143.2943 mg/L. In conclusion, propiconazole hasthe best inhibition effect.