Evaluation of the Indoor Toxicity and Field Protection Effect of Six Fungicides on the Anthracnose of Ginger
In order to screen out efficient fungicides for the prevention and control of anthracnose of ginger,the toxicity and control effects of six fungicides on anthracnose of ginger were compared through two methods of indoor toxicity test and field efficacy evaluation.The indoor toxicity test results showed that the antifungal activities of feniconazole and prochloraz were relatively high,with EC50 values of 4.058 7 μg/mL,4.418 0 μg/mL,respectively,pyraclostrobin had low antifungal activity with EC50＞40 μg/mL,azoxystrobin and methylthiophanate had the worst antifungal activity,both with EC50＞100 μg/mL.The field test results showed that 10%feniconazole water dispersible granules(6.0 g of effective ingredient per 667 m2),45%prochloraz water emulsion(30.0 g of effective ingredient 667 m2)and 25%pyraclostrobin suspension(7.5 g of effective ingredient per 667 m2)had relatively good control effects with 93.48%,87.71%and 89.01%,respectively,which significantly higher than that of control.However,the control effects of 25%azoxystrobin suspension and 50%methylthiophanate wettable powder were poor.Therefore,based on the results of indoor toxicity tests and field trials,it was recommended to alternatively use of 10%feniconazole water dispersible granules(6.0 g of effective ingredient per 667 m2),25%pyraclostrobin suspension(7.5 g of effective ingredient per 667 m2)and 45%prochloraz water emulsion(30.0 g of effective ingredient per 667 m2)to prevent anthracnose of ginger.
NETL
NSTL
万方数据
维普
