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《Biological Disaster Science》 2018-04
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Field Trial Efficacy of Five Fungicides Against Potato Late Blight

LIU Jie;LING Fei;FENG Ye-hong;SUN Liang;ZHAO Nan;WANG Peng;Yantai Academy of Agricultural Sciences;Shandong Ocean Culture Tourism Development Co., Ltd;Agricultural Technology Extension Station of Laizhou;  
In order to screen safe and efficient fungicides against potato late blight, field trials were conducted to study the efficacy of 5 fungicides, such as 20% flumorph fluazinam, against potato late blight. The results showed that the control efficacy of 20% flumorph fluazinam with a dosage of 360 g a.i./hm~2, 687.5 g/L fluopicolide·propamocarb hydrochloride suspension concentrate with a dosage of 1 030 g a.i./hm~2, and 500 g/L fluazinam with a dosage of 240 g a.i./hm~2 against potato late blight were all above 80%. While 50%Dimethomorph wettable powder with a dosage of 225 g a.i./hm~2, and 80% mancozeb wettable powder with a dosage of 2 160 g a.i./hm~2 also had good control effects. There was no harm or other adverse reaction to the potato plants under the test dosage. So it was proposed in the paper that, based on the situation of potato planting, climate conditions, and the use of fungicides in different region, appropriate fungicides should be selected for the prevention and treatment.
【CateGory Index】: S435.32
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