Field control efficacy of mefentrifluconazole·pyraclostrobin 400 g/L SC against apple Marssonina leaf blotch
[Aims]This study aims to evaluate the control effect of a new fungicide mefentrifluconazole·pyraclostrobin 400 g/L SC on apple Marssonina leaf blotch.[Methods]Two consecutive years of field efficacy trials were conducted in Qixia,Shandong Province.[Results]The treatments of mefentrifluconazole·pyraclostrobin 400 g/L SC at 225,300,360 g a.i./ha showed control efficacy above 92.38%on day 14 after the last application,and it was safe to treated apple trees.[Conclusions]Mefentrifluconazole·pyraclostrobin 400 g/L SC can effectively prevent and control apple Marssonina leaf blotch,providing a basis for the promotion and application of new fungicide.