Screening of fungicides against apple tree valsa canker
In order to screen out the proper fungicides against apple tree valsa canker,22 fungicides were used to test bacteriostatic rate under different concentration.The results showed that bacteriostatic rate was 100% when the concentration of Paenibacillus polymyxa and Bacillus subtilis was 18 uL/100 mL,and the suit-able concentration of polyoxins,propiconazole,tebuconazole,prochloraz and difenoconazole was 22.5 mg/(100 mL),60 μL/100 mL,75 μL/(100 mL),75 μL/(100 mL)and 60 mg/100mL respectively.
apple tree valsa cankerfungicidesbiological agentsbacteriostatic rate