Abstract:

To effectively prevent and control banana leaf spot disease, and screen fungicides with good control efficacy, the authors conducted field trials against banana leaf spot disease in 2018 and 2019, using 400 g/L mefentrifluconazole·pyraclostrobin as a test agent. The stem-leaf spraying was carried out at the early stage of banana leaf spot disease, and the average control effect of 133.3 mg/kg of mefentrifluconazole·pyraclostrobin after 3 times was 74.08% and 74.54% in 2018 and 2019 year, respectively, which was significantly better than that of the 133.3 mg/kg of 400 g/L mefentrifluconazole, 166.7 mg/kg of pyraclostrobin and propiconazole in the control agent. And the average control effect of 200 mg/kg of 400 g/L mefentrifluconazole·pyraclostrobin after 3 times reached 79.68% and 79.93%. The results indicate that 400 g/L mefentrifluconazole·pyraclostrobin has a good effect on the prevention and treatment of banana leaf spot disease, and is an excellent fungicide for popularization and application in banana production areas.

Key words: banana, banana sigatoka disease, mefentrifluconazole·pyraclostrobin, efficacy evaluation