Evaluation of bioformulation from Bacillus sp for the management of brown spot disease caused by Neoscytalidium dimidiatum  in dragon fruit

            The study was conducted in  nethouse condition of College of Agriculture,  Can Tho University  and field condition at Chau Thanh District, Dong Thap Province to assess the control effect of bioformulation from Bacillus-B61 for brown spot disease caused by Neoscytalidium dimidiatum on dragon fruit. In net house conditions, the bioformulation from 10⁶-10⁸ cfu/ml with two sprays (before and after pathogen inoculation) had good control effect on brown spot disease at 3, 5, 7, 10 days after pathogen inoculation. Under field conditions, the formulation (10⁶ cfu/ml), effectively inhibits the development of the brown spot fungal pathogen, reach the same effect as treated by Nativo 750WG at 7, 10 and 14 days after treatments.

Keywords: Bacillus, bioformulation, brown spot disease, dragon fruit, Neoscytalidium dimidiatum