Cokorda Javandira, Luqman Qurata Aini, Arifin Noor Sugiharto, Abdul Latief Abadi
One of new biotic constraints in corn production in Indonesia is leaf blight disease caused by Pantoea sp. which is needed to be controlled. The purpose of this research was to study the potential of Bacillus sp. and Pseudomonas sp. as biological control agents against corn leaf blight caused by Pantoea sp. In this study, several assays were conducted, including antagonistics assays on agar plate, characterization of the type of antibiosis produced by antagonists and pot experiment in controlling leaf blight disease (Pantoea sp.) using by Bacillus sp. and Pseudomonas sp. The results showed that all bacterial strains of Bacillus sp. and Pseudomonas sp. have potential in inhibiting the growth of Pantoea sp. by showing the clear zone on the agar plate. The antibiosis types are bactericide or bacteriostatic. On pot experiment all bacterial strains showed the reduction of the disease incidence at the same level compared to streptomycin suphate. All bacterial strains as well as bactericide reduced the disease incidence at 18-24% compared to control (aquades treatment only). The results suggest that all bacterial strains are potential as biological control agent against leaf blight disease on corn leaf caused by Pantoea sp.
Brawijaya University, Malang 65145, East Java, Jl. Veteran, Indonesia; Maize Research Center, Brawijaya University, Malang 65145, East Java, Jl. Veteran, Indonesia
