Bioformulation Development of Bacillus velezensis Strain N1 to Control Rice Bacterial Leaf Blight

Bacterial leaf blight is a serious disease of rice caused by Xanthomonas oryzae pv. (Xoo). The objective this study was to develop bioformulation Bacillus velezensis strain N1 using microencapsulation techniques through spray drying and then evaluate its performance in controlling bacterial under greenhouse conditions. Three formulations with different main carrier were studied the viability after drying, moisture content, characteristic formulation powder scanning electron microscope storage stability examined. results showed that 3 (10 % skimmed milk, 20 maltodextrin, 0.06 sodium alginate 5 tapioca starch) had highest antagonistic 1.24×107 CFU/g. Formulation 2 1.44×106 CFU/g lowest reduction 0.61 Log at room temperature for months. Moisture content each less than 4 %. Among bacteria against Xoo, formula able control index (45.87 %). All indicated can be an effective antagonist could potentially used more successful blight.
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