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Abstract
The effects of Xanthomonas otyzae pv. olyzae, Erwinia sp. and Phylloplane bacteria were assessed and compared with rice leaf clipping and without leaf clipping practices for induction of bacterial leaf blight (BLB) resistance and yield in two rice cultivars, Binasail and Binadhan-4. The rice seedlings or plants pre inoculated with bacterial inocula at seedling, early tillering and maximum tillering stages along with or without leaf clipping plants were finally inoculated with X. otyzae pv. oryzae at maximum tillering or at flag leaf stages of crop growth. The results revealed that all the tested bacterial inocula and rice leaf clipping practice significantly induced BLB resistance and reduced the severity of the disease in both the rice cultivars. The highest grain yield was obtained in plants where leaf clipping was done at early or maximum tillering stages of plant growth. The plants pre-inoculated with BLB pathogen Xoo, Erwinia sp. and Phylloplane bacteria reduced grain yields of rice which need further study using more bacterial inocula and rice cultivars.