The experiment was conducted in the field under natural epiphytotic condition to evaluate the performances of formulated biopesticides comprising rhizopheric fluorescent Pseudomonads in aromatic rice plants cv. Kalizira. Root dipping of seedlings followed by foliar application with bacterial suspension at three stages of rice plants was done in order to reduce incidence and severity of blast disease. Disease incidence and severity were recorded at 30, 60 and 90 days after transplanting (DAT). Among the treatments application of Pseudomonas fluorescens-8 (BdPf-8) formulated in talc (T11) and bentonite (T12) on the foliage significantly increased the vegetative, yield parameters, BCR and reduced blast incidence and severity over control at every growth stage. Treatments T11 (10% BdPf-8 Talc) and T12 (10% BdPf-8 Bentonite) also gave the highest yield 2.56 t/ha and 2.50 t/ha with highest BCR 1.88 and 1.84 respectively. So, these findings reveal that biopesticide formulated with fluorescent Pseudomonads (BdPf-8) in talc and bentonite can be applied in the field for effective management of blast disease in aromatic rice.
Key words: Blast, aromatic rice, management, Pseudomonas fluorescens (Pf), bio-pesticide
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