The difference between Blast of Rice and Bligh of Rice are blast of rice (rotton neck) is a fungal disease caused by Pyricularia oryzae whereas bacterial Leaf Blight (BLB) is a bacterial disease caused by Xanthomonas oryzae.
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Blast of rice is controlled by three primary approaches. (i) Cultural practices- Field sanitation, removal of weeds from the field and early plantation shows less disease incidence.
Blast of rice is the most widespread disease of rice caused by the fungus Pyricularia oryzae. The symptoms of the disease first appear on leaves as small bluish flecks and gradually the spot becomes ash-coloured at center with brown margin.