India is the second largest producer of rice in the world after China. It is grown on about one-fourth of the total cropped area and provides food to about half of the country's population.
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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.
The bacterial Leaf Blight of rice (BLB) can be controlled by following applications: more than 90 % of the infection can be controlled by treatment of seeds with antibiotics. It is done by soaking them in a mixture of 0.025% solution of Agrimyein and 0.05% Ceresan for 12 hours followed by hot water treatment of seeds for 30 hours or seedlings for 3 minutes at 52-54° C.
This disease is caused by the bacterium Xanthomonas oryzae. The symptoms of the disease are distinguished in three phases. Blighting phase- Straw to yellow coloured strips with wavy margin appear on leaves followed by drying and twisting of tips.
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.