Cause: due to the bacteria Xanthomonas 0ryzae pv. Oryzae causes harm. When the humidity is high, the weather is cloudy, rainy and stormy season very severe disease. The disease thrives and spreads quickly in the temperature 260C-300C, the high air humidity from 90% or over. Leaf blight disease-causing bacteria can live in water 15-38 days, can survive in seeds 7-8, and straw in 3-4 months
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