Mr.Sompol hundred words of Agriculture, Chiang Mai, said the symptoms of blight, farmers can be noted that the leaves are bruised in the initial phase. Later it was found scars, brown spots resembling eyes middle lesions with gray lesions of various sizes, the incision is extended contact spread throughout the area leaves
causes a severe outbreak is that farmers grow rice variety Khao Dok Mali 105, which are bred. are more susceptible to burns. A biological or chemical fertilizer, especially urea at a high rate. The right environment to disease is the cloud cover is. Period lasting several days with a drizzle of rice leaves more than 10 hour night temperatures relatively cool (20-30o C), especially in paddy fields. No flooding Chance of dew during the night, making for a long time.
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