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Bacterial leaf blight management in organic basmati rice

Bacterial blight

Causal organism: Xanthomonas oryzae cv. Oryzal

  • High temperature upto 30°C favours the disease development while it subsides at temperature 20°C.
  • Lesions enlarged and leave dies faster at higher temperature.
  • High rates of nitrogen fertilizer favour the incidence of disease.
  • Phosphorus and potassium deficiency and excess silica and magnesium also increase disease incidence.

Bacterial leaf blight


  • Use seed from disease free crop.
  • Drain away the water from fields as frequently as possible.
  • Grow tolerant varieties such as IR-20, IR-54, IR-64, Pusa2-21, Ajaya, Asha and Daya.
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