Identify leaf blast disease in paddy and adopt preventive measures soon

Identify leaf blast disease in paddy and adopt preventive measures soon
  • Rice blast is one of the most destructive diseases of rice.

  • A leaf blast infection can kill seedlings or plants up to the tillering stage.

  • At later growth stages, a severe leaf blast infection reduces leaf area for grain fill, reducing grain yield.

  • Initial symptoms appear as white to grey-green lesions or spots, with dark green borders.

  • Older lesions on the leaves are elliptical or spindle-shaped and whitish to grey centres with red to brownish or necrotic borders.

Control Measures

  • Treat the seed with 2.5 g/kg Carmanova (Carbendazim 12%+ Mancozeb 63% WP)

  • Remove and burn the infected plant debris in the soil after deep summer ploughing during June-July.

  • Apply increased doses of potash with a balanced dose of nitrogenous and phosphatic fertilizers.

  • Apply heavy doses of farm yard manure or other organic manures at 100t/ha.

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