Home > Crop Diseases > Sheathe Blight of Paddy

Sheathe Blight of Paddy

Sheath blight of Paddy:

causative Agent:  Rhizoctonia solani


  • Sheath blight is a fungal disease, more common in rainy season than in dry season in the topics.
  • This disease is problematic in areas where irrigation facilities are abundant.
  • Due to blighting of the leaf sheaths, it is commonly called as sheath blight.
Alternate hosts: Among the plants recorded as hosts are, sugarcane, bean, soybean, tomato, egg plant, tobacco, water hyacinth , hyacinth bean and green gram

Disease Symptoms:

  • Appearance of one or more relatively large, oblong or irregularly elongated lesions on the leaf sheath; in advanced stages center of the lesion becomes bleached with an irregular purple brown border.
  •  Initially these lesions are white in colour later it turns to dark brown.
  • At severe condition drying of leaves.

Chemical control

  • In these days, Validamycin, Hexaconazole, Hexa+ captan, Propiconazole are good restrictive technicals against Sheathe Blight of Paddy. Follow Doses and recommendations as per crop scientist.
  • Seed treatment with carendizm 2.0g/kg of seeds.
  • Spraying fungicides of 2.5g carbendazim 50WP (540g/acre) or 2.5 gm 0f mancozeb 75WP OR 2ml hexaconozole in 1 liter of water.
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