Sugarcane Rust

Sugarcane Rust: Puccinia erianthi

  • The earliest symptoms are small, elongated yellowish spots that are visible on both leaf surfaces.
  • The spots increase in length, turn brown to orange-brown or red-brown in colour, which coalesced and formed large, irregular necrotic areas, thus it shows the rusty appearance of a leaf.
  • This eventually resulted in the premature death of the leaves.
  • Uredinia are elongate, reddish-brown, with capitate, hyaline to light brown paraphyses.
  • Urediniospores are thick-walled, orange-brown, obovoid, measuring 26-34 x 16-20 µm. The urediniospore surface is echinulate with 4-5 equatorial pores.
  • Teliospores are dark brown and measure 30-43 x 17-23 µm, clavate, two-celled and slightly constricted at the septum.


Management strategies             
Cultural method:
  • The best means of control for sugarcane rust is to grow resistant varieties Use resistant varieties like Co 91010 (Dhanush), Co 87025 (Kalyani)
  • Affected leaves should be removed and burn immediately
  • Sugarcane grown in fields receiving recent applications of mill mud is typically very prone to rust.
Chemical method
  • Spray Tridemorph 1.0 litres or Mancozeb 2.0 kg/ha.
  • Use dithane M 45 @ 2 g/lit for one spraying.
  • Application of triazole or strobilurin or pyraclostrobin fungicide @ 3 g/ lit of water.



  • TamilNadu Agritech Portal


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