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Leaf Rust /Brown Rust: Puccinia recondita

Symptom :

  • The postules are circular or slightly elliptical, smaller than those of stem rust, usually do not coalesce, and contain masses of orange to orange-brown Urediospores
  • Infection sites primarily are found on the upper surfaces of leaves and leaf sheaths and occasionally on the neck and awns
  • Survival : Both survive on stubbles and volunteer crops
  • Alternate host : Thalictrum sp.
  • Spread : uredospores from hills
Identification of pathogen:

Management:

Management: Mixed cropping with suitable crops. Avoid excess dose of nitrogenous fertilizers. Spray Zineb at 2.5 kg/ha or Propioconazole @ 0.1 %. Grow resistant varieties like PBW 343, PBW 550, PBW 17
Source of Microscopic images: Diseases of small grain cereal crops- A colour handbook by TD Murray, DW Parry and ND Cattlin
  • Mixed cropping with suitable crops.
  • Avoid excess dose of nitrogenous fertilizers.
  • Spray Zineb at 2.5 kg/ha or Propioconazole @ 0.1 %.
  • Grow resistant varieties like PBW 343, PBW 550, PBW 17
Urediniospores of Puccinia recondita (400X)