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Horticultural crops :: Flowers :: Chrysanthemum

Rust: Puccinia chrysanthemi

Symptoms

  • The disease symptoms are in the form of brown blister-like swellings, which appear on the undersides of leaves.
  • These burst open releasing masses of brown, powdery spores.
  • Severely infected plants become very weak and fail to bloom properly.
White and yellow rust Raised rust pustules White rust on stem

Management

  • Early removal of infected leaves/plants helps to prevent the further spread of the disease.

Image Source:

http://www.greenhouse.cornell.edu/pests/gallery/index.htm, https://negreenhouseupdate.info/photos/chrysanthemum-white-rust-puccinia-horiana-0

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