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ray blight

Syllabification: ray blight

Definition of ray blight in English:

noun

A fungal disease of chrysanthemums that causes collapse and rotting of the leading shoot.
  • The fungus is Didymella ligulicola, also called Ascochyta chrysanthemi
Example sentences
  • Ray blight is the most severe fungal, foliar disease of pyrethrum in Tasmania, Australia.

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