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leaf rust

noun

, Plant Pathology.
  1. a disease, especially of cereals and other grasses, characterized by rust-colored pustules of spores on the affected leaf blades and sheaths and caused by any of several rust fungi.


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Word History and Origins

Origin of leaf rust1

First recorded in 1860–65
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Example Sentences

The only danger in very early planting is that leaf-rust sometimes attacks the forward crop.

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leaf rollerleaf scald