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leaf rust

noun, Plant Pathology.
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.
Origin of leaf rust
1860-65 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Historical Examples
  • The only danger in very early planting is that leaf-rust sometimes attacks the forward crop.

    Agriculture for Beginners Charles William Burkett

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