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leaf blight

noun

, Plant Pathology.
  1. a symptom or phase of many diseases of plants, characterized by necrotic spots or streaks on the leaves, accompanied by seed rot and seedling blight.
  2. any disease so characterized.


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Word History and Origins

Origin of leaf blight1

First recorded in 1840–50
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Example Sentences

The leaf blight appeared on the island about 1889, causing destruction from which there has not yet been complete recovery.

But this tree or shrub is so subject to the attacks of a leaf-blight that the culture has decreased.

The disease may be further controlled by spraying with Bordeaux mixture, as directed under leaf-blight.

A somewhat similar leaf-blight results from a species of Cylindrosporium, and other fungi may occur on diseased leaves.

Pear-growers are plagued by two leaf-spots, one of which is also known as leaf-blight.

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