apple scab


Definition of apple scab

: a disease of apple trees caused by a fungus (Venturia inaequalis) producing dark blotches or lesions on the leaves, fruit, and sometimes the young twigs

Examples of apple scab in a Sentence

Recent Examples on the Web

For example, flowering crabapple trees are susceptible to a fungus disease called apple scab, so choose a crabapple cultivar selected to resist the disease. Beth Botts,, "Think about space, pests, diversity before buying a new tree," 25 Apr. 2018 Applying dormant sprays — superior oil, copper and sulfur — helps control nasty pests and diseases like codling moths and apple scab. The Oregonian/oregonlive,, "Newspaper corrections for Feb. 14, 2018," 13 Feb. 2018 Applying dormant sprays - Superior oil, copper, and lime sulfur - helps control nasty pests and diseases like codling moths and apple scab. Kym Pokorny,, "Winter is the time to get ahead of fruit tree problems," 7 Feb. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'apple scab.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of apple scab

1883, in the meaning defined above

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The first known use of apple scab was in 1883

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