apple scab

noun

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 The damage on the leaves is likely due to apple scab, a very common disease on apples. oregonlive, 11 June 2022 If any of your plants had a serious problem, such as apple scab on crab apple trees or viburnum leaf beetles on viburnum shrubs, do clean it up to reduce the risk that the problem will return next year. Beth Botts, chicagotribune.com, 27 Nov. 2021 McIntosh is very susceptible to apple scab here and may have trouble with that disease. oregonlive, 31 Oct. 2021 For example, newer cultivars of flowering crabapple trees are usually resistant to apple scab and fire blight, diseases that disfigure many older trees. Beth Botts, chicagotribune.com, 19 Sep. 2021 It was designed to be more resistant to one of the most pernicious diseases in the fruit world — apple scab. Connie Nelson, Star Tribune, 17 Feb. 2021 Applying dormant sprays – Superior oil, copper and sulfur – helps control nasty pests and diseases like codling moths and apple scab. Kym Pokorny | For The Oregonian/oregonlive, oregonlive, 28 Dec. 2020 One more thing before moving into the relative warmth of the garage: Gather fruit hanging in trees or rotting on the ground and get it out of there to minimize diseases and pests such as apple scab and coddling moth next year. oregonlive, 24 Nov. 2020 Their trees embrace myriad molds, viruses, and fungi: apple scab, black pox, southern blight, union necrosis. Helen Rosner, The New Yorker, 8 June 2020 See More

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.

First Known Use of apple scab

1883, in the meaning defined above

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Time Traveler for apple scab

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The first known use of apple scab was in 1883

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Dictionary Entries Near apple scab

apple sawfly

apple scab

apple scald

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Statistics for apple scab

Last Updated

23 Jun 2022

Cite this Entry

“Apple scab.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/apple%20scab. Accessed 6 Jul. 2022.

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More from Merriam-Webster on apple scab

Britannica.com: Encyclopedia article about apple scab

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