apple scab

noun

: 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 These specialty crops are especially susceptible to diseases like apple scab, a fungal ailment that attacks both a tree’s leaves and fruit with unsightly lesions, and outbreaks of highly infectious fire blight, which can kill entire trees outright. Laura Kiniry, Smithsonian Magazine, 22 Dec. 2023 Great for eating fresh, these apples are crisp and mild in flavor and resistant to apple scab, a common disease for apples grown in this New York region. Katlyn Moncada, Better Homes & Gardens, 14 Dec. 2023 Clean up diseased or infested plants: If any of your plants had a serious problem, such as apple scab on crab apple trees or black spot on rose bushes, clean them up to reduce the risk that the problem will return next year. Beth Botts, Chicago Tribune, 20 Nov. 2022 Fungicide treatments for apple scab are done early in the spring when plants are flowering and not recommended at this time of the season. oregonlive, 11 June 2022 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 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'apple scab.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1883, in the meaning defined above

Time Traveler
The first known use of apple scab was in 1883

Dictionary Entries Near apple scab

Cite this Entry

“Apple scab.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/apple%20scab. Accessed 4 Mar. 2024.

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