leaf rust


: a rust disease of plants and especially of wheat that affects primarily the leaves

Example Sentences

Recent Examples on the Web Liberica seemed to be more resistant to leaf rust and grew well in warmer lowland regions, unlike fussy arabica, which prefers cool temperatures and higher altitudes. WIRED, 16 Jan. 2023 Raking and destroying infected leaves can reduce Marssonina and Septoria leaf spot, ink spot and leaf rust. oregonlive, 28 May 2022 At the time, the ubiquitous arabica coffee plants were stricken by leaf rust disease, which was annihilating trees in coffee plantations across Southeast Asia. WIRED, 16 Jan. 2023 Historical anecdotes suggest stenophylla also might be relatively drought-tolerant, and resistant to coffee leaf rust, Davis says. Nathaniel Scharping, Discover Magazine, 7 Oct. 2022 Coffee production still takes place on the Indonesian island today, despite a coffee leaf rust disease outbreak in the 1800s that decimated the industry. New York Times, 21 Jan. 2022 In the 1870s coffee leaf rust, Hemileia vastatrix, wiped out coffee plants in all of South Asia, completely reordering the colonial agriculture of India and Sri Lanka and transferring coffee production to Central and South America. Maryn Mckenna, Scientific American, 19 May 2021 Beyond alleged counterfeiters, his nemeses are rats, invasive plants, twig- and berry-boring beetles and coffee leaf rust, a predatory fungus from 19th century Africa that reached the Big Island last fall. Los Angeles Times, 17 Mar. 2021 But in her research, Aime has been building what is effectively a genetic atlas of coffee-leaf rust, made up of genomic analyses of thousands of fungal samples. Maryn Mckenna, The Atlantic, 16 Sep. 2020 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'leaf rust.' 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

1859, in the meaning defined above

Time Traveler
The first known use of leaf rust was in 1859

Dictionary Entries Near leaf rust

Cite this Entry

“Leaf rust.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/leaf%20rust. Accessed 3 Jun. 2023.

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