leaf rust

noun

Definition of leaf rust

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

Examples of leaf rust in a Sentence

Recent Examples on the Web 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 The plants are infected with coffee-leaf rust, a devastating fungus. Maryn Mckenna, The Atlantic, 16 Sep. 2020 Coffee leaf rust is one of the biggest threats to coffee production, but a team of ecologists may have found its potent natural enemy: the Asian trampsnail. Jonathan Wolfe, New York Times, 11 Mar. 2020 That was when Professor Perfecto and two other ecologists, Zachary Hajian-Forooshani and John Vandermeer, visited the area trying to understand why the region had not been as severely hit by coffee leaf rust as Central America and Mexico. Maria Cramer, New York Times, 11 Mar. 2020 And the complexities of the coffee bean — and the leaf rust that's threatening to wipe out coffee farms worldwide — make coffee as interesting of a crop as any other. Fox News, 20 Mar. 2018 The aim is to inform customers about the challenges these farmers face, including coffee leaf rust and climate change, and the company’s commitment to ethical and sustainably sourced coffee. Natasha Bach, Fortune, 29 Sep. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'leaf rust.' 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 leaf rust

1859, in the meaning defined above

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Time Traveler for leaf rust

Time Traveler

The first known use of leaf rust was in 1859

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Dictionary Entries Near leaf rust

leaf rosette

leaf rust

leaf scald

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Statistics for leaf rust

Cite this Entry

“Leaf rust.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/leaf%20rust. Accessed 27 Jan. 2022.

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