stem rust


Definition of stem rust

1 : a rust attacking the stem of a plant especially : a destructive disease especially of wheat caused by a rust fungus (Puccinia graminis) which produces reddish-brown lesions in the uredospore stage and black lesions in the teliospore stage and has any of several plants of the barberry family as an intermediate host
2 : the fungus causing stem rust

Examples of stem rust in a Sentence

Recent Examples on the Web Borlaug landed in the valley in the 1940s as an agricultural adviser for the Rockefeller Foundation while the farmers around him were beset by a fungus known as stem rust. Washington Post, 22 Dec. 2021

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

First Known Use of stem rust

1899, in the meaning defined at sense 1

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Time Traveler for stem rust

Time Traveler

The first known use of stem rust was in 1899

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Dictionary Entries Near stem rust


stem rust

stem sickness

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Statistics for stem rust

Cite this Entry

“Stem rust.” Dictionary, Merriam-Webster, Accessed 10 Aug. 2022.

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