rusty blotch

noun

Definition of rusty blotch

: a disease of barley caused by an imperfect fungus (Helminthosporium californicum) characterized by irregular brown blotches on the leaves

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Cite this Entry

“Rusty blotch.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rusty%20blotch. Accessed 5 Dec. 2021.

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