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red-brown butt rot

noun
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Definition of red-brown butt rot

: a destructive butt and root rot of various conifers caused by a pore fungus (Polyporus schweinitzii)

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“Red-brown butt rot.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/red-brown%20butt%20rot. Accessed 20 Oct. 2020.

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