ring rot

ring rot

noun Plant Pathology.
a disease of potatoes, characterized by wilted foliage and rotting of the ring of vascular bundles in the tubers, caused by a bacterium, Corynebacterium sepedonicum.

Origin:
1900–05, Americanism

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World English Dictionary
ring rot
 
n
Also called: potato ring rot a virulent bacterial disease of potatoes occurring in the vascular ring of the potato tuber

Collins English Dictionary - Complete & Unabridged 10th Edition
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