ring rot

noun

, Plant Pathology.

1. 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.

ring rot

noun

1. a virulent bacterial disease of potatoes occurring in the vascular ring of the potato tuber Also calledpotato ring rot

Word History and Origins

Origin of ring rot¹

An Americanism dating back to 1900–05