root knot

American  

noun

Plant Pathology.

1. a disease of plants, characterized by galls or knots on the roots and stunted growth, caused by any of several nematodes of the genus Meloidogyne.

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root knot Scientific  

1. A disease of plants characterized by protuberant swellings on the roots caused by infestation with nematodes.

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Etymology

Origin of root knot

First recorded in 1885–90

Example Sentences

Root Knot Disease of the Peach, Orange, and other Plants in Florida, due to the Work of Anguillula.

From Project Gutenberg

Root′-knot, an abnormal knot of a root.—adj.

From Project Gutenberg

In digging out some old peach trees, I find now and then a tree affected with root knot.

From Project Gutenberg