root rot

nounPlant Pathology.

a symptom or phase of many diseases of plants, characterized by discoloration and decay of the roots.
any disease so characterized.

Origin of root rot

First recorded in 1880–85

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

I think you will have more loss from sunscald and root rot than you will from blight.
Northern Nut Growers Association Report of the Proceedings at the Thirty-Eighth Annual Meeting | Northern Nut Growers Association
Both are associated with and are probably a cause of the root-rot of the cherry and other orchard fruits.
The Cherries of New York | U. P. Hedrick
The pecan has fungus root-rot and various wood rot fungi besides the leaf diseases.
Northern Nut Growers Association, Report of the Proceedings at the Fourth Annual Meeting | Various
The cotton crop of the country is threatened with root rot, the bollworm, and the boll weevil.
State of the Union Addresses of Theodore Roosevelt | Theodore Roosevelt
The former is more suited to the moister soils and wherever there is danger of root-rot, and the latter to the drier soils.
Manual of American Grape-Growing | U. P. Hedrick

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