black rot

noun Plant Pathology.

any of several diseases of fruits and vegetables, characterized by black discoloration and decay of affected parts, caused by fungi, as Guignardia bidwellii, or bacteria, as Xanthomonas campestris.

Origin of black rot

An Americanism dating back to 1840–50

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for black rot

Historical Examples of black rot

Unfortunately the fruit is susceptible to black-rot and shrivels after ripening.
Manual of American Grape-Growing
U. P. Hedrick
When raised in humid climates it is subject to the attacks of mildew and black-rot.
The Grapes of New York
U. P. Hedrick
Vulpina is less resistant to black-rot than stivalis but somewhat more resistant than Labrusca.
Manual of American Grape-Growing
U. P. Hedrick
Downy-mildew, like black-rot, spreads most rapidly and does most injury in hot, wet weather.
Manual of American Grape-Growing
U. P. Hedrick
The applications of bordeaux mixture recommended for black-rot are valuable in preventing the dead-arm disease.
Manual of American Grape-Growing
U. P. Hedrick

British Dictionary definitions for black rot

black rot

noun

any of various plant diseases of fruits and vegetables, producing blackening, rotting, and shrivelling and caused by bacteria (including Xanthomonas campestris) and fungi (such as Physalospora malorum)

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012