Black rot is a name used for various diseases of cultivated plants caused by fungi or bacteria, producing dark brown discoloration and decay in the leaves of fruit and vegetables:
A disease of the apple, pear and quince caused by a fungus (Botryosphaeria obtusa or Physalospora cydoniae)
A disease of grape vines caused by a fungus (Guignardia bidwellii), affecting the aboveground part of the vine, and favored by warm, humid weather; also called grape rot
^Sally A. Miller; F. Sahin; Randall C. Rowe. "Black Rot of Crucifers, HYG-3125-96". Plant Pathology. Ohioline, The Ohio State University. Archived from the original(web) on 2001-12-24. Retrieved 2008-01-12.