noun Plant Pathology.
- black rat,
- black ring,
- black river,
- black rod,
- black root rot,
- black ruff,
- black run,
- black russian,
- black rust,
- black sage
Origin of black rot
Examples from the Web for black rot
In the grape regions of the South and Southwest, it is too susceptible to fungi especially the mildews and black-rot.
The disease is combatted by dusting with flowers of sulphur or by spraying with bordeaux mixture as for black-rot.
Vulpina is less resistant to black-rot than stivalis but somewhat more resistant than Labrusca.
Spraying with bordeaux mixture, as recommended for black-rot, is usually sufficient to keep the disease in check.
The vines are resistant to mildew, black-rot, and anthracnose and are strong, vigorous growers.