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