fire blight

noun Plant Pathology.

1. a disease of pears, apples, quinces, etc., characterized by blossom, twig, and fruit blight and stem cankers, caused by a bacterium, Erwinia amylovora.

noun

1. a disease of apples, pears, and similar fruit trees, caused by the bacterium Erwinia amylovora and characterized by blackening of the blossoms and leaves, and cankers on the branches