Fire blight, caused by the bacterium Erwinia amylovora, is a common and frequently destructive disease of pome fruit trees such as pears, apples and related plants.
Fire blight is a bacterial infection which usual appears on trunks, branches and twigs as cankers that ooze in spring. The ends of shoots will brown off, blacken and die. Dead and blackened fruit and leaves will hang on the tree throughout out the season.
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