Pear leaf blight or pear leaf spot is a disease brought on by the fungus Fabraea maculata. Pears produced on trees suffering from leaf blight will be cracked, misshapen or deformed and therefore unmarketable.
Pear leaf blight is caused by the fungus Fabraea maculata, which also causes leaf blight in apples, quinces and other tree fruits. Cool, moist weather in the early spring when trees are budding may promote leaf blight.
Pear trees suffering from leaf blight may have dark black or brown splotches on their leaves. As the disease worsens, more spots will appear until the leaves fall off the tree.
According to horticulturists at the University of West Virginia, nearly all types of European pears may be susceptible to leaf blight caused by fungus.
Approved fungicides can be used to treat pear leaf blight. Before spraying, check with your local county extension office for a list of approved fungicides for your location.
Old fallen leaves and tree cuttings can harbour fungus, so remove all clippings or tree waste to a garbage bin to maintain a healthy growing environment.