Apple scab is a disease to Malus trees, such as apple trees, caused by the ascomycete fungus Venturia inaequalis. The disease manifests as dull black or grey-brown lesions on the surface of tree leaves, buds or fruits. Lesions may also appear less frequently on the woody tissues of the tree. Fruits and the undersides of leaves are especially susceptible. The disease rarely kills its host, but can significantly reduce fruit yields and fruit quality. Affected fruits are less marketable due to the presence of the black fungal lesions.
Famous quotes containing the words apple and/or scab:
“yet another summer loath to go
Although the scythes hang in the apple trees.”
—Louise Bogan (18971970)
“Goodbye, boys; Im under arrest. I may have to go to jail. I may not see you for a long time. Keep up the fight! Dont surrender! Pay no attention to the injunction machine at Parkersburg. The Federal judge is a scab anyhow. While you starve he plays golf. While you serve humanity, he serves injunctions for the money powers.”
—Mother Jones (18301930)