Definition:
From Wikipedia, the free encyclopedia
Apple scab is a disease of apple trees (genus Malus) 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.
Comment:
There is no problem pressing fruit with scab for cider. Do not press fruit with active rot lesions or any sign of blue mold.
Alan Biggs
Professor of Plant Pathology
West Virginia University