A disease of potatoes producing pits in their surface, caused by a minute fungus (Tiburcinia Scabies).
Any one of various more or less destructive fungus diseases attacking cultivated plants, and usually forming dark-colored crustlike spots.
Scab is sometimes mistaken for other leaf spot diseases, but look closely. The dark spots on the leaves (which can also occur on fruit) are not dead tissue, but are small fungal colonies. Scab is common in rainy areas, but can also affect plants in overly moist conditions. Increase air circulation around the infected plant and reduce watering. Remove and destroy infected material for best results. Sulfur can be used to control scab in extreme situations.
An expansion discontinuity defect on the surface of a casting which appears as a rough, slightly raised surface blemish, crusted over by a thin porous layer of metal under which is a honeycomb or cavity that usually contains a layer of sand.
dark, corky patches infect developing leaves and fruit. Many scabs scattered over fruit surface.
crust-like disease lesion.
the crustlike surface of a healing skin lesion
A roughened, crust-like diseased area on the surface of a plant organ. A disease in which such areas form.
Fungal diseases that create rough raised spots on a plant's leaves or on its fruits.
Scab is a common disease of potatoes characterized by irregularly shaped lesions ( picture), (often with a rough texture), on the skin of the tuber, and small, white nodules on the fibrous roots of the plant. There are no above ground symptoms. Scab may not affect crop yields, but greatly reduces potato quality. Powdery scab can result in tuber breakdown in storage. The fungus Streptomyces scabies causes common scab, and the bacteria Spongospora subterranean causes powdery scab. Also see Potato Disease and Pest Management Pages
Crustlike disease lesion.
Localized lesions on fruit, leaves, etc. Often raised and cracked with a scabby appearance.
Any of a wide range of unrelated plant diseases having a roughened, crustlike diseased area on the surface of a plant organ (e.g., apple scab, potato scab, wheat scab). ()