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A Necrotic Leaf Blotch and Fruit Rot of Apple Caused by a Strain of Glomerella cingulata. Jack Taylor, Professor, Department of Plant Pathology and Plant Genetics, University of Georgia, Athens 30601; Phytopathology 61:221-224. Accepted for publication 25 September 1970. DOI: 10.1094/Phyto-61-221.

A strain of Glomerella cingulata morphologically similar to the apple bitter rot fungus causes a necrotic leaf blotch as well as a fruit rot of Golden Delicious apple and a fruit rot of other cultivars. It differs from the common isolates of the bitter rot organism culturally, by its capacity to cause a leaf blotch, overwinter and reproduce on apple leaves, and cause characteristic fruit symptoms without sporulation in fruit lesions. Fungicides and resistant varieties appear to offer an economical means of control.