. Manual of fruit diseases . Fruit. APPLE DISEASES 37 found at any place on any or all sides. Injuries may occur at any height on a tree ; at the crown, the injury known as crown- rot or collar-rot; at the crotch, crotch-injury; on the main limbs as they diverge from the crotch, known as sun-scald; at the roots, root-injury. The tips of branches are sometimes killed back for some distance. Not infrequently the injury may extend from the collar to the head, involving large areas. Crown-rot, or collar-rot, occurs at the crown or base of the trunk at the ground line. It is distinguished from sun-
. Manual of fruit diseases . Fruit. APPLE DISEASES 37 found at any place on any or all sides. Injuries may occur at any height on a tree ; at the crown, the injury known as crown- rot or collar-rot; at the crotch, crotch-injury; on the main limbs as they diverge from the crotch, known as sun-scald; at the roots, root-injury. The tips of branches are sometimes killed back for some distance. Not infrequently the injury may extend from the collar to the head, involving large areas. Crown-rot, or collar-rot, occurs at the crown or base of the trunk at the ground line. It is distinguished from sun-scald and crotch-injury by its position on the tree. It is normally an early form of win- ter-injury. Obser- vations indicate that it may occur from October to December in the latitude of New York, Ohio and Connecticut. The Tompkins King, Grimes and Hubbardston are most subject to crown-rot. In such injured places the bark appears discolored, dead and loosened from the trunk, sometimes split open, exposing the wood. Again the injured bark clings to the wood for a time, forming a canker at the crown. Sun-scald is usually made evident in the late spring by the. Fig S — Apple-tree nearly dead as a result of low temperature Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Hesler, L. R. (Lexemuel Ray); Whetzel, Herbert Hice, 1877-1944. New York : Macmillan
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyo, bookyear1917
