. Manual of fruit diseases . Fruit. 60 MANUAL OF FRUIT DISEASES but also through the cankered area, eventually giving the surface a roughened aspect. This is especially noticeable on cankers two or three years old. The diseased area may ex- tend along the margin at sev- eral points, resulting in a lobed or somewhat concentric appearance. Cankers may or may not surround the limb; in the latter case the margin is marked by a crevice beneath which originates a callus. AfFected leaves show spots within two months after the petals have fallen. The lesions are irregular in out- line, light-brown to
. Manual of fruit diseases . Fruit. 60 MANUAL OF FRUIT DISEASES but also through the cankered area, eventually giving the surface a roughened aspect. This is especially noticeable on cankers two or three years old. The diseased area may ex- tend along the margin at sev- eral points, resulting in a lobed or somewhat concentric appearance. Cankers may or may not surround the limb; in the latter case the margin is marked by a crevice beneath which originates a callus. AfFected leaves show spots within two months after the petals have fallen. The lesions are irregular in out- line, light-brown to yellowish or whitish in color, and meas- ure one-sixteenth of an inch, or less, in diameter. The spots are scattered indiscrim- inately over the leaf, occur- ring frequently on the veins, midrib and petiole. On ac- count of their minuteness, several lesions may appear on a leaf without attracting attention, and perhaps with- out great injury. In more severe cases the diseased leaf is more noticeable and such foliage may be dropped prema- turely. The leaf-petioles are attacked, in which case the leaves, instead of falling, turn brown, die and hang on the FiQ. 16. — Apple-blotch 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
