. Chestnut blight. Chestnut blight; Chestnut. CnKSTNUT BLIGHT on smooth shoots a sunken area, which usually has a smooth, un- cracked surface; but when it fails to kill the cambium, new layers of bark cells are formed underneath the attacked area and an enlarged lesion results. The swollen cankers usually have a number of longitudinal fissures or splits. (Fig. 6.) Frequently cankers haA-e a smooth sunken area of bark in the center (fig. 6) and"raised margins with cracks and fissures in the swollen P'lOuaE 3.—A swollen blight cauker with suckers developed below the infected aiea On
. Chestnut blight. Chestnut blight; Chestnut. CnKSTNUT BLIGHT on smooth shoots a sunken area, which usually has a smooth, un- cracked surface; but when it fails to kill the cambium, new layers of bark cells are formed underneath the attacked area and an enlarged lesion results. The swollen cankers usually have a number of longitudinal fissures or splits. (Fig. 6.) Frequently cankers haA-e a smooth sunken area of bark in the center (fig. 6) and"raised margins with cracks and fissures in the swollen P'lOuaE 3.—A swollen blight cauker with suckers developed below the infected aiea On large thick-barked limbs and trunks a young blight infection causes very little change in the outward appearance of the bark. As the disease jjrogresses abnormal splits or cracks often appear and expose some of the buff-colored infected inner bark, which is different in color from the surface bark. The presence of j^ellow, orange, or reddish-brown pustules about the size of a pinhead in. 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 1906-1960
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Keywords: ., bookcolle, bookcollectionbiodiversity, booksubjectchestnutblight
