. Manual of fruit diseases . Fruit. 272 MANUAL OF FRUIT DISEASES the set of fruit; (2) twigs may be blighted, thus inflicting serious injury on the tree; (3) large limbs may be cankered, which form of the trouble is of great importance in parts of New York State; (4) the crop of fruit itself may be par- tially or wholly destroyed as a result of attacks by the brown-rot pathogene; green fruits, if injured by insects or hail, may be rotted extensively; and likewise ripe fruits on the tree, in transit, or in market may be wholly ruined as a result of rotting. Symptoms. The fruits are most commonl
. Manual of fruit diseases . Fruit. 272 MANUAL OF FRUIT DISEASES the set of fruit; (2) twigs may be blighted, thus inflicting serious injury on the tree; (3) large limbs may be cankered, which form of the trouble is of great importance in parts of New York State; (4) the crop of fruit itself may be par- tially or wholly destroyed as a result of attacks by the brown-rot pathogene; green fruits, if injured by insects or hail, may be rotted extensively; and likewise ripe fruits on the tree, in transit, or in market may be wholly ruined as a result of rotting. Symptoms. The fruits are most commonly affected (Fig. 71). However, other organs of the host are also sus- ceptible to the disease; these in- clude the blos- soms, twigs, limbs (Figs. 72 and 73) and occasionally the leaves. In America the flowers are com- monly affected, resulting in a serious blossom-blight. When the blossoms are opened, the petals turn brown and shrivel, but do not fall. Gray- ish tufts composed of the fruiting structures of the pathogene show on the affected blossoms. Twig-blight follows blossom- blight very closely, the former being a direct result of the latter. The leaves on such twigs wither and die and cling to the twig,. Fig. 72. — Brown-rot canker of peach, general appearance in the 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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