. Fig. 48.—Blast of pear on twig and branch. place in the dormant season through wounds, including those on cluster bases; sometimes cankers of considerable size (fig. 48) are produced, but they are more superficial than blight cankers. The affected bark turns light brown to tan in color and eventually sloughs off, often without killing the inner bark. Blast of pear is caused by Phytonionas syringae— essentially the same organism as that which causes blight of lilac in some places, blast of pear and apple in the eastern states, blast and black pit of citrus, and bacterial gummosis of stone fru
. Fig. 48.—Blast of pear on twig and branch. place in the dormant season through wounds, including those on cluster bases; sometimes cankers of considerable size (fig. 48) are produced, but they are more superficial than blight cankers. The affected bark turns light brown to tan in color and eventually sloughs off, often without killing the inner bark. Blast of pear is caused by Phytonionas syringae— essentially the same organism as that which causes blight of lilac in some places, blast of pear and apple in the eastern states, blast and black pit of citrus, and bacterial gummosis of stone fruits in California.
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Keywords: ., bookc, bookcentury1900, bookcollectionamericana, booksubjectfruit
