. Fig. 41.—Eosette disease of Muir peach: A, on leaves; B, on blossoms. Mosaic.^*—Foliation in spring is retarded on trees affected with mo- saic, and the young leaves are yellow, dwarfed, and deformed. Twig growth is shortened or "bunchy," flowers may be mottled in color, and the fruit roughened and deformed. These symptoms are not displayed uniformly by all varieties of peaches. As a rule, those of the J. H. Hale and Elberta type are the most severely affected, while the clingstone canning varieties are more tolerant. The disease, caused by a virus, is spread by budding or grafting
. Fig. 41.—Eosette disease of Muir peach: A, on leaves; B, on blossoms. Mosaic.^*—Foliation in spring is retarded on trees affected with mo- saic, and the young leaves are yellow, dwarfed, and deformed. Twig growth is shortened or "bunchy," flowers may be mottled in color, and the fruit roughened and deformed. These symptoms are not displayed uniformly by all varieties of peaches. As a rule, those of the J. H. Hale and Elberta type are the most severely affected, while the clingstone canning varieties are more tolerant. The disease, caused by a virus, is spread by budding or grafting and by some unknown natural method, possibly insects, from tree to tree. An orchard may be ruined within a few years after mosaic is introduced. There is no known remedy or treatment for this disease except to de- stroy affected trees as soon as they show mosaic. Efforts are being made 2*For further information, see: Hutchins, Lee M., E. W. Bodine, and H. H. Thornberry. Peach mosaic, its identification and control. U. S. Dept. Agr. Cir. 427:1-48. 32 figs. 1937.
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