. Diseases of economic plants. Plant diseases. DISEASES OF SPECIAL CHOPS ing. One country alone is estimated to have suffered a loss of $950,000. Owing to its superficial similarity to the scab, it has perhaps been confounded with it in some instances. The first publica- tion concerning the disease appeared in 1902/ and the first detailed description in Upon the fruit the blotches are from 5-10 mm. in diam- eter, dark in color, with an advancing margin of very peculiar, irregular, jagged, or fringed appearance. By co- alescence large spots may form, and owing to tension, cracks appear,
. Diseases of economic plants. Plant diseases. DISEASES OF SPECIAL CHOPS ing. One country alone is estimated to have suffered a loss of $950,000. Owing to its superficial similarity to the scab, it has perhaps been confounded with it in some instances. The first publica- tion concerning the disease appeared in 1902/ and the first detailed description in Upon the fruit the blotches are from 5-10 mm. in diam- eter, dark in color, with an advancing margin of very peculiar, irregular, jagged, or fringed appearance. By co- alescence large spots may form, and owing to tension, cracks appear, enlarging to a centimeter in length, or even girdling the fruit, and reach- ing to the core. In the older portions of the blotch, minute pycnidia develop. These blotches mar the appearance of the fruit and injure it as fig. 27. —Apple blotch (phyiiostictose) a salable product. °"'"'^" ^"^"^^'• Upon twigs, spurs, or shoots are produced cankers, 1 Clinton, G. P., 111. Agr. Exp. Sta. Bui. 69, pp. 190-192. - Scott, W. M., and Quaintance, A. L., Dept. Agr. Farmers' Bui. 283, pp. 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 Stevens, Frank Lincoln, 1871-1934; Hall, John Galentine, 1870-. New York, Macmillan
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Keywords: ., bookauthorstevensf, bookcentury1900, bookdecade1910, bookyear1910
