. Manual of fruit diseases . Fruit. APPLE DISEASES 47 King are sometimes so grouped. A peculiar and interesting case was called to the authors' attention in a New York State orchard where old trees of tiae Baldwin variety had been grafted to Twenty Ounce some twentj- years ago. The point of union is about midway distant between the crotch and the highest tip of the branches. The canker shows abundantly on the Twenty Ounce portions of the tree, but the Baldwin stock is entirely free from the disease. In most cases the disease extends down the Twenty Ounce bark to the point of union, there stopp
. Manual of fruit diseases . Fruit. APPLE DISEASES 47 King are sometimes so grouped. A peculiar and interesting case was called to the authors' attention in a New York State orchard where old trees of tiae Baldwin variety had been grafted to Twenty Ounce some twentj- years ago. The point of union is about midway distant between the crotch and the highest tip of the branches. The canker shows abundantly on the Twenty Ounce portions of the tree, but the Baldwin stock is entirely free from the disease. In most cases the disease extends down the Twenty Ounce bark to the point of union, there stopping very abruptly. This indicates that the Bald- win is at least not to be classed with the Twenty Ounce and others of the most suscepti))le kinds. In Ontario, Canada,. Fig. 10. — Early stages in the development of black-rot of apple. the Ben Davis and Northern Spy are said to be susceptible varieties. Symptoms. Ripe fruits are more commonly attacked than green fruits. Signs of the disease may show anywhere on the surface or at 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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