. Black rot, leaf spot and canker of pomaceous fruits. Black rot; Leaf spots; Canker (Plant disease); Apples. Bulletin 379 . Plate IX -:**%**. NATURAL CANKERS AND CANKERS PRODUCED BY ARTIFICIAL INOCULATION WITH rHYSALOSPORA CYDONIAE 1. Natural infection on the left; artificial infection on the right. The latter inoculated on July I, [913, with a strain from Twenty Ounce apple bark. Photograph made September 30, 1913 2. Canker on trunk of mature pear tree. Inoculation made July 18, 1910. photograph made September 1, 1911 3. The result of inoculation by use of pyenospores from apple leaves. The
. Black rot, leaf spot and canker of pomaceous fruits. Black rot; Leaf spots; Canker (Plant disease); Apples. Bulletin 379 . Plate IX -:**%**. NATURAL CANKERS AND CANKERS PRODUCED BY ARTIFICIAL INOCULATION WITH rHYSALOSPORA CYDONIAE 1. Natural infection on the left; artificial infection on the right. The latter inoculated on July I, [913, with a strain from Twenty Ounce apple bark. Photograph made September 30, 1913 2. Canker on trunk of mature pear tree. Inoculation made July 18, 1910. photograph made September 1, 1911 3. The result of inoculation by use of pyenospores from apple leaves. The healing process has occluded the wound before the pathogene could produce a large canker. Inoculation made July I, 1912, photograph made September 20. 1913 4. Canker on Baldwin twig produced artificially, using ascospores from apple. Inoculation made July 25, 1914, photograph made December 10, 1914. 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). Ithaca, N. Y. : Cornell University
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectblackro, bookyear1916
