. Annual report of the Agricultural Experiment Station. Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). 626 Bulletin 8o. the entire young fruit is involved, and it may die and fall ; but more often the fruit hangs upon the tree and the diseased portion becomes drj-, hard, black and sunken. Such a fruit, with the entire top third deformed by rust, is shown in Fig. ii. This rust fungus also penetrates the twigs, and often causes knots to ap- pear, resembling the black knot of the plum (Fig, 12). This fun- gus has a curious life history. Upon the quince, and
. Annual report of the Agricultural Experiment Station. Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). 626 Bulletin 8o. the entire young fruit is involved, and it may die and fall ; but more often the fruit hangs upon the tree and the diseased portion becomes drj-, hard, black and sunken. Such a fruit, with the entire top third deformed by rust, is shown in Fig. ii. This rust fungus also penetrates the twigs, and often causes knots to ap- pear, resembling the black knot of the plum (Fig, 12). This fun- gus has a curious life history. Upon the quince, and some relat- ed fruits, it is known as Roestelia aurantiaca, but it is really only a form of another and very diflferent looking fungus which causes apple-like swellings upon the twigs of red cedar trees and juniper bushes. Upon these plants the fungus is known as. 10.—Rusted young quinces. The left hand specimen is attacked at the blossom- end and the other at the stem end. Gyvinosporanghan davipes. This cedar fungus, or so-called cedar-apple, produces its spores in spring, and these are carried by the wind, and, alighting upon the quince, soon produce the rust; and when this rust upon the quince first attracts attention, it is already beyond control, as I have said, save by removing and burning the diseased parts. The spores produced by the quince rust are incapable, so far as known, of again producing the rust, but they are scattered by the wind and when they come upon the cedar or juniper produce the cedar apple stage. It has been. 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 Cornell University. Agricultural Experiment Station. Ithaca, N. Y. : The University
Size: 1880px × 1329px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., book, bookcentury1800, bookcollectionbiodiversity, bookdecade1880
