. Annual report of the Agricultural Experiment Station. Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). -60 Agricultural Experiment Station^ Ithaca, N. Y. and, as a rule, the very earliest attacks in bad seasons, are fatal. Various stages of injury upon the fruit are shown in the colored plate. Fig. 4 shows a Northern Spy taken July 5th, last year. This apple is now deformed by the attacks of the scab, and if it had remained upon the tree it would probably have become a gnarly, crooked specimen entirely uniit for use. It is probable, however, that the fung
. Annual report of the Agricultural Experiment Station. Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). -60 Agricultural Experiment Station^ Ithaca, N. Y. and, as a rule, the very earliest attacks in bad seasons, are fatal. Various stages of injury upon the fruit are shown in the colored plate. Fig. 4 shows a Northern Spy taken July 5th, last year. This apple is now deformed by the attacks of the scab, and if it had remained upon the tree it would probably have become a gnarly, crooked specimen entirely uniit for use. It is probable, however, that the fungus patches upon the stem would have soon cut off the food supply, causing the apple to fall. Fig. 6 is a Greening picked September 20th. The deep fissures have resulted from the check- ing of the growth of the fruit by the fungus. At the lower side of. 4. Apple injured by Bourdeaux mixture. the apple are shown two small scabs which are dead and harmless. The tissues of the apple have grown beneath them, and have broken them apart. During the past summer, this scab upon the fruit has been con- founded by some persons with an injury wrought by the Bordeaux mixture itseK. This injury is a russeted surface of the apple upon the sprayed side, much like that shown in the accompanying illustration. It appears to come mostly from the use of Bordeaux mixture which has an insufficient supply of lime to satisfy the re- actions which occur, in a wet season, after the mixture is applied to the tree. In seasons like the last, the use of the ferrocyanide of potassium test for the preparation of Bordeaux mixture is probably unsafe. This injury is not often serious, and the fruit more or less out-. 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 Univers
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