Apple blotch and its control (1917) (19738045912)

Title: Apple blotch and its control
Identifier: appleblotchitsco534robe (find matches)
Year: 1917 (1910s)
Authors: Roberts, John W. (John William), 1882-
Subjects: Apples; Apple blotch
Publisher: Washington, D. C. : U. S. Dept. of Agriculture
Contributing Library: U.S. Department of Agriculture, National Agricultural Library
Digitizing Sponsor: U.S. Department of Agriculture, National Agricultural Library

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Text Appearing Before Image:
Bui. 534, U. S. Dept. of Agriculture. Plate
Text Appearing After Image:
Apple Leaves and Twigs Showing Blotch. 1 and 2, Leaves of the Arkansas Black variety, with spots caused by the blotch fungus, Centerton, Ark., July 31,1915; 3, 1-year-old blotch canker on Ben Davis apple twig, Bentonville, Ark., 1914; 4, 2-year-old blotch canker on Ben Davis apple twig, Bentonville, Ark., 1914; 5, leaf of the Missouri variety, showing lesions on petiole and midrib produced by artificial inoculation with spores of Phyllosticta solitaria from pure cultures; 6, an older blotch canker on a Ben Davis twig, Bentonville, Ark., September 9, 1916.

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