. Annals of applied biology. Biology, Economic; Biochemistry. 198 Potato Diseases " No plant disease in this generation has been the subject of such general discussion as that known in Germany as the ' l^lattrollkrank- heit' herein named ' Leaf-roll.' None has aroused greater difference of opinion as to its nature and cause, and no other single malady of plants is to-day receiving so much investigation by skilled pathologists. Fig. 7. Foliage from a plant of the President potato affected v/ith curl showing the under surface of the leaflet exposed owing to the curl, small brown blotchss an
. Annals of applied biology. Biology, Economic; Biochemistry. 198 Potato Diseases " No plant disease in this generation has been the subject of such general discussion as that known in Germany as the ' l^lattrollkrank- heit' herein named ' Leaf-roll.' None has aroused greater difference of opinion as to its nature and cause, and no other single malady of plants is to-day receiving so much investigation by skilled pathologists. Fig. 7. Foliage from a plant of the President potato affected v/ith curl showing the under surface of the leaflet exposed owing to the curl, small brown blotchss and dead leaflet-ends. as this. Possibly no disease which has appeared since the advent of Phfjlophihora injeslans in the forties presents a greater menace to potato culture"—W. A. Orton, Feb. 10, 1914 in Dept. Agric. Bur. PL Ind. Bull, 64 (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 Association of Applied Biologists; Association of Economic Biologists. [Wellesbourne, Warwick, etc. ] Association of Applied Biologists [etc. ]
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