. Annals of applied biology. Biology, Economic; Biochemistry. 196 Potato Diseases being of bacterial nature. The apparently conflicting evidence, such as is production of a healthy crop from susceptible varieties upon " sprained " land and the occurrence of healthy issue from diseased tubers, is paralleled among the organism-caused diseases. Thus the potato crop including that obtained from the susceptible varieties may not be appreciably affected by the canker organism although this parasite is actually present in the soil, whilst the production of healthy plants and potatoes from s
. Annals of applied biology. Biology, Economic; Biochemistry. 196 Potato Diseases being of bacterial nature. The apparently conflicting evidence, such as is production of a healthy crop from susceptible varieties upon " sprained " land and the occurrence of healthy issue from diseased tubers, is paralleled among the organism-caused diseases. Thus the potato crop including that obtained from the susceptible varieties may not be appreciably affected by the canker organism although this parasite is actually present in the soil, whilst the production of healthy plants and potatoes from sets affected with Phytophthora is, as I have already stated, of common occurrence. The failure to obtain sprain in the vegetative generations proceeding from tubers originally selected as disease-free from diseased stock of susceptible varieties when planted in soils of several kinds in different localities seems opposed to a purely physiological 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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