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Observations and studies on Potato spraing


, : Observations and studies on Potato spraing. Fortschr. der Landw, 8: 9, 200-205

The writer summarizes his observations on spraing of potatoes in the Cassel district of Germany, and discusses the problem of the increasing prevalence of this disease in the light of contemporary studies. It is evident that soil conditions play an important part in the development of spraing, but the nature of their influence has been variously interpreted. Appel, in his ' Taschenatlas der Kartoffel-krankheiten ' (I Teil: Knollenkrankheiten), Berlin, P.

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