Diseases of economic plants (1910) Diseases of economic plants diseasesofeconom00stev Year: 1910 274 DISEASES OF ECONOMIC PLANTS While this disease as caused by Rhizoctonia has long been known in Europe, especially in Germany, no record of it h'la. 122. — Potato attacked by Corticium. After Rolfs. was made in America until 1891. Since that date it has been noted upon many hosts in many states. See p. 61.

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