. Diseases of cereal and forage crops in the United States in 1922. Grain Diseases and pests United States; Forage plants Diseases and pests United States. 229 OaTS - Crown rust available. Due to the irregularity of precipitation over the state, it is likely that heavjf infection occurred in some fields and slight in others I similar to tho v/heat stem rust infections. (V/eniger) i Dots indicate heavy infection of buckthorn. Fig. 32* Locations in North Dakota where heavy infection of crown rust occurred on buckthorn (1922), after map prepared by V/eniger. Saskatchewan: The aecial stage of this
. Diseases of cereal and forage crops in the United States in 1922. Grain Diseases and pests United States; Forage plants Diseases and pests United States. 229 OaTS - Crown rust available. Due to the irregularity of precipitation over the state, it is likely that heavjf infection occurred in some fields and slight in others I similar to tho v/heat stem rust infections. (V/eniger) i Dots indicate heavy infection of buckthorn. Fig. 32* Locations in North Dakota where heavy infection of crown rust occurred on buckthorn (1922), after map prepared by V/eniger. Saskatchewan: The aecial stage of this rust was very severe on Rhamnus carthartica in Southern Saskatchewan in early summer. It was eb Abundant that- the buckthorns appeared yellow at some distance. It was present, but less severe, in the northern part of the province. The crov/n rust was very severe in Southern Saskatchewan, and extended northv/ard as far at least as Saskatoon, but not nearly so severe as in the south. (\7. P. Eraser.) References Melhus, I. E., 3. M. Dietz and Florence Willey. Alternate hosts and biologic specialization of crown rust in America. Iowa Agr. Exp. Sta. Res. Bui. 72: 2II-23&. Jan. 1922. Parker, J. H. A revi^iW of the literature on the rusts of oats, vdth notes on their distribution in the United States. Proc. Kansas Acad. Soi. 30 (51st-53d Ann. Meet.): 7I-I18. I922. Literature cited: p. 117-ll8«. 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 Haskell, Royal J. (Royal Joyslin), 1890-1958; Wood, Jessie I; United States. Plant Disease Survey. [Washington, D. C. ] : Plant Disease Survey, Bureau of Plant Industry, United States Department of Agriculture
Size: 1985px × 1258px
Photo credit: © Paul Fearn / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollectionbiod, bookdecade1920, bookyear1923
