. Diseases of cereal and forage crops in the United States in 1919. Grain Diseases and pests United States; Forage plants Diseases and pests United States. conditions are correct and no other imperfect fun,^i are attacking. However, scab ana otlier fun£,i develop profusely under essentially the same conditions -"hich facilitate the development of rust. VvTien the stem is mutilated or injured by the rust pustules, fusarial fungi and otiier stem parasitic and saprophytic forms readi- ly destroy trie straw ; The greatest losses occa rifed in the barberry eradication
. Diseases of cereal and forage crops in the United States in 1919. Grain Diseases and pests United States; Forage plants Diseases and pests United States. conditions are correct and no other imperfect fun,^i are attacking. However, scab ana otlier fun£,i develop profusely under essentially the same conditions -"hich facilitate the development of rust. VvTien the stem is mutilated or injured by the rust pustules, fusarial fungi and otiier stem parasitic and saprophytic forms readi- ly destroy trie straw ; The greatest losses occa rifed in the barberry eradication area-' This is at least partly chargeable to the fact that the barberries -were not all out. Severe attacks of the rust also occurred in est Virginia in miany sec- tions of which state numerous barberries were found along fences and roadsides grcv/ing wild. This was especially true in Monroe ?ig. 5* -oercentage reduction in vield from steni rust of wheat, 1919. V/hile the-barberry eradicati jn campaign was pressed vigorously in ::.ost states of the barberry eradication area, numerous infected oarberries, both cul- tivated and escapedj v.'ere ioand vddely scattered m a- number of states. As in the preceding year, a number of cases were noted, especially in the "northern states, where infected barberries v/ere clearly the centers of infection from which the rust had started in the spring* In a limited number of cases early infections, especially on certain grasses, and later on wheat or other grains,. 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 Johnson, A. G; Haskell, Royal J. (Royal Joyslin), 1890-1958; United States. Plant Disease Survey. [Washington, D. C. ] : Plant Disease Survey, Bureau of Plant Industry, United States Department of Agriculture
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Keywords: ., bookcentury1900, bookcollectionbiod, bookdecade1920, bookyear1920
