. 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. 171 V/II5AT - ijunt California: Continued rsduction Df bunt is apparent in this year's crop. The effocts oC the srut campaign are evidently apparent in the re~ duction of bunt. Il is estimated that the attack v/ill average less than one half of 1%, v/ith many areas averaging less than one tenth of 1%. Many thousands of acres smut-free. (Mackie). Factors influencing the amount of bunt The question arises as to the reason for the increase in
. 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. 171 V/II5AT - ijunt California: Continued rsduction Df bunt is apparent in this year's crop. The effocts oC the srut campaign are evidently apparent in the re~ duction of bunt. Il is estimated that the attack v/ill average less than one half of 1%, v/ith many areas averaging less than one tenth of 1%. Many thousands of acres smut-free. (Mackie). Factors influencing the amount of bunt The question arises as to the reason for the increase in the amount jf bunt in Montana, Idc^ho, V/ashington, and Oregon. In a recent paper, Hungerford (5) iias shown that low soil temperatures and a fairly high percentage of mjis- ture in the s^il at seeding time, are conducive tj bunt infectiun* In a series jf controlled greenhouse experiments, he f^und that the highest percentage of infection was secured at temperatures ranging from 9 tj 12'^C, (48 to 54*F) , and in soil containing 22% moisture and v/ith a moisture equivalent to At the highest temperatures there was a falling off in the amount of disease, and in SDils v/here there was an extremely high percentage jf moisture, infection seemed to be inhibited*. Fig. 15- Dates v/hen seeding of winter wheat begins (Seedtime and harvest. U. S. D. A. Circ. 183. 1^22).. 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
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Keywords: ., bookcentury1900, bookcollectionbiod, bookdecade1920, bookyear1923
