Diseases of cereal and forage Diseases of cereal and forage crops in the United States in 1922 diseasesofcereal27hask Year: 1923 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 Monta
Diseases of cereal and forage Diseases of cereal and forage crops in the United States in 1922 diseasesofcereal27hask Year: 1923 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, Idcho, 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 sil at seeding time, are conducive tj bunt infectiun* In a series jf controlled greenhouse experiments, he fund 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. 122).
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