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LITERATURE CITED 
Beckwith, T. D. 
1910. MYCOLOGICAL STUDIES UPON WHEAT AND WHEAT SOILS TO DETERMINE 
possible causes in deterioration in yield. In Science, n. s., v. 
31, p. 798. 
Bolley, H. L. 
1910. conservation op the purity of soils in cereal cropping. In Science, 
n. s., V. 32, p. 529-541. 
1913. wheat. N. Dak. Agr. Exp. Sta. Bui. 107, 94 p., 45 fig. 
Dickson, James G. 
1923. INFLUENCE OF SOIL TEMPERATURE AND MOISTURE ON THE DEVELOPMENT 
OF THE SEEDLING-BLIGHT OF WHEAT AND CORN CAUSED BY GIBBERELLA 
saubinETh. In Jour. Agr. Research, v. 23, p. 837-870, 15 fig., 6 pi. 
Literature cited, p. 869-870. 
Hungerford, C. W. 
1922. [NOTES ON THE HELMINTHOSPORIUM DISEASE in IDAHO DURING 1921.] 
In U. S. Dept. Agr. Bur. Plant Indus., Plant Disease Survey Bui. 
Sup. 21, p. 196. 
Johnson, Edward C. 
1914. A STUDY OF SOME IMPERFECT FUNGI ISOLATED FROM WHEAT, OAT, AND 
barley plants. In Jour. Agr. Research, v. 1, p. 475-490, pi. 42-43. 
Literature cited, p. 487-489. 
Jones, L. R. 
1921. EXPERIMENTAL WORK ON THE RELATION OF SOIL TEMPERATURE TO 
disease in plants. In Trans. Wis. Acad. Sci., Arts and Letters, v. 
20. P- 433 - 459 - pl- 33 - 37 - 
-McKinney, H. H., and Fellows, H. 
1922. THE INFLUENCE OF SOIL TEMPERATURE ON POTATO SCAB. Wis. Agr. 
Exp. Sta. Research Bui. 53, 35 p., 9 fig., 5 pl. Literature cited, p. 
34 - 35 - 
McKinney, Harold H. 
1921. THE SO-CALLED TAKE-ALL DISEASE OF WHEAT IN ILLINOIS AND INDIANA. 
(Abstract.) In Phytopathology, v. 11, p. 37. 
1922. THE HELMINTHOSPORIUM DISEASE OF WHEAT AND THE INFLUENCE OF 
soil temperature on seedling infection. (Abstract.) In Phyto¬ 
pathology, v. 12, p. 28. 
1923. INVESTIGATION ON THE ROSETTE DISEASE OF WHEAT AND ITS CONTROL. 
In Jour. Agr. Research, v. 23, p. 771-800, 2 fig., 8 pl. Literature cited, 
p. 799-800. 
Stakman, Louise J. 
1920. a helminthosporium disease of wheat and rye. Minn. Agr. Exp. 
Sta. Bui. 191, 18 p., 5 pl. 
Stevens, F. L. 
1919. FOOT-ROT DISEASE OF WHEAT—HISTORICAL AND BIBLIOGRAPHIC. In Ill. 
Nat. Hist. Surv. Bui., v. 13, art. 9, p. 259-286, illus. 
1920. foot-rot of wheat. In Science, n. s., v. 51, p. 517-518. 
1922. THE HELMINTHOSPORIUM FOOT-ROT OF WHEAT, WITH OBSERVATIONS ON 
THE MORPHOLOGY OF HELMINTHOSPORIUM AND ON THE OCCURRENCE 
of saltation in the genus. In Ill. Nat. Hist. Surv. Bui., v. 14, art. 
5, p. 77-185, illus. Literature cited, p. 171-178. 
