878 
Journal of Agricultural Research voi. xxvn, no. u 
Gibberella saubinetii was the principal organism isolated from scabbed 
wheat heads. The same organism was found very abundantly on old corn¬ 
stalks. 
When used as an inoculum on disease-susceptible corn this organism 
caused a considerable decrease in stand, general vigor, and yield. 
Resistant strains of com, field selected, well cured, and also selected on 
the germinator for vigor and freedom from disease, were injured to a less 
extent by inoculation with the wheat-scab organism. Such corn also did 
not suffer much reduction in yield whe'n grown after scabbed wheat. 
A crop rotation in which the wheat crop neither directly precedes nor 
follows the com crop seems highly advantageous for the corn-wheat 
sections. 
LITERATURE CITED 
(1) Adams, J. F. 
1921. OBSERVATIONS ON WHEAT SCAB IN PENNSYLVANIA AND ITS PATHOLOGI¬ 
CAL history. In Phytopathology, v. 11, p. 115-124, 1 fig., pi. 2-3. 
Literature cited, p. 123-124. 
(2) Beckwith, T. D. 
1911. ROOT AND CULM INFECTIONS OP WHEAT BY SOIL FUNGI IN NORTH DAKOTA. 
In Phytopathology, v. 1, p. 169-176. 
(3) Bolley, H. L. 
1913. WHEAT: SOIL TROUBLES AND SEED DETERIORATION. CAUSES OF SOIL 
SICKNESS IN WHEAT LANDS. POSSIBLE METHODS OF CONTROL. CROP¬ 
PING methods with wheat. N. Dak. Agr. Exp. Sta. Bui. 107, 94 p., 
45 fig- 
(4) DIckson, J. G. 
1923. INFLUENCE OF SOIL TEMPERATURE AND MOISTURE ON THE DEVELOPMENT 
OF THE SEEDLING-BLIGHT OF WHEAT AND CORN CAUSED BY GIBBERELLA 
saubinetii (mont.) sacc. In Jour. Agr. Research, v. 23, p. 837-870, 
6 pi. Literature cited, p. 869-870. 
( 5 ) -Johann, Helen, and WinEland, Grace. 
1921. second progress report on the fusarium blight (scab) of wheat, 
(abstract). In Phytopathology, v. 11, p. 35. 
(6) Fromme, F. D. 
1921. diseases of cereal and forage crops in the united states in 1920. 
U. S. Dept. Agr., Bur. Plant Indus., Plant Disease Bui. Sup. 15, 
p. 115-176, illus. 
(7) Hoffer, G. N., and Holbert, J. R. 
1918. SELECTION OF DISEASE-FREE SEED corn. Ind. Agr. Fxp. Sta. Bui. 
224, 16 p., 20 fig. 
(8) -Johnson, A. G., and Atanasoff, D. 
1918. corn-rootrot and wheatscab. In Jour. Agr. Research, v. 14, p. 611- 
612. 
(9) Holbert, J. R., Dickson, J. G., and Biggar, H. H. 
1920. CORRELATION OF EARLY GROWTH, VARIATION AND PRODUCTIVITY OF 
maize as influenced by certain pathologic factors. In Phyto¬ 
pathology, v. 10, p. 57-58. 
(10) -and Hoffer, G. N. 
1920. CONTROL OF THE ROOT, STALK, AND EAR ROT DISEASES OF CORN. U. S. 
Dept. Agr. Farmers’ Bui. 1176, 24 p., 25 fig. 
(11) -Trost, J. F., and Hoffer, G. N. 
1919. wheat scabs as affected by systems of rotation. In Phytopa¬ 
thology, v. 9, p. 45-47- 
(12) -and others. 
1923. EARLY VIGOR OF MAIZE PLANTS AND YIELD OF GRAIN AS INFLUENCED BY 
the corn root, stalk, and ear rot diseases. In Jour. Agr. Re¬ 
search, v. 23, p. 583-630, 20 fig. 7 pi. Literature cited, p. 628-629. 
(13) Johnson, A. G., and Dickson, J. G. 
1921. wheat scab and its control. U. S. Dept. Agr. Farmers’ Bui. 1224, 
16 p. 12 fig. 
(14) - and Haskell, R. J. 
1920. DISEASES OF CEREAL AND FORAGE CROPS IN THE UNITED STATES IN 1919. 
U. S. Dept. Agr., Bur. Plant Indus., Plant Disease Bui. Sup. 8, 81 
p., illus. 
