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UNITED STATES DEPARTMENT OF AGRICULTURE 
BULLETIN No. 878 
Contribution from the Bureau of Plant Industry 
WM. A, TAYLOR, Chief 
Washington, D. C. 
PROFESSIONAL PAPER 
November 9, 1920 
VARIETAL EXPERIMENTS WITH 
SPRING WHEAT ON THE NORTHERN 
GREAT PLAINS 
By 
J. ALLEN CLARK, Agronomist in Charge, JOHN H. MARTIN, 
Assistant Agronomist, and RALPH W. SMITH, Scientific Assist- 
ant, Western Wheat Investigations, Office of * 
Cereal Investigations 
CONTENTS 
Scope of the Investigations 
Sources of Experimental Data . . . . 
Varieties 
Strains of Common and Durum Wheat 
Key to Groups of Spring Wheat . . 
Common Wheat 
Durum Wheat 
Page 
1 
2 
2 
2 
3 
Page 
Varietal Experiments 11 
Northern Half of the Great Plains Area . 11 
Results of Field Experiments 13 
Milling and Baking Experiments ... 41 
Summary of Results 46 
Publications on Cereals in the Great 
Plains Area 48 
WASHINGTON 
GOVERNMENT PRINTING OFFICE 
1920 
