16 BULLETIN" 400, U. S. DEPARTMENT OF AGRICULTURE. 
Results in the Northern Great Plains Area. 
The northern half of the Great Plains area includes most of Nebraska 
and the Dakotas, northeastern Colorado, eastern Wyoming, and the 
eastern half of Montana. 
It was to the northern States of this division that Marquis wheat 
was first introduced. It is in the Dakotas and Montana that it has 
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Fig. G. — Diagram showing the average yields of the Marquis and the leading variety in each of several 
different groups of wheat at 11 stations in the northern Great Plains area during either two or three of the 
years 1913 to 1915, inclusive. 
become most extensively grown. In 1914 North Dakota alone pro- 
duced over four millions of bushels and South Dakota nearly a million 
bushels. No data for Montana were gathered. If statistics for the 
production in 1915 were available, the increase in these three States 
would be found to be enormous. 
Varietal experiments with the Marquis and other wheat varieties 
have been conducted under dry-land conditions at nine experiment 
stations in this section during the three years, 1913 to 1915, inclusive, 
