EXPERIMENTS WITH DURUM WHEAT. 



51 



ically, as will be seen from figure 13. They are also representative 

 of the greatest extremes of altitude and precipitation, as will be noted 

 from Table II (p. 15). Their altitude ranges from less than 100 feet 

 to nearly 6,000 feet, and the precipitation ranges from 9.5 to 23.6 

 inches per annum. 



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Fig. 13. — Diagram showing the location of six stations in the Great Basin and western coast areas and the 

 average yield of the leading variety of durum wheat and the leading variety of each of several different 

 groups of common wheat at each station during the periods of years indicated: 1, Average of only four 

 years (Preston and Fife groups at Moro); 2, average of all varieties of durum wheat grown at Chico. 



Durum wheats are not grown commercially anywhere in these 

 areas. The leading wheats are the hard red winter varieties of the 

 Crimean group and a number of soft red and soft white wheats, both 

 winter and spring. None of them except the members of the 

 Crimean group are varieties grown in the Great Plains area. 



