CEREALS OX THE BELLE FOTJRCHE EXPERIMENT FARM. 15 
SPRING WHEAT. 
VARIETAL EXPERIMENTS. 
The varieties of spring wheat grown in the plat experiments on 
dry land are mostly those included in two main classes, the durum 
wheats and the com- 
mon hard red spring 
wheats. 8 Other 
types of spring- 
wheat were poorly 
adapted and were 
grown only in nurs- 
ery rows or in pre- 
liminary plat ex- 
periments. A total 
of 44 varieties was 
grown in plats dur- 
ing the 12 -year 
period. In some 
cases several lots of 
wheat under the 
same name but from 
different sources or 
different introduc- 
tions have been in- 
cluded, so that the 
actual number of 
distinct varieties is 
somewhat less than 
44. The annual and 
average yields for 
all varieties and 
strains are shown in 
Table VII. 
As shown in Table 
VII, good yields of 
spring wheat were 
produced in 1908. 
1909. 1915, and 
1918. fair yields in 
1913. poor yields in 
1910, 1914, 1916, 1917, and 1919, and failures of practically all varie- 
ties in 1911 and 1912. These yields depended largely upon the 
8 For a more complete discussion of the history and growing of these varieties of wheat, 
see Clark, J. Allen, Martin, John H., and Smith, Ralph W. Varietal experiments with 
spring wheat on the northern Great Plains. U. S. Dept. Agr. Bui. 878, 47 p., 3 pi., 2 fig. 
1920. 
Fig. 4. — Heads and glumes of two important varieties of 
spring wheat grown on the Belle Fourche Experiment 
Farm : 1, Marquis common wheat ; 2, Kubanka durum 
wheat. 
