.SHERIDAN FIELD STATION, 1917 TO 1923 
17 
stations where stem rust has occurred Kota has proved very resistant 
to that disease. Stem rust has not developed on spring wheat at 
this station. Hard Federation, a short early-maturing variety, out- 
yielded Kota in 1923 by 6.5 bushels, but averaged only 0.2 bushel 
more for the 3-year period in which both varieties were under trial. 
OATS 
Annual and average yields of the oat varieties grown for one or 
more years of the 7-year period from 1917 to 1923, are shown in 
Table 13. The early Sixty-Day variety produced the best yields in 
the dry years 1917 and 1921. Apparently, owing to maturing earlier 
in 1923 and thereby escaping to a large extent the heat and dry 
weather of that year, the Sixty-Day outyielded the Victory, the best 
midseason variety, by nearly 30 bushels. In the other years except 
1917 and 1921 the midseason varieties produced the highest yields. 
For the 7-year period the Sixty-Day averaged 33.8 bushels per acre, 
as compared with 32.3 bushels for Golden Rain, the highest yielding 
midseason variety. White Tartar, a late side variety, averaged the 
least of the six varieties grown for the seven years. 
Table 13. — Annual and average yields of oat varieties at the Sheridan Field Station 
for the seven years from 1917 to 1923, inclusive 
C.I. 
No. 
Yields per acre (bushels) 
Average 
Group and variety 
1917 
1918 
1919 
1920 
1921 
1922 
1923 
1917 to 
1923 
1921 to 
1923 
Early: 
Sixty-Day _. 
165 
729 
134 
493 
714 
742 
2036 
732 
20.4 
21.5 
12.7 
11.3 
19.2 
46.2 
48.2 
55.4 
57.1 
59.4 





39.8 
36.3 
42.5 
49.8 
48.1 
7.1 
3.8 
2.7 
4.8 
2.9 
2.7 
39.2 
32.5 
42.9 
54.6 
42.1 
41.3 
83.8 
55.0 
46.7 
48.4 
42.5 
54.2 
54.2 
25.0 
33.8 
28.2 
29.0 
32.3 
30.6 
43.4 
Albion (Iowa No. 103) 
Midseason: 
Swedish Select 
30.4 
30.8 
Golden Rain 
35.9 
Silvermine 
29.2 
32.7 
Early Mountain No. 8 
Late (side): 
White Tartar (White 
13.1 
53.5 

40.4 
2.7 
30.4 
23.6 
19.4 
BARLEY 
Table 14 shows the yields of barley varieties each year, together 
with the average yields for the two periods from 1917 to 1923 and 
from 1921 to 1923. Trebi, a 6-rowed variety, had the highest average 
both for the longer and the shorter period. White Smyrna, a 2- 
rowed variety, outyielded Trebi in three years, 1917, 1920, and 1921, 
and averaged 22.9 bushels for the 7-year period, only 2.4 bushels less 
than Trebi. In general, the difference in yield between the better 
producing varieties was small and varied from year to year. Trebi 
m addition to averaging better than White Smyrna has a longer 
straw and is handled more easily. 
FLAX 
The varietal trial with flax ran only four years. It was discon- 
tinued after 1920 because of consistently low yields and the lack of 
sufficient land suitable for the work. The yields are shown in Table 
