26 
BULLETIN 878, IT. S. DEPARTMENT OE AGRICULTURE. 
RESULTS AT SHERIDAN, WYO. 
The Sheridan Field Station is located in northern Wyoming at an 
altitude of 3,800 feet on dark clay-loam soil. The average annual 
precipitation during the past 23 years was 14.72 inches. The cereal 
experiments were started in 1917 and have been conducted in coop- 
eration with the Office of Dry-Land Agriculture. Owing to an 
extreme drought in the season of 1919 the spring-wheat crop was an 
almost complete failure. The annual and average yields of the 
spring-wheat varieties are shown in Table X. 
The experiments have been conducted only three years, in one of 
which there was crop failure, so that definite conclusions can not be 
drawn from the present results. There is very little difference be- 
tween the average yields of the common and durum wheats. The 
Marquis variety has produced an average yield of 12.6 bushels per 
acre. The Peliss, with 13.1 bushels per acre, has the highest average 
yield of the durum varieties and is the only one that has outyielded 
Marquis. Three varieties of common wheat have outyielded Mar- 
quis, but none of them by a significant quantity. 
Table X. — Yields of 12 varieties of spring wheat grown at the Sheridan (Wyo .) Field 
Station during the 3-year period from 1917 to 1919, inclusive, compared with the Mar- 
quis variety for the years grown. 
[Data obtained in cooperation with the Office of Dry -Land Agriculture.] 
C T. No. 
Yield per acre (bushels). 
Class, group, and variety. 
1917 (3 plats). 
1918 (3 plats). 
1919 
(3 plats). 
Average. 
1917 to 
1919. 
Difference 
from Marquis. 
Common. 
Fife: 
3641 
1517 
2873 
3697 
2874 
4324 
3081 
4323 
4064 
1440 
4063 
1584 
6.7±1.8 
9.3±1.6 
7.3±3.0 
10.0±0.8 
7.0±4.4 
10.7±1.8 
9.3±1.6 
12.3±2.2 
10.0±1.6 
8.6±2.4 
8.7±2.2 
12.7±2.0 
31.1±1.1 
29.6±3.0 
26.1±2.0 
30.3±1.3 
27.5±1.2 
29.7±2.5 
23.6±1.3 
22. 6± .9 
20.4±1.0 
27.5±3.7 
25.1±1.8 
26.6±2.3 

.1 
.1 
.1 

.2 
.1 


.2 
.1 
.1 
12.6 
13.0 
11.2 
13.5 
11.5 
13.5 
11.0 
11.6 
10.1 
12.1 
11.3 
13.1 
+0.4±0.9 
-1.4±1.4 
+ .9±1.0 
Bluestem: 
-l.lil.O 
Preston: 
+ .9±1.2 
-1.6±2.4 
Miscellaneous: 
Prelude 
-1.0±3.0 
dukum. 
Kubahka: 
-2.5±3.3 
- .54:1.2 
-1.9±1.6 
Peliss: 
+ .5±2.0 
RESULTS AT ARCHER, WYO. 
The Cheyenne Field Station at Archer, Wyo., is located on a fairly 
sandy loam containing some gravel. The altitude is almost exactly 
6,000 feet above sea level. The normal rainfall is only 13.60 inches. 
