BARLEY IN THE GREAT PLAINS AREA. 
21 
Table XII. — Yields and cost of production of barley by different methods at the Scotts- 
bluff Field Station, 1912 and 1914— -Continued. 
Summary of Yields and Digest of Cost. 
Tillage treatment. 
Previous crop. 
Yields, values, etc. (average 
per acre). 
Fall 
plowed 
(1 plat). 
Spring 
plowed 
(2 plats) 
Disked 
(lplat). 
Listed 
(lplat). 
Sub- 
soiled 
(lplat). 
Summer 
tilled 
(1 plat). 
Small 
grain 
(5 plats) 
Corn 
(1 plat). 
Yields of grain: 
1912 bushels. . 
1913 ! do 
23.5 
21.9 
31.3 
23.8 
24.8 
39.6 
23.2 
31.3 
1914 do.... 
4.4 
8.9 
5.8 
5.0 
5.2 
15.6 
6.5 
5,8 
14.0 
15.4 
18.6 
14.4 
15.0 
27.6 
14.9 
18.6 
Crop value, cost of production, etc.: 
Value 
$5.74 
6.46 
$6.31 
5.99 
$7.63 
4.65 
$5.90 
5.45 
$6.15 
7.07 
$11.32 
11.40 
Cost 
- .72 
.32 
2.98 
.45 
- .92 
- .08 
1 The crop of 1913 was a failure, due to poor seed. 
The highest yield in both years was from summer tillage. The 
average yield from this method is 9 bushels per acre greater than the 
average on disked corn ground, the next highest yielding method 
under trial. Between other methods there is little difference in 
yields, although in 1914 the spring-plowed oat ground appeared to 
have a decided advantage. Spring plowing, disking, and listing all 
show small profits, the greatest being from disking. Fall plowing, 
subsoiling, and summer tillage all show small losses. 
NORTH PLATTE FIELD STATION. 
In the eight years under study at North Platte, Nebr., there have 
been two heavy crops of barley, three light crops, two poor crops, and 
one failure from drought and grasshoppers. 
In the average of the whole series of years a small advantage 
appears in favor of fall plowing. There have been large differences 
in individual years of the series. The greatest difference in any one 
year has been in favor of fall plowing, but in the greater number of 
years there has been a smaller difference in favor of spring plowing. 
The greatest difference in favor of spring plowing over fall plowing 
was in 1909. Germination was much slower on the spring-plowed 
than on either fall-plowed or summer-tilled land, owing to the fact 
that the seed bed was not in as good shape. A late freeze caught 
the crop on the fall-plowed and summer-tilled land at a tender stage, 
while the crop on the spring-plowed plats, being slower, escaped 
almost entirely. The difference in yield between spring and fall 
plowing in that year was therefore due to a difference in stand. 
