14 
BULLETIN 222. U. S. DEPARTMENT OF AGRICULTURE. 
barley was plowed under instead of rye, with the result that there 
was a sharp decrease in yield. 
A profit was realized from all the methods under triai. The largest 
profit, $9.50 per acre, was on disked corn ground. Spring plowing 
shows a profit of $6.15 per acre, while the average profit from green 
manure was S3. 45. 
Table VI. 
Yields and cost of production of barley by different methods at the Huntley 
Field Station, 1918 and 1914. 
Treatment and previous crop. 
Number 
of plats 
averaged. 
Yield per acre (bushels). 
1913 
1914 
Average. 
1 
4 
24.5 
23.2 
34.6 
45.7 
29 6 
34.5 
Green manured: 
Rye 
1 
1 
19.6 
36.3 
55.6 
63.6 
37 6 
50.0 
2 
28.0 
59.6 
■43.8 
24.7 
48.1 
36.4 
Summary of Yields and Digest of Cost. 
Tillage treatment. 
Previous crop. 
Values, etc. 
(average per 
acre). 
Tillage treatment. 
Yields (average per acre). 
Spring 
plowed 
(1 plat). 
Disked 
(4 
plats). 
Green 
ma- 
ured(2 
plats). 
Small 
grain 
(1 
plat). 
Corn 
plats). 
Spring 
plowed 
(1 plat). 
Disked 
(4 
plats). 
Green 
ma- 
nured 
(2plats) 
Yields of grain: 
1913 bushels.. 
1914 do.... 
24.5 
34.6 
23.2 
45.7 
28.0 
59.6 
24.5 
34.6 
23.2 
45.7 
Crop value, 
cost, etc. : 
Value... 
Cost 
Profit. 
$12. 14 
5.99 
S14. 15 
4.65 
SI 7. 96 
14.51 
29.6 
34.5 
43.8 
29.6 
34.5 
6.15 
9.50 
3.45 
WILLISTON FIELD STATION. 
The results of five years are available from Willis ton, N. Dak. In 
two of these years the yields were heavy, one year they were fair, and 
two years they were very poor. 
Between the fall and spring plowing of barley stubble, there is 
little difference to be noted, except in 1912, when fall plowing was 
much the better. Between barley and oat stubble plowed in the 
spring, the only year that showed a significant difference was 1914, 
when the advantage was with the oat stubble. The crop on sum- 
mer tillage was every year better than that following either oats 
or barley. For three years summer tillage yielded heavier than 
disked corn ground and for two years the reverse was the case. The 
high yield together with low cost combined to make disked corn 
ground show the greatest profit, $6.63 per acre. The higher cost of 
summer tillage reduced the profit from it to 41 cents per acre. Both 
fall and spring plowing show small profits. 
