36 
BULLETIN 214, U. S. DEPARTMENT OF AGRICULTURE. 
Table XVIII. 
Yields and cost of production of spring wheat by different methods at 
the Amarillo Field Station, 1908 to 1914, inclusive. 
Treatment and previous crop. 
Number 
of plats 
averaged. 
Yield per acre (bushels). 
1908 
1909 
a 1910 
1911 
1912 
1913 
1914 
Average. 
Fall plowed: 
Corn 
1 
2 
62 
8.5 
13.5 
14.0 


2.8 
5.7 
6.3 
10.0 
1.3 
4.3 
8.5 

1.2 
1.5 
1L7 
9.4 
11.9 
4.5 
Oats 
5 8 
Wheat 
8 1 
5 
12.5 
.7 
7.1 
4.6 
1.1 
10.8 
6.2 
Spring plowed: 
Corn 
1 
1 
cl 
8.0 
5.3 
16.2 



11.6 
6.8 
9.4 
9.3 
6.2 
6.3 
.5 
.2 

10.2 
3.3 
11.0 
6.6 
Oats 
3.6 
Wheat 
7.2 
3 
11.4 

9.3 
7.3 
.2 
8.2 
6 1 
Listed: Wheat 
1 
1 
1 
14.3 
16.2 
8.3 

4.0 

12.9 
11.3 
12.1 
4.7 
4.2 
6.3 
1.5 
.8 
1.0 
11.0 
12.3 
11.8 
7.4 
Subsoiled: Wheat 
8.1 
6 6 
Green manured: 
Rye 
1 
1 
14.2 
19.7 
4.3 

7.5 
11.4 
9.2 
8.7 
2.3 
2.5 
11.7 
10.7 
8.2 
8.8 
Total or average 
2 
17.0 
2.2 
9.5 
9.0 
2.4 
11.2 
8.6 
Summer tilled 
de 
16.3 
10.0 
18.7 
9.8 
8.1 
12.7 
12.6 
13.3 
2.1 
10.5 
7.2 
3.3 
11.2 
7.9 
Summary of Yields and Digest of Cost. 
Tillage treatment. 
Previous crop. 
Yields, values, etc. 
(average per acre). 
Fall 
plowed 
(5 plats). 
Spring 
plowed 
(3 plats). 
Disked 
(1 plat). 
Listed 
(1 plat). 
Sub- 
soiled 
(1 plat). 
Green 
manured 
(2 plats). 
Sum- 
mer 
tilled 
(6 plats). 
Corn 
(3 plats). 
Small 
grain 
(8 plats). 
Yields of grain: 
1908... bushels.. 
1909 do.... 
1910a do 
12.5 
.7 
11.4 

8.3 

14.3 

16.2 
4.0 
17.0 
2.2 
16.3 
10.0 
8.3 

13.7 
.9 
1911 do.... 
1912 do.... 
1913 do.... 
1914 do.... 
7.1 
4.6 
1.1 
10.8 
9.3 
7.3 
.2 
8.2 
12.1 
6.3 
1.0 
11.8 
12.9 
4.7 
1.5 
11.0 
11.3 
4.2 
.8 
12.3 
9.5 
9.0 
2.4 
11.2 
18.7 
9.8 
8.1 
12.7 
9.8 
5.6 
.5 
11.2 
9.0 
5.5 
1.0 
10.0 
Average 
6.2 
6.1 
6.6 
7.4 
8.1 
8.6 
12.6 
5.9 
6.7 
Crop value, cost of 
production, etc.: 
$4.34 
6.56 
$4.27 
6.09 
$4.62 
4.75 
$5.18 
5.55 
$5.67 
7.17 
$6.02 
14.61 
$8.82 
11.50 
Cost 
-2.22 
-1.82 
- .13 
- .37 
-1.50 
- 8.59 
- 2.68 
a Location of station changed in 1910; records not used. 
b One plat only to 1912. 
c Two plats averaged to 1911. 
d Only two plats were averaged up to 1912. 
None of the methods under trial show the production of spring 
wheat at a profit. More profitable crops are produced from a group 
of crops not treated in this publication — the grain sorghums. It 
appears from the evidence at hand that the spring-sown small grains 
are not destined to occupy a place of major importance in the agri- 
culture of this section. 
