14 
BULLETIN 133, U. S. DEPARTMENT OF AGRICULTURE. 
Table VIII. — Results obtained with potatoes on fall-irrigated land (Series VI) and on 
land not fall irrigated (Series VII) at the Scottsbluff Experiment Farm in 191 't and 
1913. 
Year and plat. 
Yield per acre (bushels) . 
VI. 
vn. 
Platl 
1912. 
120.0 
122.0 
US.© 
Plat 12 
121.9 
121.0 
119.5 
1913. 
Plat 5 
137.0 
120.0 
129.0 
Plat 10 
121.0 
128.0 
125 
ATerage results, 
124.5 
122.2 
or of fall irrigation . 
+ 
2. 3 
SUMMARY OF ALL CROPS. 
The more important figures previously given in connection with the 
six crops included in the experiment are briefly summarized in Table 
IX. This table states the number of years results have been secured 
with each crop, the number of plats which have been devoted to each 
crop during the period, the average yields of potatoes and sugar beets, 
and the average grain yields of the grain crops. The differences in 
favor of fall irrigation are also stated. In order to show the relative 
effect of fall irrigation on the six different crops, the yields given in 
the first part of the table are stated in percentages in the last three 
columns, where the yields obtained on the land which was not fall 
irrigated are considered as 100 per cent in each case. As in the pre- 
ceding tables, the figures in the columns headed "VI" relate to fall- 
irrigated land and those in the columns headed "VII" relate to the 
land which received no fall irrigation. 
Table IX. — Average and relative yields of six crops onfall-irrigated land (Series VI) and 
on land not fall irrigated (Series VII) at the Scottsbluff Experiment Farm. 
Number 
of years. 
Number of 
of plats. 
Unit of 
yield. 
Average yield per acre. 
Relative yield per acre 
(per cent). 
Crop. 
VI. 
VII. 
VI. 
VII. 
Gain by 
fall irri- 
gation. 
VI. 
VII. 
Gain by 
fall irri- 
gation. 
Wheat 
Barley 
Oats 
3 
3 
3 
2 
2 
2 
8 
8 
8 
4 
5 
4 
8 
8 
8 
4 
5 
4 
Bushel 
...do 
...do 
...do 
Ton 
Bushel 
33.3 
36.9 
83.8 
59.1 
12.3 
124.5 
27.8 
29.9 
72.8 
48.5 
10.7 
122.2 
5.5 
7.0 
11.0 
10.6 
1.6 
2.3 
119 100 
123 100 
115 100 
25 
If. 
Corn 
122 
115 
102 
100 
100 
100 
2? 
Sugar beets. . . 
Potatoes 
15 
2 
116 
100 
16 
