CROPS UNDER FALL IRRIGATION AT SCOTTSBLUFF. 
15 
As shown in Table IX, the average yields of all six crops were higher 
on fall-irrigated land than on land which was not fall irrigated, the 
average increase having been 16 per cent. 
SOIL-MOISTURE STUDIES. 
The soil-moisture conditions on the three wheat plats in each series 
were studied during the season of 1911. A 6-foot boring was taken 

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Fig. 2. — Average moisture content of soil to a depth 
of 6 feet on three wheat plats on fall-irrigated 
land and three wheat plats on land not fall 
irrigated at the Scottsbluff Experiment Farm, 
1911. 
Fig. 3.— Average moisture contentof soil to a depth 
of 3 feet on three wheat plats on fall-irrigated 
land and three wheat plats on land not fall 
irrigated at the Scottsbluff Experiment Farm, 
1911. 
from each of the three plats in each series seven times during that 
season, and the moisture content of each 1-foot section of soil was 
determined. The wheat plats on both series were irrigated twice 
during the season of 1911, on June 10 and July 5 and 6, and the plats 
in vSeries VI had been irrigated in the fall of 1910, as previously stated. 
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Fig. 4.— Average moisture content of surface foot of 
soil on three wheat plats on fall- irrigated land and 
on three wheat plats on land not fall irrigated at 
the Scottsbluff Experiment Farm, 1911. 
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Fig. 5. — Average moisture content of the sixth foot 
of soil on three wheat plats on fall-irrigated land 
and on three wheat plats on land not fall irrigated 
at the Scottsbluff Experiment Farm, 1911. 
The moisture content of the soil on the seven sampling dates is shown 
in figures 2, 3, 4, and 5. The average moisture content of the first 
6 feet is shown in figure 2 and that of the first 3 feet in figure 3, while 
figures 4 and 5 show the moisture content of the first foot and sixth 
foot, respectively. 
As shown in figure 2, the average moisture content of the first 6 
feet of soil was higher throughout the season on the fall-irrigated 
