40 
BULLETIN 1340 ? U. S. DEPARTMENT OF AGRICULTURE 
(4) Published reports of the Office of Experiment Stations, the 
Office of Public Roads and Rural Engineering, and the Bureau of 
Public Roads of the United States Department of Agriculture. 
(5) Published and unpublished reports from the Bureau of Recla- 
mation, United States Department of the Interior. 
(6) Irrigation Requirements of California Lands, Appendix B, 
Water Resources Report, California Department of Public Works. 
Table 5. — Showing effect of fertility on yield produced and icater requirements 
in Idaho, 1910-1913 
Crop 
Locality 
Area 
Depth 
of 
water 
ap- 
plied 
Yield 
Class of soil and previous 
treatment 
Year 
Per 
acre 
Per 
acre- 
foot 
1911 
Dicklow wheat. . 
do 
do 
do 
do. 
do 
Oats 
Filer 
Acres 
3.59 
5.25 
5. 06 
.769 
8.27 
6.09 
4.98 
4.C3 
2.37 
4.15 
.165 
13.36 
.33 
.49 
.31 
.74 
.69 
.96 
Fed 
0. CC5 
2.15 
1.44 
1.84 
1.16 
1.21 
.64 
2.20 
1.076 
1.89 
1.04 
2.47 
2.04 
2.7 
1.52 
2.75 
.64 
.81 
Bushels 
63.2 
38.0 
67.2 
26.3 
82.9 
24.1 
76.5 
63.9 
73.0 
50.8 
54.5 
31.2 
106.3 
66.0 
90.0 
32.8 
39.4 
23.0 
Bushels 
99.5 
17.7 
46.6 
14.3 
71.5 
19.9 
119.0 
SO. 5 
68.0 
26.9 
52.3 
12.6 
52.2 
24.4 
59.3 
11.9 
61.6 
28.4 
1911 
Buhl 
First crop after clearing. 
Clay loam manured with 
sheep manure. 
Raw sagebrush clay loam. 
Alfalfa sod manured. 
Fourth year from grain on 
raw soil. 
1910 
1910 
do 
1912 
1912 
Kimberley 
Buhl 
1911 
Oakley 
Twin Falls 
Boise 
Richfield... 
1911 
1911 
1911 
do 
do 
do 
Wheat 
Third crop from sage- 
brush, unfertilized. 
Two years from clover sod. 
Two years from sagebrush. 
Two years from clover sod. 
Cropped 10 years without 
fertilization. 
Manured. 
Fourth crop from brush, 
no fertilization. 
First year from alfalfa sod. 
Fourth crop from brush, no 
fertilizer. 
Manured lightly. 
Second crop from sage- 
brush. 
1912 
Boise 
Meridian 
Gooding Experi- 
ment Station. 
do 
do 
do 
do 
do 
1912 
1912 
1913 
1912 
1913 
1912 
1910 
do 
Big Four oats 
do 
Coast barley 
do 
Turkey winter 
wheat. 
do 
Table 6. — Monthly and seasonal net water requirements of the vdri&ui 
visions of the Great Basin 
subdi- 
No. 
of 
divi- 
sion 
Description of division 
Monthly percentages of total seasonal net 
requirements 
Sea- 
sonal 
net 
water 
require- 
ment 
in acre- 
feet per 
acre 
Mar. 
Apr. 
May 
June 
July 
Aug. 
Sept. 
Oct. 
1 
Bear River basin in southeastern 
Idaho and northern Utah 
8 
10 
10 
14 
14 
16 
16 
14 
14 
15 
14 
10 
25 
24 
23 
22 
20 
18 
20 
22 
24 
25 
24 
26 
30 
28 
28 
26 
22 
20 
20 
26 
28 
30 
26 
28 
22 
20 
22 
20 
18 
18 
18 
20 
20 
20 
21 
18 
11 
14 
14 
10 
12 
10 
10 
12 
12 
10 
12 
8 
4 
4 
3 
2 
6 
5 
4 
4 
2 
2.0 
2 
Utah Lake and Great Salt Lake 
Valleys south of Weber River basin . 
2.2 
3 
2.1 
4 
Irrigable lands of southwestern Utah. 
Irrigable lands of southern Nevada... 
6 
8 
10 
10 
2 
1.8 
5 
1.7 
6 
Antejope Valley and Mohave River 
3 
2 
1.8 
7 
8 
Mono, Owens and Inyo- Kern valleys ' 
Walker River basin 
2.1 
2.0 
9 
Truckee River and Carson River 
2.1 
10 
Humboldt, Quinn, and White River 
2.0 
11 
3 
4 
1.7 
12 
Malheur Lake, Harney Lake, and 
1.5 
See Irrigation Requirements of California Lands, Bui. No. 6 Calif. State Dept. of Public Works. 
