414 
Journal of Agricultural Research 
Vol, I, No. s 1 
i 
Table XIX .—Moisture conditions and salt content of the soil in typical areas occupied 
by the principal plant communities —Continued. 
Plant community. 
Soil depth (feet). 
Sagebrush 
Kochia 
Shadscale 
Greasewood- 
shadscale 
Grass flat. 
Salt flat. 
{Artemisia 
tridentata). 
(Kochia 
vestita). 
(Atriplex 
confertifolia ). 
(Sarcobatus 
and Atri¬ 
plex). 
Salt grass 
{Distichlis 
spicata). 
Allenrolfea 
occtdentalis. 
Wilting Coefficient. 
7 * 7 
14. 0 
12.4 
13* 1 
18.5 
14. 5 
*5 
14.7 
16. 8 
14.4 
17-3 
12. 7 
3 . 
8.9 
18. 2 
18. 7 
14. 2 
18. 1 
11. 8 
4 . 
8.6 
i 7-3 
16. 6 
14. 6 
26. 7 
16. 5 
Moisture Content above or below Wilting Coefficient. 
-2. 5 
- 5*4 
-5.6 
-2.4 
+ 9*6 
+2. 2 
- .6 
-1.8 
5 * 2 
+ 3-6 
+ I 3 - S 
+6.1 
3 . 
“ 1-3 
-2. 5 
“ 5-0 
+ 5-7 
+11. 4 
+ 4-7 
4 . 
+1.0 
-2.4 
- 5 - 5 
+ 5 - 3 
+13-8 
+ 3-7 
Average.... 
- .8 
-3.0 
- 5-3 
+ 3 - 0 
+ 12. I 
+4. 2 
Salt Content. 
0. 03 
0.12 
0. 07 
0. 34 
1.07 
1. 26 
•03 
• 55 
•32 
.72 
•97 
1.11 
3 . 
*°5 
1. 02 
.78 
03 
. 76 
i -13 
4 . 
.07 
1.11 
•93 
i -15 
.64 
•94 
Average.... 
. 04 
. 70 
I 
• 52 ^ 
.81 i 
.86 
1. 11 
correlations with crop production. 
The capabilities of the principal types of land in Tooele Valley for crop 
production with or without irrigation are summarized in Table XX. 
Table XX.— Crop-producing capabilities of the land as indicated by a normal growth of 
the different types of vegetation. 
Type of vegetation. 
Is land capable of crop production? 
Without irrigation. 
With irrigation. 
Sagebrush. 
Yes. 
Yes. 
Yes; if alkali can be re¬ 
moved. 
Yes; after alkali is re¬ 
moved. 
Yes; after alkali is re¬ 
moved. 
Possibly, with drainage. 
No. 
Kochia. 
Precariously in years of 
rainfall above the nor¬ 
mal. 
Precariously; conditions 
rather more favorable 
than on Kochia land. 
No. 
Shadscale. 
Grease wood-shadscale. 
Grass flats. 
Probably not. 
Salt flats. 
No. 
