176 
Journal of Agricultural Research 
Vol. VII, No. 4 
Table VI .—A comparison of transpiration during the 10-day period August 2 to 11,1914, 
with total transpiration of crop 
Crop. 
Total transpi- 
Transpiration during 10-day 
period Aug. 2-11. 
ration. 
Actual. 
Percentage of 
total. 
Cowpea.. 
Kgm. 
1 X2 
Kgm. 
IO. 4 
9 
Lupine. 
76 
12. 4 
16 
Millet, Kursk.. 
89 
15. 2 
17 
Millet, Siberian. 
IOO 
16. $ 
17 
Corn, Northwestern Dent. 
112 
14.4 
13 
Corn, Algeria. 
137 
27. 0 
20 
Sorghum, Minnesota Amber. 
Sorghum, Dakota Amber. 
130 
126 
23-4 
21. 6 
18 
17 
24 
Sudan grass tin inclosure)... 
XIO 
26.8 
Sudan grass (in open). 
88 
24.4 
28 
Amaranthus. 
16 
9.4 
59 
Alfalfa, Grimm, E23-20-52. 
60 
28.3 
47 
Alfalfa, Grimm, E23. 
70 
33-2 
47 
Alfalfa, Grimm, E23 (in open). 
67 
32. 6 
49 
Alfalfa, Grimm, 162-98A. 
118 
S 2 - 9 
45 
Similar determinations of the transpiration of different crops in 1915 
during a 10-day period from July 7 to 16 are given in Table VII. The 
transpiration during this period ranged from 23 to 31 per cent of the 
total. In other words, one-fourth or more of the total water used by 
these crops was transpired during these 10 days. With the exception 
of the flax varieties the crops showing the highest transpiration during 
this period were those which matured earliest. 
Table VII .—A comparison of transpiration during the 10-day period July 7 to 16, iqi $, 
with total transpiration of crop 
Crop. 
Total transpi¬ 
Transpiration during 10-day 
period July 7-16. 
ration. 
Actual. 
Percentage of 
total. 
Wheat, Kubanka. 
Kgm. 
85 
Kgm. 
20 . 5 
24 
Wheat, Galgalos. .. 
Si 
21. 7 
27 
Wheat, Washington Bluestem. 
24. I 
23 
Wheat, Turkestan. 
hi 
29. O 
26 
Wheat, Marquis.. .... 
88 
22. 6 
25 
Wheat, Kubanka. 
108 
24. 6 
23 
Wheat, Preston. 
126 
28.6 
23 
Oat, Swedish Select. 
148 
3 8 -3 
26 
Oat, Burt. 
103 
3 °- 3 
29 
Barley, Hannchen. 
106 
3 i- 5 
30 
Rye, Spring. 
95 
22. 8 
24 
Flax, North Dakota (C. I. 13). 
86 
25. 2 
29 
Flax, North Dakota (C. I. 19). 
1x4 
34-9 
31 
Flax, Smyrna. 
121 
33-4 
28 
