BREEDING MILLET AND SORGO FOR DROUGHT ADAPTATION. 17 
Table X. — The water requirement (mean of 6 pots) at Newell, S. Dak., of selected strai?is 
of millet in comparison with a commercial variety. 
Variety and number. 
Water requirement. 
1912 1913 
1914 
Dakota Kursk (A. D. I. No. 3) 
Kursk (A. D. I. No. 13-3) 
Siberian (A. D. I. No. 4-3) 
Common millet 
239 ±3 
246 ±3 
244 ±4 
316±4 
293 ±3 
329 ±3 
326 ±2 
311±11 
303 ±7 
The results of these determinations at Newell show no consistent 
differences among the selected strains. The two strains of Kursk 
millet and Siberian millet gave the same water requirement within 
the limits of experimental error in 1912, but in 1913 there was a 
difference in favor of Dakota Kursk of 36 ±4 as compared with 
Kursk (A. D. I. No. 13-3) and 33 ±4 as compared with Siberian 
millet. In 1914 the water requirements of the two varieties measured 
(Dakota Kursk and Siberian, A. D. I. No. 4-3) were again practically 
the same. On the other hand, in 1912 all three of the selected 
strains had a water requirement much lower than that of common 
millet, a commercial variety. At Akron, Briggs and Shantz * found 
that the selected strains of millet differed in their water requirement 
When the entire season's growth was considered, Dakota Kursk 
(S. P. I. 34771) showed the lowest water requirement of the varieties 
and strains compared. Further comparison of the water requirement 
of these strains is evidently desirable. 
WATER REQUIREMENT OF DAKOTA KURSK MILLET IN SOUTH DAKOTA, COLORADO, 
AND TEXAS. 
The water requirement of Dakota Kursk millet (A. D. I. No. 3) 
has been measured for three years in South Dakota by the writer and 
in Colorado and Texas by Briggs and Shantz. The water require- 
ment shows considerable variation, depending both upon the latitude 
of the locality where the measurement was made and upon the 
character of the season. At Newell, S. Dak. (Table XI), the 
water requirement was 239 in 1912, 293 in 1913, and 311 in 1914. 
The lowest measurement recorded was 187, at Akron, Colo., in 1912; 
the highest 331, at Dalhart, Tex., in 1912. The average water 
requirement for the three years was 256 at Akron, 281 at Newell, 
and 306 at Dalhart and Amarillo. 
In the matter of seed production this strain of millet shows a very 
low water requirement. At Newell the water requirement, based on 
the grain, was 577 in 1912 and 661 in 1913. 2 The water requirement 
of Grimm alfalfa at the same place was 735 for these two years. It 
i Briggs, L. J., and Shantz, H. L. Op. cit., p. 38, 58. 
2 At Akron in 1312, Briggs and Shantz (op. cit., p. 26) obtained the remarkably low figure of 483 for 
the water requirement for seed production of Dakota Kursk millet (S. P. I. 34771). 
