68 
Research Bulletin No. 3 
tions of the subsoil were not as numerous as those in the second 
foot. These two plants would doubtless under more favorable 
temperature conditions have continued a normal development. 
It seems probable that neither of the two plants which dropped 
out of competition early had developed roots below the second 
foot. 
TWO CYLINDERS WITH MOISTER SOIL NEAR THE SURFACE. Cylin- 
ders VII and VIII were filled like V and VI described above 
(page 61). 
The four plants in VII made the most vigorous growth of 
all the Kubanka wheat until early in May. On May 7 they bore 
10 tillers in all and five sheaths were swelling. Ten days later 
the awns on one were showing but after this no growth was 
made, the plants slowly dying until killed by the high tempera- 
ture of June 12. Roots had formed in abundance in all parts of 
the subsoil and the free water had been exhausted. 
The plants in VIII on March 18 had 5 tillers while in none of 
the other five cylinders had more than a single tiller appeared. 
The plants made little progress from that date until the early 
part of May when they seemed to take on new life. On June 8 
one spike was out and two other spikes were partly out, but all 
the plants appeared to be dying. On June 12 they died without 
having formed any grain. Very few roots had developed below 
the second foot and none below the third. There was an abun- 
dance of free moisture in the subsoil, even more than in XXII, it 
steadily rising from 3.3 per cent in the second foot to 11.9 in the 
sixth, altho the first foot had no free water. 
MILO. 
The seed used was from a good head taken in October, 1909, 
from a field near Cuervo, New Mexico, where a very severe 
drouth had prevailed thruout the growing season. 
The series of 6 cylinders was similar in all respects to those 
employed with the wheats. In each cylinder eight seeds were 
planted. On February 28, twenty-three days after planting, 
when the milo plants were from 4 to 7 inches high, the number 
was reduced to the most vigorous three in each cylinder. The 
plants in the different cylinders were much alike in growth until 
March 19, when those in XII wilted somewhat during the hottest 
part of the day. On that day the number in each cylinder was 
again reduced, this time to the one most vigorous plant in each 
cylinder. The two lots of thinnings were dried and their weights 
included in those of the total dry matter reported in Table 15. 
As in the case of the wheat series, little difference among the 
plants in the different cylinders was observed during the first 
month. 
