6 BULLETIN 1011, U. S. DEPARTMENT OF AGRICULTURE. 
have existed in this respect being concealed by the effects of the 
drought. Although the plants made a fair growth, attaining a 
height of 6 to 10 feet, they failed to produce ears, and no data upon 
yields could be obtained. 
WACO EXPERIMENTS. 
The results obtained at Waco, Tex., presented in Table I, show that 
the stands three weeks after planting varied from 56 per cent of a 
perfect stand for the dehulled class to 98 per cent of a perfect stand 
for the check. Plants grown from the dehulled seed and from the 
germs averaged two days later than the check in date of first pollen 
shedding. Differences in time of ripening were not apparent. Drought, 
sufficiently severe to reduce yields 50 per cent prevailed and may 
have prevented differences in maturity from becoming evident. In 
height of plants at maturity the check and starchless classes aver- 
aged the same, while the dehulled and the germ classes were slightly 
shorter than the check. The weight of ears from the mutilated lots 
is less than from the checks and the number of ears to the plant 
less except in the dehulled class. The differences in yield per plant 
are small but seem directly attributable to the mutilation of the seed. 
ROCKVILLE EXPERIMENTS. 
The results obtained at the Yarrow Plant Introduction Field 
Station, Rockville, Md.. in 1.917, presented in Table I, show that the 
stands two weeks after planting varied from 44 per cent of a perfect 
stand from the dehulled seed to 91 per cent of a perfect stand from 
the check seed. The number of days from emergence to pollen 
shedding and the dates of ripening indicate that the development of 
the plants was retarded by the injuries to the seed. In height of 
plants, the dehulled and germ classes were shorter than the check and 
the starchless slightly taller. The average weight of ears from t he- 
mutilated seed is less than from the check in every comparison. The 
number of ears to the plant is greater in the mutilated classes than in 
the -adjacent checks, with one exception. The average yields for 
each plant show reductions with but one exception, where one row 
from the germ class slightly outyielded the adjacent check row. 
The relative height of the plants from germs and those from entire 
seeds six weeks after emergence are shown in Plate II. 
e 
