Corn Investigations 
129 
Table 53. — Relation of maturity of seed to yield yer acre . 
Hogue^s Yellow Dent corn , 1916 and 1917. 
Date 
of 
seed 
harvest 
Condition of grain 
Days 
since 
fertiliza- 
tion 1 
Weight 
of 100 
kernels 
Ratio weight 
of embryo 
to weight 
of kernel 2 
Germina- 
tion 
Yield per £ 
icre 
1916 
1917 
Av’ge 
Grams 
Per cent 
Bu. 
Bu. 
Bu. 
(1) 
(2) 
(3) 
(4) 
(5) 
(6) 
(7) 
(8) 
(9) 
Sept. 1 . . . 
Late milk stage . . . 
25 
17.5 
.105 
94 
73.2 
53.6 
63.4 
Sept. 8. . . 
Roasting ear 
32 
21.1 
.110 
96 
76.9 
51.1 
64.0 
Sept. 15 . . . 
Late roasting ear . . 
39 
24.8 
.103 
97 
73.2 
52.8 
63.0 
Sept. 22 . . . 
Denting 
46 
28.4 
.106 
97 
76.2 
53.8 
65.0 
Sept. 29 . . . 
Glazing 
53 
31.1 
.112 
97 
72.5 
55.5 
64.0 
Oct. 6 . . . 
Mature 
60 
31.6 
98 
74.3 
54.7 
64.5 
Number of renli cations 
2 
2 
iPollination occurred on July 31 and August 10 in 1916 and 1917, respectively. 
2 Data for 1917 only. 
EFFECT OF TIME OF SELECTION AND PRESERVATION OF SEED CORN UPON 
YIELD 
This test has previously been reported in Nebraska Agricul- 
tural Experiment Station Bulletin No. 163. The object was to 
determine the effect of the time of harvesting seed corn upon 
its yielding ability provided care is taken in selection to obtain 
equally high germination. Comparative yield tests were made 
in 1915, 1916, and 1917 of September, November, and March 
field selections made from Nebraska White Prize corn grown at 
the Experiment Station. The seed was carefully preserved in a 
dry, well-ventilated place upon being harvested. Only those 
Table 54. — Relative yields from seed corn selected at various 
dates during the fall and winter. 1915-1917. 
Date of seed selection 
Duplications 
each year 
Yield per acre 
1915 
1916 
1917 
Three-year 
average 
(1) 
(2) 
Bu. 
(3) 
Bu. 
(4) 
Bu. 
(5) 
Bushels 
(6) 
September 
4 
66.6 
36.1 
38.3 
47.0 
November 
4 
65.9 
37.3 
41.6 
48.3 
March 
4 
64.7 
42.1 
42.6 
49.8 
Check 
4 
66.3 
40.3 
41.1 
49.2 
1. The seed was harvested about the 15th of each month. 
2. The check seed was harvested from the same field while husking in 
November. 
