July i, 1925 Productiveness and Deleterious Characters in Corn 
85 
sented different growing conditions, so that the combined data from 
them may be looked upon as representing the average reaction of 
these varieties to nine different cropping seasons. 
A summary of the data from these experiments is shown in Table 1, 
those from the prolific and nonprolific varieties being grouped sepa¬ 
rately. The prolific varieties averaged more than one ear per plant, 
and the nonprolific averaged less than one ear. It is evident from 
the data that the nonprolific varieties must have had a consider¬ 
able proportion of barren plants. The average relative yield of the 
prolific varieties was 9 per cent greater than that of the nonprolific, 
notwithstanding the fact that the ears contained less moisture 2 at the 
time the weights w r ere taken. The most prolific variety in the ex¬ 
periment also was the most productive, and all of the prolific varieties 
were more productive than any one of the nonprolific except variety 
No. 5. 
Table I .—Relative 'percentage yields of prolific and nonprolific varieties on nine 
farms in different parts of South Carolina in 1912 
Prolific varieties 
Nonprolific varieties 
Variety 
No. 
Perfect 
hills 
Rela¬ 
tive 
yield 
Moisture 
Ears 
per 
plant 
Va¬ 
riety 
No. 
Perfect 
hills 
Rela¬ 
tive 
yield 
Moisture 
Ears 
per 
plant 
7 
4 
3 
8 
Total.. 
5,933 
5,714 
5,938 
5,941 
Per cent 
119 
113 
109 
106 
Per cent 
16.20 
16.29 
16.04 
15. 81 
1.45 
1.29 
1.12 
1.28 
5 
2 
1 
10 
5,963 
5,528 
5,818 
6,052 
Per cent 
115 
100 
93 
88 
Per cent 
17.65 
17.97 
17.03 
17.70 
0.95 
.92 
.97 
.85 
23,526 
“112 L._.., “1.28 
1 ! 
23,361 
“103 j_ 
«. 92 
° Computed directly from the basic data. 
EXPERIMENTS IN GEORGIA IN 1915 
Varietal experiments were conducted on each of four farms near 
Thomasville, Ga., in 1915. The growing conditions on each farm 
were different, and the results may be considered as the average 
reaction from four cropping seasons. 
In planning these experiments it was the intention to include all 
of the varieties with outstanding characteristics that are commonly 
grown under climatic conditions similar to those under which the 
experiments were conducted. Twelve of the thirteen varieties in¬ 
cluded were studied carefully on the farms from which they were 
obtained in the fall of 1914, and the seed ears for planting were 
characteristic of the varieties. A summary of the data from these 
experiments is shown in Table II, the prolific and nonprolific varieties 
being grouped separately. 
As a class, the prolific varieties had larger yields, more ears per 
plant, smaller percentages of barren plants, smaller ears per pro¬ 
ductive plant, and fewer rows of kernels per ear, than did the non¬ 
prolific varieties. 
2 The moisture determinations were made from samples of shelled grain taken from each plat. They do 
not take into consideration the moisture in the cobs. As the yields are based on the weight of ear corn, 
no attempt was made to correct for differences in moisture. 
