SIZE OF POTATO SETS. 
33 
Station, for the years 1915 to 1918, inclusive, shows a marked corre- 
lation with respect to both the weight and character of set used and 
the stems produced. 
Table 17. — Stem-frequency correlations of Irish Cobbler potatoes at the Virginia 
Truck Experiment Station in the Jt-xjear period, 1915-1918. 
Kind of set 
Weight 
of set. 
Number of sterns (frequency of the 
same 
number of stems per set) . 
planted. 
i 
2 
3 
4 
5 
6 
7 
8 
9 
10 
11 
12 
Whole: 
2-ounce 
Ounces. 
2 
3 
4 
5 
6 
1 
1J 
2 
% 
3" 
3 
1* 
n 
ij 
29.1 
11.3 
5.2 
1.2 
1.9 
100.0 
65.4 
41.5 
17.4 
22.5 
139.2 
146.3 
127.4 
98.3 
100.0 
71.5 
33. 1 
20.5 
9.8 
152.3 
138.9 
120.5 
111. 2 
88.8 
136.7 
113. 6 
128.7 
133.4 
102.0 
110.3 
66.2 
43.4 
27.2 
41.2 
69.7 
93.5 
117.9 
104.3 
21.1 
37.1 
36.1 
55. 8 
51.8 
73.0 
85.9 
82.5 
58.1 
6.5 
21.2 
34.5 
39.1 
63.8 
2.4 
3.0 
7.8 
11.4 
14.1 
24.2 
67.5 
75.3 
74.3 
1.0 
7.4 
32.2 
49.3 
68.7 
2.0 
1.9 
8.2 
19.3 
41.1 
0.4 
1.3 
7.9 
13.6 
4-ounce 
0.4 
.6 
3.8 



6-ounce - 
Halved: 
2-ounce 
1.1 
0.4 
3-ounce 
3.5 
8.9 
12.6 
15.5 
.6 
.9 
.7 
1.8 
5.1 
.4 
.4 
6-ounce 
Quartered: 
1.1 
These data, as presented in Table 17, show a relatively uniform 
progression in stem frequency in whole sets. The greatest frequency 
in 2-ounce whole sets, while actually shown as three stems, might 
readily be regarded as falling between two and three stems. In 
3-ounce whole sets the greatest frequency occurred at three stems. 
The 4-ounce and 5-ounce whole sets produced four stems most 
frequently, while in 6-ounce whole tubers the greatest frequency 
was at five stems. 
Table 18. — Stem-frequency correlation of Irish Cobbler potatoes at Presque Isle, 
Me., in the 4-year period, 1915-1918. 
[The greatest frequency occurrence 
of whole tubers 
is marked 
in each case with 
i star (*) .] 
Kind of set planted. 
Weight 
of set. 
Number of stems (frequency of the same number of stems per set). 
1 
2 
3 
4 
5 
6 
7 
8 
9 
10 
11 
12 
13 
14 
15 
Whole: 
Ounces. 
2 
3 
4 
5 
6 
1 
1* 
2" 
2- 1 . 
3" 
1 
1 
11- 
4 
5.7 
1.4 
~~.~5 
40.4 
14.5 
5.0 
4.0 
1.3 
80 1 
42.6 
14.5 
2.4 
1.0 
.7 
118.5 
77.7 
42.8 
27.8 
14.4 
19S 4, 
*83.7 
44.9 
19.8 
8.0 
2.3 
36.1 
110. 5 
82.5 
65.2 
62.4 
75.1 
78.2 
92.1 
90.6 
82.0 
48 4 
22.2 
49.3 
*58. 5 
*65.0 
45.1 
8.7 
33.7 
48.0 
63.0 
*59. 2 
4.7 
14.9 
35.6 
43.0 
52.2 
1.7 
4.7 
17.5 
29.0 
36.1 
3 
*71. 5 59. 4 
43. 3 56. 1 
27.0 41.0 
15. 4 37. 5 
6.7 1.0 
61.5 25. 7 
92. 4 48. 5 
90. 4 68. 2 
96. 3 64. 8 
4.4 
11.8 
14.5 
28.1 
1.3 
5.7 
4.0 
13.7 
~6.~7 
3.0 
5.0 
~6.~3 
1.0 
3.7 
"6." 7 
0.3 
6-ounce 
Halved: 
2-ounce 
.3 
6.8 
18.4 
29.3 
39.6 
2.4 
.4 
1.5 
1.4 
2.3 
6.7 
12.1 
16.5 
.3 
3.7 
3.0 
4.0 
.7 
"Vl 


:::: 



5-ounce 
---- 
Quartered: 
14.6 
22. 1 
33.2 
44.6 
1.4 
6.3 
4.5 
9.7 
4-ounce 
50i2141.9 
39.3129.4 
.9 
6-ounce 
