246 
JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 13 
Table II— Summary of the Total Number of Eggs Deposited on Each Variety of Each Date of 
Planting Plot, Manhattan, Kans., 1913-1918 
Variety 
Planted 
1913 
1914 
1915 
1916 
1917 
1918 
Total 
Boone 
April 
15 
6 
2 
2 
1 
1 
17 
29 
County 
May 
1 
4 
6 
4 
0 
2 
10 
26 
White 
May 
15 
21 
10 
4 
7 
3 
3 
48 
June 
1 
54 * 
22 
4 
10 
1 
3 
94 
June 
15 
97 
206 
3 
11 
9 
178 
504 
July 
1 
341 
47 
Commer¬ 
April 
15 
19 
34 
6 
2 
1 
33 
95 
cial 
May 
1 
18 
19 
0 
1 
2 
3 
43 
White 
May 
15 
21 
34 
2 
9 
7 
4 
77 
June 
1 
92 
71 
3 
8 
4 
11 
189 
June 
15 
181 
391 
6 
13 
6 
90 
687 
July 
1 
349 
67 
Kansas 
April 
15 
13 
35 
4 
5 
6 
14 
77 
Sunflower 
May 
1 
1 
8 
3 
0 
15 
5 
32 
May 
15 
6 
13 
1 
3 
2 
4 
29 
June 
1 
29 
545 
1 
10 
0 
22 
607 
June 
15 
9 
258 
10 
16 
8 
209 
510 
July 
1 
618 
44 
Hildreth 
April 
15 
11 
7 
3 
0 
4 
23 
48 
May 
1 
22 
4 
2 
4 
2 
8 
42 
May 
15 
9 
13 
5 
1 
0 
3 
31 
June 
1 
109 
257 
3 
11 
5 
33 
418 
June 
15 
63 
928 
8 
17 
14 
212 
1242 
July 
1 
475 
98 
Table III— Summary 
of the Location of the Eggs on the 
Different Varieties with Relation 
TO 
the Date of 
Planting, 
Manhattan, 
Kans., 
1913-1918 
Variety 
Planted 
Leaf 
surface 
Silk 
Husk 
Tassel 
Stalk 
Total 
Upper 
Lower 
Boone 
April 
15 
18 
0 
2 
2 
1 
6 
29 
County 
May 
1 
8 
2 
10 
2 
2 
2 
26 
White 
May 
15 
15 
2 
12 
3 
0 
16 
48 
June 
1 
23 
4 
25 
10 
5 
27 
94 
June 
15 
234 
41 
91 
25 
40 
73- 
504 
Commer¬ 
April 
15 
21 
4 
53 
0 
5 
12 
95 
cial 
May 
1 
6 
6 
15 
1 
0 
15 
43 
White 
May 
15 
28 
5 
27 
0 
0 
17 
77 
June 
1 
62 
19 
2 
3 
2 
101 
189 
June 
15 
299 
66 
196 
6 
36 
84 
687 
Kansas 
April 
15 
12 
4 
47 
2 
5 
7 
77 
Sun¬ 
May 
1 
7 
1 
21 
0 
1 
2 
32 
flower 
May 
15 
9 
7 
7 
0 
0 
6 
29 
June 
1 
77 
32 
390 
43 
6 
59 
607 
June 
15 
137 
54 
142 
24 
42 
111 
510 
Hildreth 
April 
15 
8 
2 
13 
6 
6 
13 
48 
May 
1 
17 
5 
3 
0 
2 
15 
42 
May 
15 
13 
6 
4 
0 
1 
7 
31 
June 
1 
152 
28 
123 
19 
10 
86 
418 
June 
15 
349 
92 
562 
9 
83 
147 
1242 
Discussion of Experimental Data 
Number of Broods 
The number of generations of the earworm present annually in a 
locality is of special importance in a consideration of many control 
measures. From the literature quoted by Quaintance and Brues, 1 
the number of generations varies from one or two in Ontario to six 
or seven in southern Texas. Headlee 2 determined the actual number 
of broods in Kansas to be three, his conclusions being based on fre¬ 
quent egg counts made in the field during 1908 and 1909. The results 
1 Quaintance, A. L., and Brues, C. T. The Cotton Boll-worm, U. S. Dept. Agric., 
Bur. Ent., Bui. 50,155 p., 27 figs., 25 pi. 1905. 
2 Headlee, T. J., op. cit. 
