-486- 
Kessian fly survey at harvesttime 19 4l 
Fields 
Stems infested 
Area 
sampled 
Average 
Maximum 
Minimum 
Nebraska; l/ 
dumber 
Percent 
Percent 
Percent 
Southwestern 
23 
1 
2 
0 
S o u th— c entral 
25 
5 
20 
0 
Southeastern 
4o 
33 
100 
0 
Kansas : 
Mo r thves t e rn 
10 
3 
6 
0 
iTorth-central 
3S 
15 
78 
0 
Northeastern 
44 
29 
88 
0 
South-central * 
32 
15 
96 
0 
Southeastern 
29 
23 
72 
2 
Oklahoma; 
Northwestern — 
3 
0 
0 
0 
North— central 
33 
1 
8 
0 
Northeastern 
37 
3 
18 
0 
Mis sour ill/ 
26 
Nor thwe s tern 
19 
10 
0 
West-central 
29 
13 
34 
0 
Southwo s tern 
24 
30 
76 
0 
Northeastern 
28 
16 
86 
0 
East— central 
20 
li 
26 
0 
Southeastern 
12 
8 
54 
0 
Illinois : iy 
74 
Eastern and southern 
17 
0 
Michigan; 
0 
Southwestern 
32 
3 
10 
Southeastern 
39 
18 
50 
2 
Indiana: 
3^ 
Northern- 
138 
7 
0 
Central and southern 
218 
17 
74 
0 
Ohio : l/ 
l4 
Western and central 
- 
— 
— 
Northeastern 
— 
4 
— 
" 
Kentucky; 1/ 
26 
44 
Western 
17 
10 
Eastern 
28 
17 
52 
0 
