- S3S5*- 
Illinois W. P. Flint (September):! Snergence of the fall brood of the Hessian 
fly occurred at about 'the usual date. In northern Illinois 60 to 75 
per cent cf the fly had emerged by September 12. In central Illinois 
emergence began about September 8-9. • Eggs were present in small num- 
bers by the 10th and in moderate nrfabers on the I7th. As stated in 
the last report, enough fly is present in all sections of the State to 
cause moderate to heavy infestation to volunteer and early-sown wheat. 
Nebraska M. E. S-venk (September 8): Two Hessian fly observation stations have 
been located in this State, one in Saunders County and the other in 
Gage County. The main emergence began at both stations September 3. 
The counts at the two stations for the period August 31 to Septem- 
ber 25, are as follows: 
Station No. 1 (Wahoo) 
Station No. 2. (Beatrice) 
Percent emerged puparia 
on 100 stubble plants 
Aug. 31 
C 
Sept. 1 
rain 
• • 2 
6.4 
3 
17.3 
4 
17.4 
5 
26.2 
6 
26.3 
7 
DC A 
8 
36. 5 
9 
42.3 
10 
46.9 
11 
49.7 
12 
52.7 
13 
51.1 
14 
57.5 
15 
58.1 
16 
52. 5 
17 
59.1 
IS 
71.8 
19 •• 
7227 
20 
72.4 
21 
75.4 
22 
78.5 
23 
81.5 
24 
85.7 
25 
88.1 
No. of eggs on 
100 wheat -olants 
Percent emerged puparia 
on 100 stubble plants 

: Aug. 31 


Sept. 1 



: 
O 
2.9 
: 
4 
3.1 
C 
5 
5.3 

6 
4.7 
23 
7 
8 ; 7 
45 : 
8 
8.8 
18 .: 
9 
11.4 
17 
10 
15.2 
rain 
• 11 
15.2 
■ 
12 
17,1 
20 
13 
20,6 
3 
14 
24.6 
285 
15 
25.6 
80 
: 16 
27.9 
44 
: 17 
CO. t-> 
721 
: 18 
29.0 
485 : ' : 
: 19 
33.3 
808 
: 20 
21.4 
622 
: 21 
30.5 
936 , 
22 
34.7 
839 
: 23 
25.0 
210 
: 24 
35.8 
735 
: 25 
38.7 
No. of eggs on 
100 wheat plants 



03 



.. 
:9 













100 
20 
20 
10 
Iowa 
M. E. Swenk (September 12): Indications now are that the fly-free 
date (or date of safe sowing) will come later this year thaniit did 
last year. The percentage emergence at the three field stations was 
reported as follows: 
Harrison flfirariifcgp 
Sepifc^S. -~-23J 
12 - 26 
17 - 36 
24 - 50 
Hen BJfcX&i un?^ 
Septv7. ,- -3ff 
11 - 45 
IS - 55 
24 - 65 
•r* 
-Sept. a .*- 20;.' 
10 - 22 
16 - 30 
24 - 42 
