' -362- 
Area Number of Number of Average per cent of 
localities samples culms - nd tillers 
infested 
Northern Ohio 4 24 10 
Southern Ohio 3 36 18 
Northern Indiana 40 71 7 
Southern Indiana 19 47 17 
Southern Illinois 6 19 47* 
Northern Kentucky 2 14 15 
Southern Kentucky 1 6 52* 
Southern Michigan 11 15 4 
Northern Tennessee 2 14 3 
Southern Tennessee 4 . ' 17 23* 
♦These averages show the infestations present in seeding- 
date plots sown in situations particularly favorable to 
heavy infestation, 
'.Vest-central J. R. Horton (September): In Missouri the average in- 
states festations ran below 25 per cent of the steins infested. 
Only in occasional fields were infestations high enough 
to affect the yield. In Kansas infestations were quite 
generally low, averaging but 10 per cent of the stems in 
the eastern portion and 14 per cent in the western portion 
of the State. Yields were not measurably affected by 
the fly except in Hiawatha in the extreme northeast portion 
and Colby in the extreme northwest portion of the State. 
On the other hand Nebraska infestations were in general 
exceptionally high, averaging 41 per cent of the stems 
infested. For all practical purposes the fly is absent 
from Oklahoma except in the northeastern portion of the State. 
The following table gives a summary of the season's survey work: 
Region Number of Number of .Vv erase per cent of 
localities samples culms infested 
Southern Missouri 10 24 21 
Central Missouri 28 49 19 
Northwestern Missouri 12 14 14 
. Southeastern Nebraska 4 ... 20 41 
Western Kansas 9 32 14 
2-stern Kansas 2 38 10 
Northern Oklahoma 5 47 4 
Kentucky ..'. ... Price (September 24): The Hessian fly is reported 
in the blueg 
infestation. 
in the bluegrass section. Stubble shows 10 p.nd 1- ier cent 
