-251- 
seasons ever experienced for red spiders, and the • damage was intensified "by 
lack of irrigation. Baker sfield lias completed the spraying of 23,051 shade 
trees. 
CEREAL AND f 03 AGE-CROP I IT SEC T S 
WHEA T 
HESSIAN FLY ( Phytophaga destructor Say) 
General. P. N. Annand (September 18); The hessian -fly is in general at a 
low e"bb in the main winter-wheat regions. Drought has largely kept this 
insect in check. Areas in which scattered fields suffered more or less 
injury this year are southeastern Kansas, southern Missouri, east-central 
Indiana, middle Tennessee, northern Ohio, south-central Pennsylvania, 
and central Forth Carolina. With weather conditions favorable to the fly, 
moderate to severe infestations may develop this" fall in these areas. 
In the remainder of the winter-wheat belt, comprising Nebraska, northern 
and middle Kansas, northern Missouri, all of Illinois, western and south- 
eastern Indiana, southern Ohio, western, northern, and eastern Pennsyl- 
vania., Maryland, Delav/are, and Virginia, there appears to be little pros- 
pect of serious general infestation this fall. 
The following table gives the percentage of infestation foimd by the 
survey made at harvest time: 
Average : 
Average 
Area : 
infestation: 
: ; Area 
; infestation 
Nebraska : 
: Indiana, 
Soutliv/est : 
1 : 
: Northwest 
: 5 
South-central : 
1 : 
: Northeast 
: 16 
Southeast 
1 , : 
: Central 
: 7 
: : East-central 
: 30 
Kansas 
: Southwest 
: 8 
•Northwest 
1 : 
: Southeast 
k 
North- central 
2 : 
South-ce-tral 
1 : 
: Ohio 
Northeast 
2 : 
: Northern 
: 21 
Southeast 
10 : 
: South :n 
: 9 
Oklahoma 
: Kentucky 
North-central 
: 1 : 
: North-rest 
: 7 
Northeast 
2 : 
: Southv/est 
: 10 
• North-central 
:' 7 
