-3^- 
RE SUITS 
Results of the 1937 fall survey are grouped "by States and tabu- 
lated "by districts, each tabulation "being accompanied "by a brief dis- 
cussion. All averages in the succeeding tabulations have reference to 
areas of 1 square foot. It has also "been considered helpful to include 
a "brief summary of the extent of weevil damage which occurred in each 
State during the growing season of 1937 • 
OREGON 
First-crop damage "by the alfalfa weevil in 1937 amounted to 10 
and 35 percent, respectively, of fields in Jackson County and in Eagle 
Valley, Baker County. Economic loss, however, was slight in "both areas, 
larval feeding "being largely restricted to the tips of alfalfa plants. 
In Eagle Valley (table l) one-sixth of the alfalfa fields surveyed were 
populated by a menacing number of weevils. Additional injury may de- 
velop in hillside fields occupied by smaller weevil populations, because 
of poor growth and thin stands, as was .the case in 1937* 
Ordinarily the parasite population would be effective in minimiz- 
ing production of the new-generation adult weevils, which will form the 
basis of attack in 19^9, ^ u ^ *^ e late-cutting practice prevalent in this 
area largely nullifies the beneficial effects of parasitization. 
■ Table 1 Survey res ults, Eagle Valley, Baker Coun t y. Greg. . 
"sampled September 29. 1937 
Eield No. 
H. postica 
' adults 
: B. curculio} 
Present 
lis cocoons 
: Viable 
1 
o 
3 • 
U 
5 
r 
8 
9 
10 j 
11 
12 : 
Number 
: 1.00 
•75 
1.25 
1.00 
2.25 
1.25 
.75 
1.75 
2.75 
'0 : 
'1-75 

' Number 
! 3.50 
! 11.25 
7.00 
7-00 
2.25 
1.25 
3-75 
2.25 
13- 
8.75 : 
2.75 : 
2.75 : 
Number 
: 1.00 
: -75 
! 1.50 
: -75 
.25 
.50 
1.75 
•75 
U.25 
1-75 
.50 
.50 
"Average - : 
1.21 : 
5.^6 : 
1.19 
