-50-. 
■ U m N UM| R y2'R ° F F LORIDA 
, HI ■111 
3 1262 09244 6995 
only 1 of 12 fields surveyed was populated by.,a potentially injurious 
number of weevils. Parasite cocoons were scarce but the high percentage 
of them alive indicated effective parasitization for 193^. 
Table l6. — Survey results^ Sioux County. Nebr.. sampled 
October 10-12. 1937 
Field-No. 
H. postica 
• adults 
B. curculionis cocoons 
Present 
Viable 
5 
6 
7 
8 
9 
10 
n 
12 
Number 


2.75 

.25 



.25 

.25 

Average ----- - : 
.0.29 
Number 
13.25 

U.75 
.50 

.25 

.50 
.25 
1.50 
1.25 
.25 
Number 
5.00 
2.25 


50 
.50 
.50 

1.88 
0.73 
OUTLOOK FOR WEEVIL DAMAGE IN 1938 
The fall survey pf 1937 showed that alfalfa weevil populations 
had increased generally 'in the infested territory since the fall of 1936. 
Most severe damage for 1938 is indicated for Box Elder County, Utah, and 
Jackson County, Oreg. , where from ho to 5Q percent of the surveyed fields 
to 33 percent of the fields are 
Utah, the several counties con- 
eastern Idaho, Eagle Valley in 
had damaging numbers of weevils. From 17 
menaced in Salt Lake and Sanpete Counties,' 
stituting the upper Snake River Valley of 
Baker County, Oreg., Douglas and Washoe Counties, Nev. , and Delta and Mesa 
Counties, Colo. Damage to approximately 10 percent of alfalfa fields is 
indicated for Sevier County, Utah, the lower Snake River Valley of western 
Idaho and eastern Oregon, Churchill County, Nev. , Montrose County, Colo. , 
and Sioux County, Nebr. 
