
a 
gation of 880,000 cubic feet of storage at Tidewater, Va. The dosage 
of liquid hydrocyanic acid was 1 pound per 1,000 cubic feet, and test 
lots showed a complete kill of insects to a depth of 6 inches in the 
hogsheads." 
Birds and rodents destroy pea weevils.-- "In collecting peas 
meom une ground," reports A. 0. Larson, Corvallis, Oreg., "we have no-— 
ticed that rodents will open peas and eat the contained weevils, leav— 
ing the peas. This is especially noticeable near the holes of the 
Douglas ground squirrel (Citellus douglassi (Richardson) ). Mice are 
fond of weevils in the warehouse. Violet-green swallows may be seen 
congregated over badly infested pea fields on warm days when the weevils 
are flying about. The swallows undoubtedly get great numbers of pea 
weevils in the fall." 
On community cooperation in combating the pea weevil, Mr. Larson 
says: "The pea growers around Barlow have been converted to the ad-— 
vantage of burning pea stubble before the weevils emerge. Their low 
rate of infestation is a good demonstration of how the infestation may 
be held down by burning. This year it was made a community movement. 
* * * With the precautions (described) and the number of men present 
the fire did a good job in the pea fields without spreading to anything 
else. A total of 15 small fields, or about 200 acres, were thus burned." 
Federal pea grades established in Idaho.-- T. A. Brindley, Mos- 
cow, Idaho, reports that "Federal pea grades become a reality in the 
@eeturict in August. -. The establishment of the grades places a decided 
emphasis on weevil-—damaged peas and also increases the necessity for 
(and the interest of growers in) adequate control measures. The wee— 
vil tolerance set for the various grades is as follows: Uisv Extge 
Sees OF percent; U.S. No. ‘1, 0.5 percent; U.S. No. 2, 1.0 percent; 
ena U.S. No. 3, 1.5 percent, The percentage is determined by actual 
count." 
Preoviposition of pea weevil in Idaho.-~- Mr. Brindley says that 
"The last of the females from the 1931 crop which was under observation 
for egg laying died on August 4, after having laid a total of 467 eggs. 
This is especially interesting for, in addition to proving that weevils 
can survive for two crop seasons, it shows that these weevils are capable 
of laying large numbers of eggs." Daily observations on 25 adults taken 
directly from last year's crop of peas and placed on pea blossoms and pods 
showed 14 days to be the longest and 4 days the shortest time that elapsed 
until the first eggs were laid, the length of time being apparently de- 
pendent largely on weather. 
Oviposition of fall-emerging pea weevils in Oregon.—~ At Corval- 
lis, Oreg., as reported by Mr. Larson, it was found "that some weevils 
which emerged this fall have already been laying eggs. Several weevils 
from peas grown this year were put in a vial with blossoms and pods on 
