Camas Prairie chronicle. [volume] (Cottonwood, Idaho) 1901-1917, 1916-02-18
WATCH FOR GRAIN WEEVILs.
How the Pests May Be Destroyed by
Timely Treatment.
Prepared by Ohio station.l

Timely Treatment.
prepared by Ohio station.l
The Ohio experiment station has re
ceiyed numerous inquiries concerning
the treatment for weeviI in stored
grain. The weather during the past
summer and fall has been very damp.
making stored grain liable to be much
higher in moisture content than in nor
mai years, This damp condition of the
wheat furnishes slN proper condition
for the various kinds Of grain weevil
to develop aud breed rapidly. Grain
soon becomes almost alive with vice.
wills. and unless they are destroyed
they will damage the grain seriously
In o short time. Weeyils often de-
stroy or render unfit for food from 2
to 20 per cent of the average Ohio
wheat crop. Treat your weevily grain
Immediately or cold weather may pre-
vent.
All of the insects in stored grain
known as weevil are killed by a treat
ment of carbon bisulphide, provided
the bins are tight and the temperature
is at Go to 20 degrees F. or warmer
Carbon bisulphide Is used at the rate
Of five to eight pounds for each 1000
cubic feet Of space in the grain bin;
hence bin IL by Il by7 feet will re-
quire five to eight pounds of carbon
bisulphide if it is tight and the tenn
perature around 20 degrees f. Car
bon bisulphide forms heavy gas 90
| times the weight of air. This peculiar
ity, together with the smothering of in
sect life through the replacing of most
of the air with carbon bisulphide gas,
makes it valuable as stored grain
fumigant. The heavy carbon bisul-
| phide gas settles down through the
grain. destroying all Of the insect life
In it in thirty-six to forty eight hours.
The gas is inflammable; hence fire
Of any kind should not be brought near
the bins during the fumigation period
or for few days just after the fumi
cation is done.
Make your bins as tight as possible.
Paste paper over cracks or openings
out of which the gas might leak.
See that the temperature is around
! 20 degrees Il.
Introduce the carbon bisulphide direct
~ into the grain by means of short
section of pipe with perforated sides
and the end plugged or pour directly
on the surface of the grain. putting not
more than u pint in a place.
Use five to eight pounds of carbon
biSulphide to each 1000 cubic feet of
space. at 20 degrees f.. provided the
bins are tight. If below Go degrees
f. and the bins are not tight approx
mately double these amounts must be
! used.
Keep the bins closed for thirty-six
to forty eight hours. Fumigation fol-
longer periods sometimes Injuries ger
mination, but does not affect edibility
Afterward open the door and win
dows, airing out the granary thorough
~. Shift the grain by putting it IL
other bins. shoveling it over or clean
ing it, as damp, weevily grain some
times heats n few days after being
fumigated, due to the moisture from
the dead weevils, Aerating the grain
prevents it from heating and spelling
Always make the application in day
light. being careful to breathe as little
of the fumes as possible. as the vapol
of carbon bisulphide often gives The
average person Il severe headache II
breathed too much