Middlebury register. (Middlebury, Vt.) 1886-1937, 1896-07-24
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GRANARY INSECTS.
Protecting Stored Grain - Bisulphide of
Carbon VIII Destroy the Pests.


Carbon Will Destroy the Pests.
In bulletin 1872 from the Michigan
State Agricultural college station q. c.
Davis makes these suggestions concern
ing the control of the common granary
insects. The first thing he observes is
"Never put new grain into a granary
on old grain. The second point to re-
member is to "clean the bins and gran
airy thoroughly each year before new
grain is put i'll. If granary insects are
suspected after cleaning, fumigate with
bisulphide of carbon or some such gas
before the new grain is put in. 1t will
cost less and can be better done before
the new grain is put in.
There is only one practical method by
which we can rid the granary of the
most Of its insect pests after they are
once well established in the grain, and
that is by the use of bisulphide of car
bon. This clear liquid is very rapidly
converted into "A gas on being exposed
to the air. Owing to its being heavier
than air it settles rapidly through the
grain and quickly permcates the whole
of it, 1t is highly inflammablc and ex-
plosive when ignited, and care must be
observed in keeping all light and fire
from the gas or near where it is con-
fined Local druggists rarely keep the BIZ
sulphide of carbon in stock as it so read
lily evaporates but probably your drug
gist would order it for you If not, it
can be ordered by yourself from some
wholesale drug house in one of our
larger cities
If insects are present in the grain and
it is desired to treat them with the hi
sulphide of carbon, first consider whether
the granary or the bin is com paratively
tight If it is very loose and open and
cannot be tightly closed, it may be nee
essary to remove the grain to "A tighter
receptacle, as the gas will escape toe
quickly and the insects will merely be
| stupeficd. Wheat bins and bins fOI
| ground feed can easily be made tight
enough. If cover is lacking, wet blan-
kcts thrown over the grain may serve as
covers. When the bins containing the
grains are tight, pound of the bisul
phide is said to be enough for 100 bush
els of grain. For a moderately tight
bin, or > pounds to each ton of grai1
is surer, and there is no danger of injury
to the grain either for food or for seeC
when used at this rate. The liquid may
be poured directly on to the grain by
distributing it well over the surface. L
may also be placed in open dishes or OF
an absorbent such as cotton batting
where it will evapOrate more slowly
and last longer. Where the grain il
more than four or five feet deep III the
bins, portions Of the bisulphide shOulC
be put down near the middle of tn
grain and about every two or three fee
apart. a piece of gas pipe will be suit
able for this purpose. Inside the ga
pipe should Dc cylindrical stick tina
can be drawn ont of the pipe as soon a
it is pushed down into the grain as fla
as desired, and then the bisulphide Cal
be poured down the gas pipe.
After the liquid has been applied
cover the grain as quickly as possibl
and leave it covered for ~ or 3G hours
when it can bc opened up and aired. /
second application may be found neces
saly i'll month or two after the first
made. Tho bisulphide Of carbon vii
kill mice and rats that may be held i
the hin by inhaling the poisonous ga,
and it is also injurious to man when in
halcd in large quantities. There is II
danger in its use if handled with jude
mont