Pine Bluff daily graphic. (Pine Bluff, Ark.) 1893-1942, 1911-10-22
iHou to Control
Insects Injurious
% Stored Products


many kinds Of stored products, such
g grain, peas, beans, dried fruit, to-
bacco, etc. Most of these insects
have been introduced by commerce
into all partA of the world. They
are far moIss troublesome in the
southern states than anywhere else
II America, These insects include
such notorious ';pests as the Angop-
nois, grain mdth, the Mediterranean
flour moth, the grain meevils and
meal worms. Some species, like the
first named insect and the rice Wee
vii, attack the grain in the field,
whence they are carried into the bins,
but others live only within the barli,
breeding In the stored grain year
after year. Injured grain suffers loss
In weight, its value as food for AM
mails is reduced, it hocemes unfit for
human consumption and it's germi-
mating power is DESTROYED. The an
nual damage to stored products III
the United States has been consefv'
atiyeIy estimated by experts as not
less than S100,000,o0O
Methods of Control.
Troublesome as these insects are, Ii
is possible to largely reduce their
numbers by careful use of preventive
ard remedial measures SO that but
little damage may be suffered. Since
some species, especially those that
bred in corn, first get into it in the
field, grain, should not be. left stand
ing long time before it is taken
into the barns. The smaller cereals
rs wheat, rye, oats, ETC., should BE-
threshed out as soon as they are dry
enough. The practice of leaving corn
in the shocks until late fall is a bad
! one, as it gives plenty of time for
the Angoumois grain moths and other
pests Is breed in the kernels. Corn,
Ike aller grains, should be hars
see 3ast as soon as it is suffi-
cia,sf dry.
Tee new grain should not be stored
in The cribs until they have been
thoroughly cleansed of the insects
that have been breeding in them. The
only possible way to kill all the iii
Eects in the bins or graneries is to
fumigate either with hydrocyani,
acid gas, carbon bisulphide or sulphur
dioxide. The first named gas is such
!. q deadly poison and permeates 50
poorly that it is very commonly not
used. Operators of large mills and
nurserymen are the only people still
required to make use of it, Some
mill men fumigate the whole mill
once year to clean it of pests This
article does not attempt to give Ia
Nformation as to the use of this gas
If anyone wanted such instructions
ne Is advised to write for letter.
from the writer. Mr.. George A. Dear
Of Manhattan, Kan, is perfecting !;
simple method Of heating the mill t
such temperature that all pests
including their eggs, will be killed
without injuring the grain.
According to the experiments c,
Mr.. R |. Smith. entomologist at thu
North Carolina agricultural expert
nent station. this class Of insects cal
= readily killed with sulphur fume
- (ealdhux dioxide). The amount &
u sulphur, necessary to kill the insect
destroys the terminating capacity o
TIA grain. It is wherefore advise
enly to clean empty bins and graz
cries OF the pests. The sulphur
placed in metal dish and is we
With alcohol and lighted with mattel
The fumes produced by burnin
two and a half pounds of sulphur
1890 cubic feet of space for 20 houl
WIN kill all the exposed adults al
the larvae in the grains, according
Mr.. Smith.
Tho only insecticide that can nc
De recommended for fumigating Il
grain IL commercial carbon bis
phide. Hydrocyanic acid gas is Il
penetrating enough and is too de;
b to bother with, II something el
can be used. In all fumigation I
secret Of success depends on usi
the right amount Of the chemic
during the required time in air-ti,
rooms or chambers. The stand,
stregnths given by nearly all writ
for carbon bisulphide fumigation
one pound Of the liquid for 100 GU
feet Of grain in bins. or for 1000
bic feet Of space, if it is desired
n use this gas in fumigatin room, 7
:. q exposure "a hours. II the 81
u not damp and is aired ont a
the fumigation this amount OF
and strength will not injure its
minating powers. II the enclosur
perfectly alright, this amount Of
has been found to kill all the ms
that 1t reaches. If there are CT;
IN the room, several times the amt
must be used. Commercial cal
bisulphide is sold by druggists ;
TO 10 cents pound in l00-po
lrums. The required amount of Ii
a. put In shallow dishes on top of
il your COW has obstructed teat
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