The Abbeville press and banner. [volume] (Abbeville, S.C.) 1869-1924, 1910-11-02
Clemson Extension Kofk-AFticIs
XIV.
wEEv1Ls IN CORN.

The weevils lay their eggs In seed where
full grown they change to the dormant err
pupal stage, from which the full, grown
weeviI energies and works its way out to
pay the eggs for another, generation. The
entire time, from egg laying to the de-
EelOpment OF the full grown weevtl, re-
quires about six weeks.
The first stop in controlling corn weeytls
Is to select the seed corn In the fields, pay
ing special attention to the ears that are
well covered by the shuck and II possible
that hang with the pointed end downward.
This Is an important precaution, although
not sufficient to fully protect the corn IN
the cribs. :
TREATMENT OF CORN CRIBS.
Carbon bisulphide is a colorless liquid
q strong disagreeable oder. 1t yapOrlzes
ly infiamable and when ignited Is explosive
1t Is, therefore, important to Keep Away
Fire or Any Kind, Whether Flame, Stove,
Lantern, Embers, Lighted Pipe Or Cigar.
The chemical Is very widely used at pre-
sent, and when the above precautions are
observered there are no dangers from ac-
cident. It may be purchased ut any drug
store or chemical wholesale house, rang
ing from ten to twenty-five cents per
pOuuU. Luz UrduO luhG udS given lilo
best satisfaction In. our experimentyi work
is named Fuma and costs about ten cents
q pound. The liquid and yapor coming
from it reheivier than air and wilItsink,
therefore the application Is made at the !,
top OF the crib and not from below. .Fnmi-
CATION should be done on warm days as
volatilization Is slower In cold weather
and consequently less effective,
Assuming that the crib Is moderately
tight, 1t Is used at the rate OF 3 Lbs. TO
100 bushels OF grain, o approximately
for An empty crib. It should be repeated
In ten days. IL may be distributed tn.sey-
eral shallow vessles, but the simplest way
Is to sprinkle it over the top like water and
II blankets are available the surface OF
thu corn should be covered. Where the
bin istopen, the best possible thing TO do ID
to make At tight. In case Of log cribs, this
may be accomplished by means OF canvas
tackled over the walls, xs.5-
Where onlya small quantity Of grain 10
to be fumigated, such as seed corn or cory
peas used for seed, 1t may be accomplish
ed by pouring 1t INT coal oil or molasses
barrel. Such q barrel will accommodate
about three bushels. Three to five ounces
OF carbon bisuliphid Is poured over the
surface and the barrel thightly closed for
t~Wenty-four to thfrty-eix hours. The top
Of the barrel may be made perfectly tight
by covering it with several burlap bags
weighted down with boards. a permanent
covering for this purpose may be made
by heavily painted q piece OF canvas OF,
proper size, which is then laid over the
opening and a barrel hoop dropped over
the t6pto be held 1t FIRMLY in position.
Carbon bisulphide Is not poisonous nor
caustic. It drives the air from the space
to which it Is applied and ~suffocation.
When overcome by this gssin q building,
the symptoms consist OF q dry feeling OF
the skin and q streaked headache, accom-
panied by dizziness. This will pass of
Immediately after 8, person reaches the
fresh air. tits not advisable that people
affected with heart trouble handle this gas
to any great extent.
Among other methods for controlling
weevils, lime and salt are some times re-
commended. These materials are not
nearly as effective as fumigation, while the
decreased In the palpatabiIity of the corn
where IimeSis employed, makes use of
this material Objectionable.
The use Of each does not decrease the
~palatability but, In order that 1t may do
any good at all 1t must be used at q heavy
rate. A fair application lwould consist Of
Is to 100 lbs. Of salt to 800 bushels OF corn.
Better permeation Is secured when apply
ing 1t in solution at the rate of 2 lbs. salt
to one gallon of water. 1t must be ap-
piled when the Is put In the crib.
o. Prof. A. f. Conrad
s. G. Experiment Station Entomologis