The citizen. [volume] (Berea, Ky.) 1899-1958, 1914-06-25

Since the aphis appears In success
siye broods. growers must be on the
watch for them and apply some rem
edy for their control Immediately
/ upon their appearance. Special effort
| should be made to check the first
broods so as to lessen the danger of
attacks later on.
Aphids belong to class OF In
sects known as sucking insects. hence
| the methods OF control must neces-
sarily be some form of contact insec-
ticide. Thorough spraying with strong
lime-sufur In the spring just before
the buds start to swell Is beneficial In
that the coating OF lime sulfur VIII
cause the death Of some Of the eggs.
This application luckily comedies with
the application for San Jose scale and
Il is another argument IN favor of the
dormant spray.
However. this application does not
get all OF the eggs and In many cases
the trees become affected before the
grower Is aware that anything IN
wrong. A condition of this kind calls
for prompt attention since an appli-
cation Of spray material will not be as
effective after the leaves have once
Curled. Strong lime sulfur can not be
used at this time In combating aphis
because of the danger of running tho
foliage. The common practice Is to
use Kerosene emulsion or some form
~ tobacco extract.
Kerosene emulsion consists of oil
emulsifed with soap and may be pre-
pared as follows. Hard soap half
pound, water one gallon and kerosene
two gallons The soap should FIRST bs
thoroughly dissolved in boiling water
and then the kerosene added. The
mixture should then be thoroughly
agitated until It Is creamy white In
color. II may then be diluted at tho
rate OF one part OF emulsion TO ten
or twelve parts OF water and applied.
The tobacco sprays are more com
monty used than any other and are
generally more effective. They may
be safely used against all Hinds OF
aphis and on ali plants. Tobacco
sprays may be purchased already pre-
pared or they may be made at homo.
For all ordinary purposes the CONNER
clal product is TO be preferred because
Il saves the time and labor OF prepar-
alton and because IL is usually more
uniform. The most widely used com
mercial form is known as Black
LoafiO.' The tobacco spraying may
be used alone or II may be combined
with the arscnatc OF lead lines lfur
application that should be given for
scab. oodling moth and curcullo about
this time. When It is desirable TO
use the Black Leaf<0" without lime
sulfur. the addition OF soap will great.
ly aid the spray IN spreading over tho
leaves II combined with lime.sulfur.
first dilute the limesulfur to the re-
quired strength and then add the
Black Leaf-iO" at the rate Of one
par, TO 500 or 900 parts OF the diluted
solution.
The aphis takes advantage OF the
curled leaves. thereby protecting itself
from any OF It's natural enemies. Its
OF little use to spray after the leaves
are badly curled because Il is almost
impossible 10 reach the aphis In It's
leafy folds II the leaves are Just
starting to curl, a spray applied with
great force into the folds where the
plant lice are working will DO effect
i've. For best results an angle nozzle
is TO be preferred TO the ordinary
straight nozzle because II will be cas-
Ter 10 reach the under side OF the
leaves where the plant lice are ut
work.. H. Carmody. Department OF
Ky. Expt. Station.