Virginia gazette. [volume] (Williamsburg, Va.) 1893-192?, 1904-08-06

cially those that suck the sap from the
plants or blood from animals which
they attack. and which. therefore. can
not be combated by the use OF stOm-
ach poi.ons like Paris green. On the
other hand. different plants vary in
their ability to withstand the oil. SO
that care must be used TO make the
emulsion strong enough To be fatal 10
the insects without hurting the plants.
The chief insect pests for which Il is
used are the various species OF plant /
lice or aphids and the scale insects. l
While the san Jose scale can be very /
successfully combated 10y spraying I'm \
the winter with the lime sulphur salt /
wash. yet this material can only be /
used when the trees are dormant and /
kerosene emulsion must stiu be de- |
pended upon for summer treatment.
To be applied 10 best advantage the
emulsion must be applied with a spray
pump. for il put ON with a sprinkler
it wastes the material and endangers
the plant. and the application is also
not as thorough as when a regular
sprayer is used. Spray pumps throw
the emulsion IN such fine. foggy mist
that it penetrates into hooks. corners
and crcviCes which would not he
reached with q sprinkler. The appu-
cation must also be SO thorough as TO
reach the individual insects. for they
are only killed when it comes into ac-
/ tual contact with their bodies
The directions Tor preparing the
emulsion are as follows:
shave one-half pound or laundry
soap into thin pieces I'm one gallon OF
water and bring TO boiling heat on
stove TO dissolve the soap Then re-
/ move the soap water from the FIRE and
pour in two gallons of Kerosene and
| churn the whole together violently uu-
/ til thoroughly mixed. This is best
done 10y pumping IL through the pump
and back into itself again. This gives
three gallons of emulsion. which is six
ty-six per cent. oil. but as this is too
strong for most uses. IL may be diluted
by this table.
To get ten per cent. oil add seven
teen gallons water.
To get fifteen per cent oil add ten
and a half gallons water.
To get twenty per cent. oil add seven
gallons water.
To get twenty-five per cent oil add
FIVE gallons water.
To get thirty per cent. oil add -four
gallons water
To get forty per cent. oil add two gal
Ions water.
To get fifty per cent oil add one sal
Ion water.
The emulsion is not poison and does
not Kill the insects 10y being eaten. like
Paris green. IL is only fatal 20 those
insects that are wetted 10y the appli
cation. So that great thoroughness is
needed i'm making the application. s,
that every individual viii be touched
ON the other hand. only enough mus
be applied To thoroughly wet the in
sects. and the emulsion must not ruI
down the plant ana i'm ut the roots
That is why "a regular spray pump ID
SO necessary. in order TO make the APP
plication 50 thoroughly as 10 reach al
the insects without an excess, which
would hurt the plants.
Some OF the more common trouble
some insects for which the kerosen
emulsion may be used are:
Cotton Iouse-Spray with fifteen pc
H.. cent emulsion as soon as they appea
. and before they get scattered through
out the field.
Rose Louise Spray with fifteen pc
= cent. emulsion when they appear.
Z Cabbage Louse.-Same, before leave
Z get curled.
: Green Apple Louse-Same as cal
bage louise.
o Woody Aphis of Apple-Use fftee
= per cent. or twenty-five per cent +
u winter.
Black Aphis of Peach and Plum
: Spray with fifteen per cent befor
u leaves get cUrled
Pea Louise or Aphis-Use emuls.o
a at ten or fifteen per cent. or tobacco
i dust. We have not yet fully settle
II this question.
l. san Jose Scale-SpTay with fiftee
per cent emulsion If treatment is
be given while trees are in leaf. IS
II do not treat them in bloom. or unit
49, after the fruit is well set after blOOr
= | ing. The best remedy for this pest
to use lime-sulphur-salt wash in Wi
ter.
Oyster Shell Scale-Spray with tive
D ty per cent. emulsion when the your
d begin to crawl about May 1. in mo
years..
'. Security Scale-Same as oyster she
scale.-Franklin Sherman, Jr., Emf
mologist. North Carolina DEPARTING
n of Agriculture, Raleigh.