The farmer and mechanic. [volume] (Raleigh, N.C.) 18??-19??, 1912-06-18
THE WOOLLY APHIS OF THE
APPLE.

fRv F. II. HILLNAN.)

SeCtS closely alfleu 10 lle pAdht ~
SO m to all plants. Their
mouth-parts are SO constructed as %
form a sharp pointed sucking beak.
This is thrust through h ~tenderest
bark and the trees sap thus with
drawn. The very fraglllty or THIS
sucking organ leads to the greatest
damage to the infested tree, because
it can be inserted only into or posi-
bly, partially through the outer bark;
thus the nouriShment is Withdrawn
from the forming cambium layer or
that OF the stem Immediately beneath
the true bark, whose office is to furn-
iSh new wood on the one side n
new bark on the other. This drain
pom the trees food supply and the
consequent impoveFishment Of the
growing tissue at the point Of attack
tends to interfere seriously with the
proper development Of the stem at
tackled. Especially is this true in a
year when these pests are apt to APP
pear in countless numbers. h
withdrawal OF nourishment, aided by
the mechanical injury to the bark, is
very apt to cause cracks to appear
in the latter, which, by exposing the
wood beneath, produce a wound
which will greatly retard, il it does
not destroy the growth Of the. stem
bearing it. Nc part of a tree is nor
liable to an attack, followed by a re-
suit OF this nature, than young CRAFTS.
The damage to such is at once APP
parent.
The parts Of a tree most liable to
an attack by the Woolly Aphis are
those where the bark is youngest and
tenderest and hence receiving the
greatest amount of nourishing sap.
The insects seek the sap and their
Trail beaks must needs nave the tend
crest bark to pierce that the desired
nourlshment may be reached. The
required conditions are presented, as
we may readily see, in recent in
Jurles to the bark where new bark
is forming, as for instance scar
where limbs have been removed, OF
cracks in the bark at any part Of the
tree; h young sprouts that sc
commonly spring from the trunk and
older limbs Of the tree; about the
bases OF the younger twigs, sometimes
about the body Of such twigs; and
lastly, at the junction Of the Leaf
stems with the twigs bearing them
Indeed, a tree which is badly affected
will present examples Of each Of these
cases.
A colony of these insects may be
located by the mass Of woolly mate.
rial which usually surrounds and fire..
Quent1y covers them. This matter I,
secreted by glands in the BODY skin
and IN developing becomes more o,
less fbrous. Finally 1t is blown ava,
by the wind in masses Of tangled
fibres.
Nature makes provision for the de
structlon Of great numbers of thes,
Aphldes by providing in them a sourcs
OF 1000 supply for several differen
insects which thus become on,
TRENDS These natural agencie
greatly reduce the number of thes
pests but in dry seasons nature mus
pc assisted it these insects are to b
kept reduced to nondestructive mum
bers.
kerosene emulsfOn-formed b
addlng TO n part Of a boiled mix
ture Of one-half pound of commo1
soap and a gallon Of water, two part
OF Kerosene, thoroughly mixing, an
diluted with cold water TO form ff
teen TO twenty parts-is an effcien
remedy.
A double handful Of refuse tobacco
boiled in a gallon OF water to forr
a strong tea. and diluted to form 81
or eight gallons is a valuable an
easily prepared remedy. Carboli
soap, such as sold in the shops 70
dfsinfecting pos dissolved an
SO diluted that a decided odor O
carbolic acid still remains, is anothe
effective remedy.
FAD CDDYNC I'M HE"