Lewiston evening teller. [volume] (Lewiston, Idaho) 1903-1911, 1908-05-02
THE COOLING MOTH.
From the Experiences of Those Who
Are Successfully Keeping It
In Check.

All experiments carried on in the
arid sections of Utah, Washington,
Idaho and Oregon indicate that It
Is very important that the first
sprayings for the codling moth be
very thoroughly done at the time
blossoms are falling and second
oray made within ten days from
IT, first. Some have applied third
spray within 10 days after the Sec
ond to get the poison we'll into the
calyx cups, insuring that none have
been omitted. Fruit growers will
bear in mind that the emphasis on
the importance of the first spray
apl'es to sections under arid or
semi-arid conditions. In humid Sec
tions, where nights are cool and
there is considerable moisture at
dawn. the spray at poisoning time
has been of less Importance. In the
Oregon, the first brood of the moths
began Matching May % ana contin-
ued until June 81. Here the aver
age length of life of each moth is
from SIX to seven days. Professor
Cordeley found in his experiments
that time REQUIRED for the eggs to
hatch after they are laid varies
with the temperature. He divided
lot of eggs laid at one time into
two sets. One set of eggs was plac-
81 iv, To ha IN,
warm air, and the eggs Matched in
four days. The other set was placed
outside under natural conditions,
and the eggs Matched in two weeks.
The eggs Of the first brood. Of
which the moth may Law about SO,
are generally conceded by the best
authorities to be laid upon the
leaves. while most of the eggs of the
second brood are laid on the apples.
The egg is nearly white, about the
size of pinhead.
The worm or larvae Is about one
sixteenth to one-twentieth OF an
inch long when Matched. The worm
feeds on the app'e about 20 days,
and when he energies. usually from
the side, he seeks place to spin a
cocoon, frequently the bark of the
tree or some dark place. The larvae
or worms change into pupae In
about six days. and in about 20
days emerge again as moths to lay
eggs for the second brood.
Formula for SO Per Cent Apples
Immune from Worms.
Giving fruit growers the benefit
of the experiments carried out by
| A. l.. Melander, the bug man" Of
the experiment station, Washington
State College, Pullman, in orchards
at Wenatchee and at Walla Walla.
where over 80 per cent of the APP
pc crops were kept free from the
worms, he emphasizes these points
which are based on conditions
which gave such phenomenal sue
cess.
Spray your trees with arsenate of
lead, using one pound to SO gallons
of water. Begin to spray when
about 80 per cent of the blossoms
have fallen, and have enough out
fits on hand to be through in eight
! days. Use Bordeaux nozzles, be-
cause they throw a coarse, penetrat-
ing spray, and do not use more noz-
zels than the capacity OF your pump
will supply and still keep the pres
sure up. Set the MOBILES at an an
gle of about As degrees. either by
bending the ends of the rod or by
means of an elbow coupling. Throw
the spray directly into the throat OF
every flower. To do this the MOBILES
will have to be held above the
branches most of the time, and the
spray rained down. A mist spray
or simply throwing the spray into
the trees will not fill the lower
calyx cup, and that Is the only part
of the tree that needs the spray
II your trees are taller than yor
can reach with the rod build tow
ed platform from which to spray
Get above the branches and spray
down.
To reach the bottom of the caly,
cup much pressure is absolutel!
necessary Do not spray at les
than 80 pounds and IL possible us'
$50 to 200 pounds. Stay with
tree until the bottom of every bios
som is filled, even though 1t ma!
seem a great waste of time and ma
terial.
Select blossom here and there
and cut 1t in two to see IL YOU
spraying has filled the the cup be
meath the stamens. If it has mo-
your spraying Is not thorough. ant
you should spray again at immedi
ately Watch that You don't miss
the ends of the~branches.
Most early worms enter the apple
through the bottom of the caly1
cup When this is poisoned there
can then be no late worms, for the