The Hood River glacier. (Hood River, Or.) 1889-1933, 1906-05-03
COOLING MOTH
And TREATMENT
TIMELY ARTICLE BY MELANGER
Taken From a Bulletin on Orchard
Practice, Complied by
F.A. HuntIey.

The Cooling Moth is brownish
miller about one-half inch in length,
which lays eggs on OF near apples. In
little over a week the eggs hatch in.
to Codling Worms. In nearly all To-
calities two distinct hroods of worms
occur each year, After feeding with
In the apple for several weeks the
worms leave the fruit to cocoon. Most
worms make their oocoons in the
ground, many can be found beneath
rough bark. The cocoon stage Is COM
pleted In from two weeks to month
during the summer. Worms leaving
apples late In the summer remain in
the cocoons over winter. When the
cocoon stage is completed the codling
worm has changed to the codling
moth, and is ready to lay its eggs.
How to Combat the COdllng Moth.
The only lemedy for the colding
moth iss Spraying. Other measures
are useful but cannot be depended on
alone. Clean culture, especially stir
ring up the ground beneath the trees,
is OF great Importance as it destroys
the worms in their cocoons. Banding
trees with burlap will trap 40 per cent
of the worms. Apples should be
thinned so that no two touch. Trees
should be pruned so that they can be
easily sprayed and cultivated. A new
orchard should be set with trees thirty
feet apart to allow for passage for the
spraying outfit in the future.
Spraying.
After the codling moth has entered
the apple spraying does no good. The
object of spraying is to provide a
coating of poison through which the
worm will have to eat its way. Many
worms enter where apples touch. Ii
the fruit is thinned so that no two
apples touch the worm is more likely
to get poisoned. Most of the early
worms enter apples at the blossom
end. In order to place poison in the
blossom end spraying must be given
just alter the petals fall and before the
calyx cup closes. This will be several
weeks before the first worms are
Matching but must be given. 1t is the
most important spraying of all. The
other spraying should be given just
as the first worms of each brood are
Matching.
How to Time the Spray Jings.
The time for The first spraying is
definitely fixed. But there is more
doubt as to when the other spray ings
should be given. The best time for
spaying can easilyb ascertained by the
following simple method. In a quart
glass jar place number of cocoons
obtained from the trunk of an infested
tree. This jar should have cloth
cover and should be placed in the
shade in the orchard. Add ten days
to the date when the moths first ap
peared ia the jar to allow for the
Matching of the egg and the date for
the second spraying Is obtained. OBJ
tain some new coCoons month or so
later and rear the moths Of the second
brood In the same way. The date for
the third spraying is thus found. A
fourth spraying should be given one
month after the third in the warmer
localities.
What to Spray with.
Lead arsenate is giving better salts
faction than any other substance.
Lead arsenate can be obtained on the
market most economically as Swift {
Arsenate of Lead or as Disparene.
Mix two pounds of lead arsenate paste
with fifty gallons Of water Give
three or four sprayings which are ne.
cessary. One spraying alone will dc
no good.
Lead arsenate sticks we'll and shows
up well on the apple. An ordinary
rain will not wash it off. 1t can not
scorch. 1t has given such good re-
suits that it is the cheapest insecti'
eide in the long run.
Ii lead arsenate can not be obtained
use one pound OF Paris green to TX
gallons of water. Add the Paris greer
to two pounds (no more) of freshly
slak,d lime in mixing. Keep thil
mixture constantly agitated while
spraying.
How to Spray.
Be thorough. One spraying proper
Iy done is better than dozen incOm
pIete sprayings. Every side Of ever!
apple must be sprayed. If an appl
is only partly covered it will probabl.
become wormy. Use as much fore
as possible the mixture will penetrat
better, spread better, and stick better
The one object of the first spraying
is to get poison into the calyx cup
To do this 1t is necessary to force tn
spray through the crown of stamens
Spray downwards into the flowers wit
all the force possible until the flower
are dripping. An angle at the end O
the extension rod is convenience
The other sprayings must be mad
crosswise and upwards, as the aim
to coat the fruit with poison. Us
whatever nozzle will break up th
spray into a mist with the pressur
available, -Vermorel for hand pump
and the Bordeaux type for power
The best results have been obtaine
by using the power pump and throw
ing plenty Of rather coarse penetral
Ing spray. By this means from 80 pc
cent to almost the entire crop shoul
be saved. But above everything else
be thorough.
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