The islander. [volume] (Friday Harbor, Wash.) 1891-1899, 1898-02-03
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-
Fos sale by ,,,
w. E. Sutherland, Orcas, Wash.
co~rRor1rNc THE GOBLIN MOTH.
fcont;nued from last week.

Continued from last week.
The object OF the spraying Is to Keep
the ample covered from the first with
thin LAYER of poison, so that the moment
the larva matches from the egg laid on the
young apple and begins to burrow there
in it will be poisoned. 1t is therefore evil
dent that if the apples could be kept
sprayed the whole season that crop 1ree
from worms could be raised. To do TINS,
however, would require sprayings every
ten to twelve day throughout the season,
entai.ing an expense that is excessive.
Each spraying costs from to 10 cents per
tree according to the size, and the practl-
cal experience of most growers is that
two sprayings yields the best profit. Sub
sequent sprayings do not save enough
more apples to pay the additional cost.
The first spraying should be made within
a week after the blossoms fall; the second
ten days LATER This should be sufficient
if the weather remains clear. Should rain
occur during this period additional spray
ings become necessary. Only in cases
where the young apples are kept well
sprayed curing VIC nISC wv "OGnS -
their growth can satisfactory results be
obtained. =,
The second method of combating the
Goblin Moth takes advantage Of the habit
Of the larvae Of pupating in sheltered
crevices, etc, on the trunk Of the tree, by
preparing suitable places to which they
are attracted to pupate and in which they
may easily be destroyed.
The simplest method is the so-called
ssband SYSTEM This consists simply in
fastening strip of burlap around the
trunk foot or so above the ground. 1t
is better that the burlap should reach
twice around the trunk, and it may be
fastened by string or nail. 1t the trunk
of the tree is kept free from loose bark
and moss, practically all the larvae which
escape being poisoned by the spray. will
pupate beneath the burlep band and are
there easily destroyed. The bands should
be examined every two weeks During the
summer. If a longer time elapseS some
of the moths will emerge from the pupae
and escape Especial care should be taken
to examine the bands after the leaves fall
in autumn and before the buds open in
the spring, so that all alternating. indi-
viduals may be destroyed. The danger
from the first brood in spring is thus very
greatly lessened. During the months of
June and July careful attention to the
bands will we'll repay the work, as by
this means large proportion OF the Sec
Ond brood is destroyed.
The use Of the two systems together
furnishes the best means of fighting the
Goblin Moth, and there seems little hope
of improving much on them. The insect
is so well protected in the apple. and
hides itself so carefully when pupating,
that few are destroyed by other insects or
birds. It is true that two different para
site insects are known to destroy the
Goblin Moth, but even where these para
sites are abundant, only a very small per-
cent of the Goblin Moth larvae are de-
stroyed by them, so that nothing much
can be expected in this direction.
It would appear then that orchardists
will have to depend principally on thor
ough spraying if they would raise apples
free from worms.