Elmore County Republican. [volume] (Mountain Home, Idaho) 1910-1915, 1914-07-18
GET THE COOLING
MOTH RIGHT NOW
Third Spraying For Codling Moth
Should be Done Now to be
Effective.

T. II. Parks, field entomologlst for
the University OF Idaho agricultural
extension department, after making
the most careful study and ineesti-
cation of the c0dling moth pest and
Of the best way of guarding against
its depredations gives out the fol-
lowing instructions of special value
and interest to the fruitgrowers Of
this community right now:
Fruit growers who expect to
keep their orchards free from wormy
apples should make preparations to
spray for the second generation OF
worms which will soon put In their
| appearance. This year the third
| spray should be applied I'm the Boise,
oayette and lower Snake river val.
eys, beginning July II, and should be
completed preferably by July, 25th.
This represents the time during
which the maximum number OF eggs
Will be laid by the codling moth,
he first OF which are already on the
wing. These eggs hatch In from
o IL days after being deposited and
he poison should be on the foliage
md fruit at the time the worms
latch. The date of applying the third
spray In the higher attitudes should
20 delayed few days longer, owing
o the fact that the eggs are de.
)osited little later.
'"rhe above dates have been set
rom the results of work with field
cages planted In different orchards
ind into which the cocooned larvae
)f the codling moth were placed as
soon as they had left the apple and
pun their webs, or cocoons, under
the rough bark Of the tree trunk
and under bands placed on the trunks
If the trees to trap the worms.
.doths have been issuing for several
days In these screen cages, which
lave been kept under observation of
the department of horticultural IN
'pection; and these moth will soon
De deposlting eggs for another gener-
alton. This Is the only accurate
method by which the time for ap-
plying the third spray can be galag
ed, and is one which 1T would pay
every fruitgrower to put into prac-
tice.
Every grower can put on the first
spray at the right time, which is just
after the petals fall. Likewise the
second spray, usually made three
weeks later, Is applied at the right
time, although many fruitgrowers In
the Boise valley applied this spray
too late this year. The third spray
s. often applied too soon or too late
because of no accurate guide, and is
sometimes delayed on account of a
rush of other work on the farm.
This Is the spray that has so often
been applied at the wrong time and
which means much to the grower, as
it prevents injury to the apples in
August and September, thereby pre-
venting serious loss to fruit crop
just when the orchardist thinks
mis- apples are coming through in first
class condition.
I'm many sections last year large
numbers of apples were thrown out
at packing time because of the pres
ence of side worms or blsm' sizes
which showed up late In the season.
The question of how 10 overcome
this loss was one frequently brought
up In the farmers movable schools
and institutes held last winter by the
the University of Idaho. This plain
ly indicates that there has been too
many mistakes made ir the time and
thoroughness of applying the third
spray, which will soon lie r.ate.
"The summer geng4at,cn af worms
is the one that Is capable of doing
the most damage to the fruit, and
the third spray shonid never be neg
lected where there s any Indication
of the presence of wormy fruit dur
ing June and early July. This not
only protects the neary mature fruit
from attack, but makes control OF the
pest easier the following season.
Spraying should be commnced about
July II and the fruit and foliage
thoroughly covering with a mist, US
ing two and one-half pounds OF ar
senate of lead to each so gallons OF
water.-- Statesman.