Troy weekly news. (Troy, Idaho) 1897-1933, 1905-12-15

Some of the eggs fail to hatch, being
unfertile.
After about seven days the eggs
hatch into minute worms about six
teenth OF an inch long, with shining
black heads, thoracic and anal shields. |
AS the worm nears maturity, the parts
which are first black turn brown.
The newly hatched caterpillar
wanders about on the surface of the
apple in search OF some irregularity in
the surface where it can get hold with
its minute mandibles, and obtains its
first meal, 1t often works its way be-
tween the calyx lobes which have been
closed before it appeared. Thus the
caterpillar may take its first meal from
any part of the surface Of the apple,
but more often from any part of the calyx
lobes. This fact is Of great importance,
since the presence Of a poison on the
fruit is fatal to large per cent of the
worms. Only few hours are spent
on the surface of the fruit. The worm
soon begins its journey toward the
core, usually starting from between the
calyx lobes. In few days it reaches
the core, where it spreads the remain
der of its caterpillar life, which in all
is 20 to 80 days. A single fruit may
have several worms.
'On coming to maturity, the worm
bores to any part Of the surface and
leaves the fruit. 1t seeks place of
seclusion-a crevice in the bark, among
old rubbish, or, if in a fruit box, often
in a corner-and spins cocoon around
itself, inside of which it transforms to
a pupa. If early in the season, it goes
worm to a moth Immediately and lays
eggs for another brood; but if too late,
it remains as a worm till the following
spring when it completes its transfer
;, nation"
Banding and spraying are the chic
preventive measures. Banding con
sists in folding piece Of thick C otl
from four to six inches wide and fas
, tening tightly about the trunk OF eacl
tree about two feet above the ground
i After the first brood larva begin tt
leave the fruit these bands should b'
examined every six to eight days ant
all insects killed.
Spraying, however, is the chief pre-
/ ventive and should begin as soon a
e the blossoms are fallen about ever
r two weeks. The solution recommends
by the state board Of horticulture is
i Six ounces Paris green diluted with 5
d gallons of water. Place the pciso
Fe with an equal quantity of powdered lin
st il a small vessel with enough water t
Is form thin paste. Let it stand tc
# about ten hours before using. Kee
IT the liquid we'll agitated when spraying
70 in order that it may be evenly distrl
S buted on the tree.
/ In Oregon, at Hood river and
in Medford, the simpler arsenate OF lea
4 spray was used this last summer wit
IT highly satisfactory results. The arse
. nate of lead spray requires a less nun
,e her of applications and is considered
,e triAe cheaper. There being no lime
of this spray, the apples do not have tn
white coating left on fruit sprayed VIII
n Paris green. Well known Oregon trui
n n growers declare after their experiment
to with arsenate of lead they will use I
an other. In many instances where II
an arsenate of lead spray was used le
is than two per cent Of the growers crc
ne was wormy.
er The annual loss due to this insect
sd the state of Illinois alone is placed
dc 40 375. 900. It's claimed that Ne6rasl
navs tribute to the moth to the extel
is- of So. .OOO, 900 annually; New York "
nd 600 900. Idaho suffers loss OF aoo
so per cent Of her apple crop annual
he Wherever the apple is grown to al
ID extent. there too thrives the codlii
of moth It is found to be destructive
M attitudes of 45O0 feet above sea leve
il and in sections of country where Il
~ thermometer falls as low as 3S degre
IL below zero. Early and late frosts al
81 evtreme cold weather in winter m
ID u offsct if and lessen the numbers, b
NJ ~ there are always sufficient saw
- of through the hardest winters to iurni
as an army Of workers. !
eT- ~ Every row and then some enc q
are covers that the very extreme Host'
'i ;s GrseZes have entirely exterminated
roc noddIing moth and the San Jose sea
in in hut so far experience has proved n'
en- nersons to be in error.
de-