Evening bulletin. [volume] (Honolulu [Oahu, Hawaii]) 1895-1912, 1903-11-05

Of dense growth, unpruncd, are almost
certain to have their Centcrs. at least,
scaly. A well.pruned tree in which free
access is given to light and air, is much
less apt TO be badly attacked that a
! thick.hcaded tree. the interior Of which
is entirely shaded. thus furnishing the
conditions most favorable for the we'll
being OF scale insects
II the soil Is deficient in the proper
plant food, fertilizer must be added
to stimulate growth.
Carclessness in bringing infested
trees from one part Of the country to
another or from one country to anoth.
or, accounts for the worldwide distri.
button of this class of pests. The album
dance and general distribution of the
sCaleinscCts. mealy bugs and related
species in this Territory, has been the
result largely OF a disregard OF all in
spection measures and the lack of act.
i've measures of control. Trees sent
from one place to another, or, trees Sc
leCted for home planting, should be
carefully examined and If found to be
infested, either well cleaned or de.
strOycd. Even an expert, in the eN.
animation OF any great number OF trees
or plants, cannot always detect the
presence of a pest in all its different
forms but to say the least, the danger
llom this source can be greatly lessen.
ed.
Natural Enemies: A small beetle
OCryptolaemus mOntrouzierD belong
ing to group known popularity as
lady. birds" feeds extensively on the
"pear.blight" or mealy bug. This pre-
daceous enemy should be fostercd
wherever possible and its develop
ment encouraged. Observations indi
cate, however, that this natural enemy
cannot be relied upon to keep the pear
blight" below the danger line. The use
of sprays and washes has given way to
natural enemies as remedy in but
one instance. The Division of Ento
mology of the U. S. Department of Ag.
riCulture, in 1889 imported through its
agent, Mr., Albert Koebele lady.bird
beetle INoyius cardinalis) from Aus,
.tralia which entirely cleared the orch
ards Of California of the dreaded fluted
scale. (lcerya purchasD. This was a
quarter OF century ago. Since that
time there have been many other sue
cessful attempts.
Although vast number of the pre-,
daCeOus and parasitic foes Of the in
furious insects OF the United States
have been introduced, entire success
OF such measures as remedy has been
gained in only the one instance stated
Further work and investigation will
no doubt give us other efficient enc
mics, but until that good time comes
dependence must be placed on active
measures.
Active measures: The standard rem
edy Tor mealy bugs Is kerosene emul
sion. This Is best known and the uni
versal inseCtiCide for sucking insects
, The question of insecticides for biting
and sucking insects is discussed in Bull
letin No. 3 of this Station.)
Kerosene Emulsion.
Whale.oil soap Tor any hard soaT
e shaved fine). one.half pound; water
, one gallon; kerosene (coal.oiD, two
gallons.
Dissolve the soap in the water Will,
1t is boiling over a fire. When the soaI
o Is thoroughly dissolved, remove the so
. luton safe distance from the fire ant
. add the COal.Oil. Thoroughly churI
, the mixture for a few moments unit
r II has creamy consistency. II thu
; mixture is well made, the oil will no
rise TO the surface on standing. Should
) any do so, 1t should be skinned of
before using. The Churning is usual,
o done with a force.pump by pumping
, the mixture back into ITSELF using 1
nozzle throwing a direct stream Thii
is the stock solution and will keep sew
eral weeks. When wanted for use di
: lutte. for the pear blight, one part o
the stock mixture with fifteen parts o
water and apply to the infested tire,
: with a spray pump. This mixture cal
be made IN an empty oil tin from which
the top has been removed,
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