The Hood River glacier. (Hood River, Or.) 1889-1933, 1913-12-25
FOSTER GIVES
SPRAY TALK
LARGE NUMBER OF GROWERS COME
Many Facts Brought Out Which Will Be
Of Material Aid in Control Of Insect
Pests and Fungus Diseases

5. w. Foster, entomologist and man.
ageT of the insecticide department of
the General Chemical Company of Cal
ifornia, at San Francisco, gave a talk
to fruit growers OF Hood River valley
last Saturday on the control of insect
pests aad fungus troubles on fruit
trees.
MIR. Foster was for several wears a
field entomologst for the u. s. De-
partment of Agriculture and tie direc-
tions given were based on results
obtained by him during his expert
mental work in the west and for obser-
vations on the work of athers engaged
along similar lines.
Some comparatively new spray
materials were disc0sed which have
given very satisfactory results in the
arid and semi-erid regions of the west.
Among those mentioned pere Atomic
sulphur. non-caustic fungicide for
use during the growing season for the
control of such as mil6ew on fruit
trees and ornamental plants. the fun.
gus scab on apples and pears and for
the so-called red spider mite which
attacks the foliage in lateospring and
summer. All experiments so far con-
Quoted both in the east, where il has
been used for four years, and in the
west show that atomic sulphur is a
a good fun9jcide for the control of
such diseases as fungus scab and mill
dew and much less likely to produce
injury to fruit or foliage during grow
ing period.
Oil sprays were discussed to some
length; both the crude oil emulsion for
dormant spraying and the distillate oil
emulsion to be used during the spong
months. For bad infestations of San
Jose scale. when the trees are covered
with moss and lichens, or rough shaly
bark. or vhen oyster ehell scale, 9
scruffy scale, or woolly aphis are pres
ent crude oil emulsion is preferable to
lime-sulpur ISOLATION as dormant
treatment. The spraying should be
done in the late winter or early spring
before the fruit buds open at the tip.
Distillate oil emulsion is for use
against sucking insects which must be
killed when thee buds are opening or
Sust after blooming. Among these are
the brown or purple aphis and green
aphis that have not been killed by the
dormant spraying.
Those who have been working with
oil preparations have found that we'll
made oil emulsions made from oils
lhaving an asphalt base are safer to use
than emulsions made from oils having
a parafline base. Among the recon-
mendations given Mr.. Foster advised
growers to sEoay for anthracnose with
/ bordeaux In the eaaly fall, before win
ter rains set in--the earlier the better.
After long rains tho fungus enters the
bark in winter condition and bordeaux
should be applied before this growth
starts.
In late winter or early spring spray
with either lime sulphur solution be-
fore the buds open at tip. THIS spray
ing should kill eggs of green aphis as
we'll as all scale inserts and will lessen
the infestation of brown or purple
aphis. If this aphis is not killed by
dormant treatment, spray trees as soon
as buds begin opening with distillate
oil emulsion, three per cent concentra-
tion in water, adding black leaf 40"
at rate of one to 1900.
When fungus scab is present spray
with either atomic sulphuf bordeaux
mixture or lime-sulphur mixture when
first buds show pink. If atomic sui
phur Is used il will olso eifectually
control mildew.
The next spraying should be applied
just as petals are falling. Use apse-
nate of lead paste for codlihg moth
and atomic sulphur for fungus scab
and mildew, atomic sulphur being a
more effective control of mildew than
| - ka ZaHatt3nrv ahnnId
be applied just before first brood of
q codling moth 0worms hatch, using arse
nate of lead for the worms. and atomic
sulphur as last treatment for scab and
mildew. Atomic sulphur at this time
will also be effective in controlling red
spider or mites when Such are present,
and win kill many of the young or i'm
mature forms of leaf boppers. How
ever, when these insects are present in
fgreat numbers nicotine should be added
to atomic sulphur and arsenate of lend
to aid in killing the larger nympths
and adults. When the infestation is
: bad it voll be necessary to make two
.. sprayings from two to three weeks
apart.
The lats spraying fer codling moth
: should be applied just before the first
larvae of the second brood worms
. hatch.
When necessary, for the early spray
: ings, arsenate of lead, atomic sulphur,
dstiIlate oil emulsion. and nicotine
, may be used in tank at same time, OF
any two of each without decomposition
or danger of injury where either ma
terial could be used alone with safety.
! However, neither bordeaux mixture OF
lime sulphur can be combined with oil
emulsion and nicotine preparations
must not be combined with bordeaux
mixture.
, In the discussion brought out by
! questions asked MIR. Foster said they
would be glad to furnish copies of their
literature to any one desiring same, OF
! to give any information possible re.
: garding the control of specific insects
or diseases. Any inquiries addressed
] to General Chemical Go. of California,
) San FranciscoS Calf, will receive
) prompt answer Describe troubles
3 fully.
Bowling Alley Becomes Popular