The Hood River glacier. (Hood River, Or.) 1889-1933, 1916-03-30
SCAB CONTROL CAM
PAIGN Is NOW DUE
(By Leroy Childsl

The time for beginning our scab con-
troll work for the season is almost here.
In case of the earlier varieties of ap-
pies growers should be prepared to be-
gin spraying within a week or 10 days,
depending upon the foliage develop
ment.
The past week of rain has caused the
discharge of many spores. and with the
right sort of weather conditions this
discharge will continue for a month or
more. This means that it is absolutely
necessary to protect and keep protected
with spray materials, all foliage and
fruit during this critical period if scab
10 to be reduced to minimum.
The flrst scab spray, the so called
semi. dormant, should be applied about
the time the first leaves have separated
from the breaking buds, being about a
half inch in length. Lime sulphur is
the spray recommended for this pur-
pose and should be used at dilution of
lis. In many places this should be
applied about the 5th of April. Call up
the experiment station if you think we
can help you.
Too much emphasis cannot be placed
upon the necessity of making these
early applications. To obtain clean
fruit spraying must be done regardless
of weather conditions. the purpose of
which is to protect the foliage and de-
veloping fruit from the primary infec-
tion resulting from the oVerwintering
scab spores, which are now being dis
charged. Prevention of this primary
infection will be of much assistance in
keeping the growth of the fungus
checked later in the season and it can
only be accomplished by following a
thorough. we'll timed spraying sched-
ule.
A Few DOn'tS
Don't stop spraying because it looks
as IL it might rain. Don't let the wind
deter the welding of the rod-waste a
little spray and get clean fruit. Don't
forget that fungus can grow on both
the upper and under surfaces of the
foliage as we'll as on the fruit and that
1t is necessary to spray up as well as
down to cover these parts. Don't for
get to examine and analyze your
sprayed trees from time to time. You
will find out lot by doing so. In other
words, don't take chance on omitting
anything in your scab control work.
With all of the overwinterng scat
spores present the chances are 100 to ]
that the chance taker will lose.
AphiS Control
For the control of aphis, especially
the brown aphis which causes the dwarf
apples, tobacco should be applied with
the emi.dormant application of lime.
sulphur. The diluton of the tobacco
should be about l.1000 of water. Use
no soap when combining with lime-sul'
phur.
Owing to the fact that the brown
aphis curls the leaves soon after they
appear early applications of the to-
bacco are very important. After the
leaves are once curled the insects are
so protected that they cannot be reach
ed with spray that will kill them.
Miscible Oil Users, Attention
The long rainy spell of the past week
has greatly handicapped growers who
contemplate the use of oil this spring.
Growers are warned not to spray with
oil after the foliage is started or con
siderable injury is liable to result. We
have sprayed with oil at the rate of
gallons to 100 of water after the first
leaves we're cut and the material useC
caused no appreciable injury to fruit
buds, although many of the first leaves
were burned off. In view of this fact
we do not feel safe in recommending
the late application of this materit
even though it would occasion no rea
ininrY