The Kennewick courier-reporter. [volume] (Kennewick, Wash.) 1914-1938, 1930-07-03

III 1-SdilOH @OT c-So iioh AosS
should be the commercial and not
medicinal grade for the latter is
more expensive. This solution will
keep for long time in bottles,
well soppered. ...-..-
A water solution without the g!y-
eerine is also effective, but the
glycerine disinfectant remains on
the shears longer without drying
up hence is more effective In the
hands of careless operators. sas
Mercury compounds are very
poisonous. Keep the tablets under
lock and key, for they are very at
tractive to children. In case OF ac-
cidental poisoning the following
is the simplest of the o1flclai
treatments: Administer white OF
eggs and then induce vomiting by
use of mustard water, " to 4
treatments of mustard thoroly
stirred into a cupful of warm wa
teri Send for a physician or rush
patient to the nearest hospital
This disinfectant solution is very
economically and efficiently APP
piled with a paint brush ABOUT
1-2 inches wide. Swabs waste too
mnch material. r.z--, ~, 49,.
If cuts are not disinfected, ants,
and other insects may re-lnfect
them Immediately, especially In a
damp weather in the spring and
early summer. If there are many
twigs to cut, piece of cheap
sponge bound tightly to the wood
en- part of the shear handles and
saturated with the disinfectant
makes a very quick method of APP
plying the disinfectant' to the cut
ends. Breaking off diseased twigs
and branches instead of cutting is
not advisable because the broken
ends are not easily disinfected and
so insects may Immediately infect
the wounds with blight becteria.
Do not use zinc chloride for dis
injecting cuts for it is too pene-
trating and besides if used too
freely in the tops of trees it is
apt to be spattered onto the fruit.
Blight During the Harvest Season
Do not stop the blight work dur
ing the harvest work season. Keep
a competent man inspecting the
trunks and main branches, because
at this time the most serious in
fections are apt to be overlooked.
In some seasons, however, the sum-
mer and fall infections occur most
frequently in the new sprouts and
off-season blossoms which appear
Immediately after the crop is off
(of the Bartlett Variety. At this
time of year the most serious
losses of trees often occur on ac-
count of trunk and root-grown in
fections which do not ooze out gum
freely in the fall.
Fall Operations
If many cases of blight are dis
covered in trunks and root-crowns
at any time during the summer or
fall all the trees should be inspect
ed Immediately by gouging. Fail
ure to do this might cause very
serious losses. Each inspection
cut as well as the tools must be
disinfected. The U-gouge is one of
the best gouges for this purpose.
An attempt should be made to
find all cankers of blight before
late fall and winter because it is
much more difficult to cure active
cankers during this season than it
is during the spring, summer, and
early fall months.
Disposal of Blight Cuttings
During hot weather the infected
twigs on the ground dry rapidly
!. and probably are not a serious
source of infection. During the
spring and early summer it is
well, as precautionary measure,
ito gather and burn all twigs and
branches which are removed on ac-
count of blight. These cuttings
should never be thrown in a large
pile and left unburned, because
they will not dry out sufficiently
to kill the bacteria for long time.
Especially before an irrigation
the fresh clippings should be gath
cred because it is probably poss-
lble to infect the root-crown and
suckers by bacteria in the irriga-
ton water.
The California station has done
considerable work in study of
chemicals which would control the
blight especially in the bark cam
ker stage, zinc chloride has been
found a practical remedy.
Formulas for making. the solu-
ton are given below. The solution
is usually carried in a fruit jar or
wide mouthed bottle and applied to
the cankers with a paint brush
about 1 1-2 inches wide. Round and
oval brushes are especially good
because they hold large amount
of solution. Larger bushes may
be used for large scaffled branches
and trunks. If an open jar is used,
only enough of the solution to last
about an hour should be taken at
one time as the alcohol evaporates
rapidly. A heavy wire can be wrap
ped about the neck of the jar to
serve as handle.
In applying the solution, begin
about Is inches above the signs of
the disease in the bark. Lift the
brush carefully from the solution,
so that it will be dripping-full of
the liquid, and then paint down.
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