TEK MEDFORD (OREGON) MAIL TRIBUNE
Blight Infected Limbs
From Trees As Soon As
DISEASED TREE B. A. Montgomery points with saw to a
freshly cut portion of a bartlett pear tree affected by blight.
1 -lis is the first time in several years blight has struck this
orchard. This portion of the orchard was not treated with
copper spray during blossom season.
BAD YEAR This orchard was typical of many in Jackson
county during the 1930s when blight got out of control. Note
the extent to which limbs had to be cut off. More than 1,000
acres of trees had to be removed.
CUTTING LIMB Removing blight infected limb of a bartlett
pear tree with shears is demonstrated by B. A. Montgomery.
In his hip pocket is a bottle of mercuric cynide and bichlo
ride of mercury. This solution is used in disinfecting tools and
cut in wood.
OVER STOCKED!
Regular $235.00
October Special $219.00
Lettered and Set
Oregon Granite Co.
Fourth and Front
Monday, October 8, 1958
Should Be
Harvest Is
Dead, discolored leaves, brown
cankers and scarred fruit tree
trunks are some of the signs
which mark the path of blight.
Home owner; as well as or
chardists should remove blight
infected limbs from their pear
trees as soon as the crop is har
vested, according to C. B. Cordy,
county horticulture agent.
Scattering of Disease
A greater than usual scatter
ing of blight has been apparent
throughout the county this year,
he said. Though the countywide
problem is not yet regarded as
extreme, a few orchards have
been severely infected.
A common blight symptom i
the appearance of dead leaves
which fail to fall from the tree
Another symptom is a brown
canker margin, which is notice
able in close examination.
Blight frequently occurs in
blossoms and is easily spread to
other parts of the tree or to other
trees by wind and insects, the
county agent explained. This is
one reason why it i;; equally im
portant for home owners to treat
their individual trees as for com
mercial fruit growers to rid their
orchards of blight.
Grows in Wounds
The infection takes hold in
wounds in the fruit and trees.
The,ne wounds may be caused by
hail, severe wind or mechanical
injury.
There are two control methods
which must be used jointly to be
effective, he said. They consist
of applying copper spray during
bloom season, then cutting out
the infected portion of the tree
after harvest i completed.
Copper spray was developed
in the 1920s by F. C. Reimer, 436
North Holly st., then superin
tendent of the Southern Oregon
Experiment station.
Spray Developed
Reimer used the spray in the
Redskin and Modoc orchards in
the Table Rock area. It effective
ly curbed the disease, but the
great quantity of copper in the
spray caused rust to develop on
the fruit.
Oregon abandoned use of cop
per spray, but California growers
began experimenting with it a
few years later. It was. found
that a lesser amount of copper
could be used without materially
reducing the spray's effective
ness or causing excessive rust.
Oregon growers further devel
oped the new formula and Jack
son county became the center
BLIGHT SCAR This is an ex
ample of the permanent mark
blight leaves on trees. The dis
ease was carried to the main
trunk of this tree several years
ago by a "root sucker." Photo
shows that a portion of the trunk
near the ground was chopped
out. Outer surface of the trunk
was peeled off for an approxi
mate distance of 20 inches.
-"X.-rv
Open or add to yoor
savings account by
October 10 and earn
interest from October 1
at U. S. NoiionaL
'v !r , ' I Tp'f.li
Wit - -fhw
Si 15M mm
IDF
DIIECT BRANCH OF
" THE UNITED STATES NATIONAL BANK OF POFTTAND
MEMBER FEDERAL DEPOSIT INSURANCE CORPORATION
Removed
Comilete
of blight control experiments.
Since blight may spread be
yond the visible canker margin
at this season, it is necessary to
cut the limb six to eight inches
below the margin, Cordy said.
Disinfect Tools
Cutting through the canker
will result in a spread of blight
to other limbs by the cutting tool
unless the tool is disinfected.
After each cut, the tool should
be treated with a combination
of mercuric cyanide (another
product of Reimer's experiments)
and bi-chloride of mercury. This
combination will kill bacteria
on both the shears and the wood.
One 72 grain tablet of each
chemical to one-half pint water
is the recommended formula.
Both mercuric cynide and bi
chloride of mercury are avail
able in drug stores, Cordy said.
The chemical solution is' dead
ly poison, he emphasized, and
reacts to most metals. It should
be kept in a glass container while
being used. Any leftover solution
should be destroyed.
The solution should be ap
plied by sponge or cloth both on
the cut in the wood and the cut
ting tool. The chemicals may not
have a detrimental effect on
hands, but the county agent ad
vises washing hands thoroughly
after applying the solution.
Bad Blight Years
Twenty years ago Jackson
county was cor.-idered one of the
northwest's worst blight areas,
according to Cordy. "It was a
serious problem and more than
1,000 acres of trees were re
moved as a result. However, the
entire community orchardists
and home owners alike joined
in the battle against blight. We
didn't completely eradicate the
disease, but we did reduce it to
a great extent," he said.
Pears aren't the only plant
affected by blight. It also .strikes
apples and ornamental plants,
including hawthorne, pyacantha
and cotoneaster. In all cases,
Cordy said, the treatments are
the same cut out the infected
portion and apply copper spray
at blr-som time.
Some other areas have been
less successful in reducing blight
than Jackson county has been,
he commented. "This is because
they have relied on application
of copper pray without stressing
the importance of removing all
possible blight infections. Ex
perience has taught us spray is
not enough. The generally good
condition of our trees proves
that it also pays to cut out the
infection wherever they appear
and as soon as possible after they
are observed.
Appeal Planned in
Brink's Conviction
Boston U.R) Chief de
fense counsel Paul T. Smith
said Saturday he would appeal
the conviction of eight men
found guilty of looting Brink's
Inc. of $1,218,211 six years ago
in the nation's greatest cash
robbery.
The men, Joseph McGinnis,
Anthony Pino, Vincent J. Costa,
Adolph (Jazz) Maffie, Michael
V. Geagan, James I. Faherty,
Thomas F. Richardson and Hen
ry Baker, will be sentenced this
week to possible life terms.
Superior Judge Felix Forte
set Tuesday as a tentative sen
tencing date. A Suffolk county
jury found the eight guilty at
l:4o a.m. EDT Saturday after
three hours and 40 minutes of
deliberation. The nipe week
trial, which included more than
a million words of testimony,
was the longest in Massachusetts
court history.
BRANCH
DISINFECTING TOOLS B. A. Montgomery is shown using
a sponge to disinfect knife and shears after removing blight
infected portions of trees. After each cut the tools and cut in
wood should be disinfected with a sponge or cloth saturated
with a combination of mercuric cynide and bichloride of
mercury.
Washington ftJ.R) T. Cole
man Andrews, Independent can
didate for president, charged
Saturday that "the income tax
is thoroughly un-American."
CLEARANCE SALE OF 1956
DELUXE G-E FILTER-FLO WASHER
Available i00 e-
in SAVE
O W si
mum
Chicago (U.R) A mile
long, hour-long parade honoring
the nation's dairy farmers open
ed the fourth International
Dairy Show Saturday.
BARGAIN STORE ttSSf
Crews Uncover Trees
15,000 Years Old
Jefferson, Iowa (U.R) A
grove of trees, which last
bloomed about 15,000 years ago,
was unearthed by a highway con
struction crew Friday.
Several hundred trees in near
natural condition were found 35
feet below the earth surface near
here. Geologists said the trees,
some of which ranged 10 feet
r.
V . V. ' i
( , V
'tv
T :- v
Lansing, Mich. (U.B V. S.
Sen. William F. Knowlana told
a Republican club Friday night
the Nov. 6 election may be so
close that Michigan's 20 electoral
votes could determine the out
come. v
Ui Mall Trihun Want Adl
The Community's Biggest Marketplace
tall, had been snared in a layer
of black, sandy silt believed to
have been deposited by the Wis
consin glacial drift.
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