Heppner gazette. [volume] (Heppner, Morrow County, Or.) 1892-1912, 1911-05-11
Combined Treatment for Apple Scab
and Cooling Moth.

The first application is primarily
an apple scab spray. Use lime-sul-
phur diluted 1-30 with water (basis
of 80 degree Baume stock solution)
and apply just as the buds are sepa-
rating in the cluster and show color.
No arsenate of lead is necessary at
this time unless the bud moth is pres
ent, in which case add two pounds of
neutral arsenate of lead to each so
gallons of diluted lime-sulphur. If
aphis are present add black leaf 40
to the lime-sulphur in the proportion
of gallon to 800. When the latter is
mixed with the lime-sulphur there
will be small amount of grayish sed-
iment thrown down, which, however,
does not affect the value of the spray
to any appreciable extent.
The second application should be
made just after the petals fall and be-
fore the calyx closes. Use lime-sul
phur 1-30 to which has been added two
pounds of neutral arsenate of lead to
each so gallons This is the second
scab and the first codling moth spray.
The third application in orchards
that are badly infested with apple
scab, spray ten days or two weeks
after the second with lime-sulphur,
summer strength, or with self-boiled
lime-sulphur (8-8-50). This is dis
tinctly scab spray and in regions
where scab is not prevalent may be
omitted Where leaf-eating insects
are present, two pounds of arsenate
of lead should be added to each fifty
gallons of spray. In those sections
of the state where scab is not present
and it is necessary to spray for leaf
eating insects, arsenate of lead may
be diluted with water in the proper
ton of two pounds to fifty gallons.
The fourth application, the second
spray for codling moth should be ap-
piled at the time the eggs of the first
generation moths are Matching or just
as the very earliest worms are begin
ming to enter the fruit. In the great
er portion of the Willamette valley
this will be usually between June 25th
and July 1st, although the dates vary
somewhat with the season. This date
is also approximately correct for most
portions of the Hood River valley, but
in Southern Oregon and most portions
of the Grande Ronde valley this ap-
plication should be made somewhat
earlier Use two pounds of arsenate
of lead to fifty gallons of water
The fifth application, an application
of arsenate of lead should be applied
as preventive of injury by codling
moth about four or five weeks after
the fourth. In the Willamette valley
this will be about August 1st to 10th.
This date, however, varies in different
parts of the state as above noted, and
the application should be made when
the first young larvae are found enter
ing the fruit.
The sixth application, the fourth
spray for codling moth, corresponds to
the fall spraying for bud moth and
should be applied in the Willamette
valley about September 25th to Octo-
Der 1st. Use arsenate of lead in the
proportion of two pounds to so gal
Ions of water. In case the bud moth
is not present in the orchard and the
previous codling moth sprays have
been thoroughly applied this applica-
ton may be omitted. In case apple
scab has been particularly prevalent
or the fall rains begin early it would
be well to use lime-sulphur 130 at
this time for the purpose of limiting
| fall infaction This would also be
desirable if the orchard is badly in
tested with apple tree anthracnose.
Supplementary Methods of Controlling
Appfa Crah