The Caldwell tribune. [volume] (Caldwell, Idaho Territory [Idaho]) 1883-1928, 1909-01-09
The plan and results Of these expert
ments are briefly given here.

The plan and results of these expert
ments are briefly given here.
The Orchards.
The first problem that had to be
satisfied in working out these expert
ments was that of securing a suitta-
bit orchard for the work. Two such
orchards were found near Moscow, on
the place Of Mr.. w. H. Conner One
orchard consisted of about five acres
while the other had about three acres
of seven year old trees of Jonathan
and Ben Davis varieties. Both had
been affected by the codling moth al
most to the extreme limit the season
before; in fact, the gentleman who
purchased the fruit in 1907 claimed
that from IS to SO per cent Of the crop
was affected by the worms. Here
then was apparently a good chance to
test the efficiency Of spray material
as far as controlling the codling moth
was concerned But it was further
hoped that conditions might also IA
vor the development of apple scab and
the relative merits of the various
sprays as preventatives of scab as
certained. Scab, however, failed to
develop to any marked extent and the
work from this view point failed to
present any very interesting figures.
These orchards had never been
sprayed before, but they had been
thoroughly cultivated each season
and usually garden crops had been
raised between the rows of trees.
The Plan.
AS stated before, the information
sought fell under three heads: first,
testing the relative merits of the
liquid and the dust methods of spray
ing; second, testing the merits of
lime-sulphur sprays compared with
Bordeaux mixture as representatives. of
scab; and third, testing the efficiency
Of different number of applications of
arsenicals for controlling the codling
moth. AS a source from which in
formation relative to the efficiency of
liquid and dust methods of spraying,
the orchards were divided into plats
and each liquid plat had an opposing
dust plat that received the same num-
Der Of applications Of spray and on
approximately the same dates. Some
little variation, however, existed in
dates Of spraying with the two kinds
Of sprays owing to the fact that en-
deavor was made to have quiet days
on which to apply the dust. It was
also planned that the material used in
the two different methods should also
be comparable to some extent, espe-
ctally from the fungicidal standpoint.
The dust material was obtained from
the Dust Sprayer Manufacturing COM
pany, st. Joseph, Mo-, while the liquid
sprays were obtained as noted below.
Testing the merits of the lime-sul-
phur sprays with Bordeaux for apple
scab constituted the second phase Of |
the experiments. In this a CONNER
cial and home prepared lime sui
phur mixture were used; in the for
mer case Rex Lime-sulphur was taken
and a self-boiled preparation in the
latter.
The third problem of the subject
vas to test the number of applications
Of arsenicals for controlling the cod
ling moth. In this, the plan adopted
was to spray one plat twice, another
three times and still another four
lines for the moth.
The Equipment.
For all dust spraying a Cyclone
Dust Sprayer, manufactured by the
Dust Sprayer Manufacturing Co., of
st. Joseph, Mo-, should be as effective
as any dust sprayer. This machine
was placed in a wagon and driven
rom tree to tree as the spraying was
accomplished. In the liquid spray
ng a hand pump manufactured by the
Bean Manufacturing Co., of Can Jose,
Cal, was used. This pump was
mounted on low truck and provided
With a 100 gallon supply tank. Agita-
ion of the spray material was ac-
by means of a paddle op-
'rated through the top of the tank.
The nozzle used was the Mistry, Jr.,
me of the Vermovel type. Two leads
II hose were run and a pressure from
90 to 120 pounds was maintained dur
ng all the spraying.