Oxford Democrat. [volume] (Paris, Me.) 1833-1933, 1914-04-14

not deteriorste 30 easily, and can be
made and applied at short notice. A di.
luton of one gallon of the regular solu-
ton of thirty-one degrees Baume to
forty gallons of water ls safe mixture
for all apple foliage. This 10 equally
efficient for fungus troubles and fol
the more delicate insect pests.
Another Of the moro recent develop.
ments in spraying work is the substitu'
ton of the western method for the con-
troll of the coddling moth. The common
practice in the East for the control Of
the coddling moth Is to spray the tree
just after the petals fall and while the
young apples are still standing erect,
with q mixture of arsenate OF lead,
about three to four pounds to fifty gal
Ions of water, using the so-called mist
or fine spray nozzle. The western meth
cd is to use zinc arsenite about ono
pound to fifty gallons of water, using a
high pressure power outfit and coarse
nozzle. The coarse spray, At high pres
sure, forces the poison directly into the
open calyx. And the results OF various
experiments have shown that one spray.
ing with the high pressure weaker solu-
ton and coarse nozzle gives very con-
siderably better result than the common
Eastern low pressure mist spray does.
The West Virginia Experiment Sta
ton found 2 percent wormy apples
where the high pressure was used, and
4 3 percent with the low pressure, and
80 percent wormy on the check plot.
However, the high pressure was given
only one spray while the low pressure
had two. Hence, the saving in time
and increased efficiency would warrant
the trying of this experiment, under our
Maine conditions.
In regard to spraying machinery, va
rious changes have taken place In the
last two or three years. For orchards
of a thousand trees or more, power
sprayers are much more efficient and
more economical than any other kind.
A good power sprsyer should hold not
less than 200 gallons of the mixture.
The pump should maintain constant
pressure Of 800 pounds to the square
inch IL necessary, and the duplex or the
triplex pumps are the ones best suited
to this work. To maintain this high
pressure there should be an automatic
control, either safety valve which re-
turns the mix'ure to the tank when the
pressure rises above 800 pounds, or
some method Of cutting out the pump in
order to maintain an even pressure.
This is absolutely necessary on high
pressure work. The old system Of hav-
ing the filling and supply tanks elevated
is gradually going out OF use. In place
Of this, we have the power filler attach
ment, with the spray outfit. This Is a
large hose which fills the tank under its
own power. A good power sprayer
should have the engine and tank self
contained, that is, both fast on perma.
nent base. The engine should be we'll
protected by a suitable covering and the
tank should be made Of such material as
will stand both extremes of heat and
cold without causing trouble. Iron
wheels and iron frames are usually con-
sidered the most satisfactory. The hose
should be five or six ply, OF the best
quality, standing at least 200 degrees
pressure. For power sprayer OF this
type, while the first cost is considerably
more. the efficiency in operation is at
least 100 percent over any barrel or hand
power outfit.