The Wenatchee daily world. [volume] (Wenatchee, Wash.) 1905-1971, 1908-05-16

observations of the foreman and pick
ers.
This season We used the same
Eagle brand of arsenate of lead, but
in the proportion of one pound to 40
nozzles set at an angle of about 45
gallons. We used a Bean power
sprayer working at $50 to 200 pounds
pressure. Each of the two extension
rods was fitted with two Bordeaux
degrees. This arrangement of the
nozzles enabled us to throw the spray
through all parts of the tree by sim
ply twisting the rod. 1t is to this sim
pie device that much of our success
is due. The spray was rained on
until the trees commenced to drip. At
the first spraying we did not stop
even then, but by the time we were
satisfied that every flower cup was
filled with spray, the ground beneath
the trees was wet. To spray thus
took from seven to fifteen gallons to
each tree, whereas but three gallons
or less sufIiced for the second spray
ing, but even so we used much less
arsenate of lead than had been put
on the year before.
spraying methods, such as varying the
strength of the spray at the different
sprayings. We also wished to COM
pare with the older brands two new
makes of arsenate of lead, Vreeland's
and Lavanberg's. Vreeland's brand
of arsenate of lead has a higher ar
senic content than any other brand
We know, containing over 20 per cent
of arsenic as compared with the IA
per cent of the usual brands. Although
a dozen experiments intended to show
the best strength of spray were car
ried on they gave no results for COM
parison. Throughout the tests the
weaker spray gave as good effects as
the stronger, and all the brands Of
arsenate proved alike in producing a
perfectly clean crop. 1t may be en-
phasiZed as we have stated in pre-
vious publications that success de-
ponds not so much on a correct for
mula, nor, with the exception of the
first spraying, On the exact timing of
the sprayings, but altogether on the
manner in which the spraying is done.
"At picking time representative
trees were stripped. The results of
the tests have too much uniformity
for comparison, and but reiterate the
Importance ofproper spraying regard
less of what brand is used.
These tests were conducted in
what was acknowledged the wormiest
part of the orchard. The trees from
which the counts were made we're adj
jacent TO a packing shed which had
contained 1,400 boxes CT wormy culls
the winter previous. Half of this
wormy fruit was fed to stock during
the winter. The remainder was kept
in the shed until it decayed in the
spring. At any rate whatever moths
came from this mass of wOrmy fruit
had every opportunity to lay their
eggs on the very trees from which
the counts were made. The foreman
stated that in this portion Of the or
chard the ground had been covered
with wormy windfalls the year before,
estimating that there had been nearly
two hundred boxes of windfalls to the
acre left on the ground when the
crop was picked. This year scarcely
a windfall was to be seen.
THE relation of the wormy and
good apples Of the trees stripped and
counted is one worm TO 1000 apples,
or one-tenth Of one per cent. The FOL
lowing letter from Fir. L2lban shows
that the stripped trees We're repre-
sentative of the entire orchard, even
though they must have received the
eggs of thousands of moths from the
sheds that settled on them in prefer
ence to flying into the interior of the
orchard.
"Glencoye Fruit Farm,
Wenatchee, Oct. 81, 1907.