The Hood River glacier. (Hood River, Or.) 1889-1933, 1918-02-28

that its general adoption, without the
experience of tests and thorough trials,
would prove disastrous. Growers
should give this new inovatlon a very
thorough trial. Set aside a block of
trees in your orchard and use the gun.
Don't spray the entire orchard with 1t
in the first application.
After using the apparatus on this
block you should carefully go over
each tree and determine the results Of
your work. 1t will be necessary to ex-
anime the top foliage before drawing
any conclusions. If your observations
convince you that everything is being
well coated. upper and undersurfaces
Of the leaves as well as the fruit, then
you will be justified in proceeding with
this system over the orchard. If you
are not entirely satisfied with the gun
by all means go back to the rods and
wait until the new plan OF spraying
has: been worked up to a point where
it will give good results. If you pro-
ceed with your spraying IN the face OF
poor work you will have many regrets
later on.
1t is not the purpose of the writer to
unduly criticise the manufacturers or
condemn the spray guns. On the othet
hand we should encourage manufac-
turers of spray machinery and appar-
atus to extend every energy IN the
production of more effective and etiici-
ent spray machinery in order that the
ever increasing problems and demands
of the orchardist may be simplifed.
1t takes time and experience for the
grower to effectively adopt ne" prln-
ciples, normal procedure then will
save both grower and manufacturer
much trouble and loss.
The results obtained in our dusting
experiments during 1917 were not very
conclusive as far as scab control is
! concerned. Weather conditions were
| not favorable for scab development,
with a result scab infection wasn't
sufficiently severe to permit the draw
ing of any conclusion That dust sui.
phur, properly applied. will contro
scab there is no doubt. This was de-
termined in our control work during
| 1916 In all Of the blocks, however,
that part sprayed with liquid has giver
the better results in both the contro
of scab and coding moth.
As has been mentioned before, tht
wind is the most discouraglng factor
with which we have had to contend
4 The presence Of light breeze makes
/ the complete covering of the trees al
most impossible. AS a usual thing
under the conditions existing at HooC
River it has been found impracticablt
to attempt busting after $50 a, M,
owing TO the air currents which begi
at that time. With one or two exeep
tious all of the writer work has beer
done between A 80 and o clock in thu
morning, at wfach time atmosphere,
conditions were very quiet md Yer.
complete covering of the trees wa
made possible.
j Experimental work is to be contin
ued for another year, at least, but a
the present time the system appears t
the writer as one auxiliary to liquit
spraying. In this role, however, i
would be of much value in the case o
emergencies. especially where it wa
found necessary to get over the orch
ard in a hurry, for one reason or an
other, for the dust can besmuch NOR
speedily applied than the liquid.
The failure in the excessive develop
ment of apple scab in the Northwes
during the past seaon should material
~ assist in it's control during the com
ing season. In Hood River this natura
factor combined with very effectiv
work on the part of many grower
reduced infection in numerous orchard
to one per cent or even less. The foil