The Pioche weekly record. [volume] (Pioche, Nev.) 1877-1900, 1893-08-03
SPRAYING MACHINERY.
Newspaper Bulletin No. T.,

Inc Following Is written IN response to
numerous inquiries regarding the proper
spraying machinery suited to general
work in the application of insecticides
and fungicides.
/ The recently increasing demand
throughout the country for spraying
apparatus has led to the production OF
many forms Of force pumps and nozzles.
Most of these are manufactured in the
east, but recently the demand in Califor.
MIA for such apparatus has made impera-
tive the establishment on this coast of
manufactures and agencies for spraying
machinery of the most approved pat.
terms.
The suitability of the force pump en-
ployed is dependent upon the nature of
the work to be accomplished. The large
orchards Of California demand the use of
pumps of large capacity. These permit
the use OF two or more spray discharges
and consequently require an extreme
amount OF force in their management.
There is however little if any call as vet
in Nevada for machinery permitting such
wholesale work.
Another extreme is represented in the
small pump manipulated by one hand
while the other directs the nozzle. Such
are very satisfactory when employed
upon small plants and shrubs of limited
numbers, but for orchard pumps these
pumps are utterly useless. Not only is
the required labor unduly increased, but
worst OF all the spray, if it reaches the
upper branches at all, has little or no
force as it does.
For general farm use the most available
force pump is doubtless one that will
keep two discharge pipes of one half inch
hose constantly filed with considerable
pressure. To run such pump the labor
OF one man will be required. But one of
the discharges need be used in spraying
proper, the other with partially obstruct.
ed outlet may be directed into the supply
receptacle as an agitator. This is necess.
airy with such substances as remain in
mechanical mixture only, the active por.
ton OF which will settle if undisturbed
When using other liquids requiring no
agitation this discharge may be cut off,
thus giving increased force to the nozzle
discharge.
The most important virtue of the pump
lies in the force that can be impaired to
its discharge Herein lies great part Of
the secret Of successful spraying. To
aid this, a-inch hose is greatly to be pre-.
ferred over Finch hose which is also
much heavier and more cumbersome.
For orchard work twenty-five or thirty
feet OF hose is none too much. To no
part of the spraying outfit is greater i'm.
portance due than to the nozzle and its
use. Upon these, aided by the proper
force from the pump, is dependent the
thoroughness with which the work OF
spraying can be accomplished.
In general the best nozzle is that which
resolves the stream into a foe mist
which still retains considerable part Of
the force impaired by the pump.
twill be seen. that such a spray will
extend at most but few feet beyond the
nozzle. Experience has demonstrated
that to obtain best results. the nozzle
must be held close to the point of attack.
10 meet this. the modern spraying outfit
includes an extension" which consists Of
a light gas-pipe six or eight feet long
encased in bamboo. This connecting
the hose and nozzle permits the latter to
be brought close to the uppermost
branches where the work may be as
thoroughly done as below. For tempo.
rary use, the extension" may be re.
placed by an ordinary bamboo pole to one
extremity of which the hose bearing the
nozzle may be attached, the operator
then holding the hose with the other OK.
tremity Of the bamboo.
These leading features of the spraying
outfit are generally admitted to be
essential and the writer cannot do other
than advise their observance by those
intending the purchase of spraying appa.
ratus.
A more complete description of the
various nozzles in use is reserved for q
forthcoming article.
F. H. HILLMAN.
Agricultural Experiment Station,