The Greeley tribune., 1912-03-21

than 80. Trees that are from 16
to rs years OF age will require q
least 10 to 20 gallons of spray pei
tree II thorough spraying Is done
For one acre of trees. putting the
average at is gallons per tree. II
would take 800 gallons of spray, OF
AZ tanks Of the ordinary GOO gal
lon) size.
Unless water is very handy and
other conveniences proportionately
so, it is seldom that more than nine
tanks can be applied in day with
TWO leads OF hose. and medium
coarse nozzles. In other words, only
two acres of such orchard can be
we'll sprayed in one day with one
power sprayer. Allowing the maxi
mum time of ten days for the
calyces to remain open. only 20
acres Of orchard can be treated
with one machine. Yet l know OF
dozens of machines that are ex-
pected to spray two or three times
as much in a season, and owners OF
orchards so sprayed condemn the
arsenate of lead used. the methods
of spraying advocated by those
scientific mem, and possibly
else. except the real rea-
son for failure. a desire to make
one machine do more than 1t can
possibly accomplish.
Besides the provision for main
tenance of a high pressure. there
are other things that the power
sprayer should possess in order that
the highest degree of efficiency in
spraying may. result.
The agitation of the liquid in the
tank Is an important matter. In
the case OF most Of our sprays. the
particles that make up
the insecticide are suspended In the
water. Unless a sprayer is equip
ped with q good agitator. these
particles will settle to the bottom.
Ihus rendering the mixture in the
Iop Of the tank weaker than it
should be, and that in the bottom
stronger, possibly in some cases too
gtrong for safe application. Most
n the power sprayers are equipped
With suitable agitators. and none
Ihould be purchased unless 1t 10
Known that 1t Ia efficient in this re-
lpect.
It is needless to say that the
'SsS bPA m6Nuiu0Iy uuOuAQ
lever be neglected. Tho man who
,ays $500 for an outfit cannot we'll
I60rd to let 1t stand out over win
or where metal parts will rust.
vhere the tank will dry out and de-
eriorate, II 1t is a wooden one. Too
'ften. gasoline engines are ruined
'ecause water is left In the cooling
acket until cold weather comes on.
I freezes there and the engine 10
lseless until another cylinder 10
Much of the trouble with . gaso-
Inc power sprayer could be pre-
ented II care we're exercised in the
all. to clean the OUTFIT thoroughly,
o drain the engine. to care for the
ozxles. leads OF hose, etc Then, in
he spring. another careful over
aulfng ought to put II in such
hape that there should be little
rouble during the spraying season.
Not only should all this be done.
ut always after a lime and sulphur
: other caustic spray u used. the
1achine should be thoroughly
leaned by running clear water
trough 1t. including hose. rod and |
osxles. The spray will not only |
,ture different parts Of the ma
hine. but will also harden and
mall pieces will clog nozxles whom |
gain used.
The power sprayer IL q high pric-
q piece OF machinery, but II 10 an |
nective piece of machinery, whom
roperly handled. Its usefulness I
IN be greatly decreased by improp-
r care.
GEORGE p. WELDON.
'ep. State Ent.. Colorado Expert
ment Station. Fort Collins.