Rogue River courier. (Grants Pass, Or.) 1886-1927, 1909-11-26

stone should dissolve In "a hours.
This solution will not deteriorate and
may be kept indefinitely. however,
the barrel should be kept covered so
as to prevent evaporation OF the
water and consequent concentra-
tion of the solution. A stock solu-
tion OF lime may be made by shaking
so pounds of lime. and filling up the
stock tank, or barrel. to so gallons,
The stock solution or lime will not
keep indefinitely. and should not be
made up too much in advance of the
time 1t is to be used. Before using
either Of these two solutions, they
should be thoroughly stirred up. II
must be understood that iron uten-
sils or containers must not be used
In making bordeaux.
In carrying on large operations 1t
is we'll to provide an elevated plat
form on which to place the stock bar
rels of bluestone and lime. Besides
the stock barrels there should be
large dilution tanks. one for the
bluestone and one for the lime. Each
Of these large tanks should be large
enough to contain one-half OF the de-
sired amount OF bordeaux that Is to
be made up at one time, for instance
where the wagon tank has a capacity
OF 800 gallons the capacity of the di-
luton tanks should be $50 gallons
each, Let each dilution tank be pro-
vided with spigot. or pipe, so placed
that the solution, may he run
I through another pipe, or through
directly into the wagon tank Now
supposing II is desired to make g.
$50 bordeaux, all that is necessary
to do is to take 80 gallons Of the
hluestone stock solution and put Il
into the blpestone dilution tank, also
mt 20 gallons of the lime stock solu-
tion into the lime dilution tank, fill
eaoh IN to so gallons Stir the con-
tents IN, and then allow the two d.
lution tanks to empty simultaneously
into the water tank. OF course, II Is
understood that the solutions should
be strained the same as described
in the making up OF small quantities
! OF bordeaux.
Testing Bordeaux Mixture.
When bordeaux mixture is proper
ly prepared 1t is OF brilliant sky-blue
color II the lime is air slaked, or
otherwise inferior, or IL the blue
stone contains a considerable amount
of impurities, the mixture will have
greenish, or, perhaps, dirty green
color. In order to make certain that
the copper sulphate Is properly
neutralized by the lime, ten per
cent solution Of yellow prusslate OF
potash, procurable at any drug store,
may be used as a test. After stirring
/ the bordeaux mixture thoroughly, n
drop OF the test colution Is allowed to
| fall on the surface OF the mixture:
II free copper Is present reddish
brown color will be noted. How
ever, II the copper has been neutral
ized, which has been used, there will
he no reddlsh-brown color when a
drop of the test solution Is put into
the bordeaux. Probably, the best
way to make the test would be Ia
take a small quantity OF the bor-
deauy In a cup or glass and then add
q drop or two Of the test solution
Another simnle test Is to immerse
a bright niece OF iron or steel, such
as knife blade, into the freshly
prepared bordeaux. II the blade
hlackens II shows the presence OF
free copper and more lime must be
added Another test which which
indicate the presence OF a sufficient
quantity OF lime Is TO place small
quantity Of the freshly made Dor
deaux IN n shallow dish or saucer
by blowing the breath over the sur
face OF the mixture, thin film, o.
scum will form n there is an excess
OF lime. n no film Is formed thei
II Is to be understood that the come
has not bnen neutrallzed and NOR,
| limo must be added.
In rho first part Of this article
mention was made OF several form
ulae for making bordeaux mixture
The G-5-50. 5-5-b0 and 4-4-50 form
l ulae are those used mostly In dorm
ant SPRAYING. The $3.50 formul
and o'hers not eiven IN this artIcl,
whore = great excess OF lime ls used
IN more adapted TO sprayin
fruit trees during the growing sea
son, since the excess OF lime tend
TO prevent the burning OF the fol
age and the russeting OF the fruI
which is often termed bordeau
injury. For many diseases. such a
the brown-rot OF the peach. appl
scab and leaf spot diseases Of IN
apple, as well as many other diseases
| the self-boiled lime-sulphur spray