The Hattiesburg news. (Hattiesburg, Miss.) 1908-1917, 1912-10-28

The sulphate of copper and lime
must be brought together in very di.
Lutte solutions for the best Bordeaux
mixture. The sulphate of copper re.
quires a considerable time to dis.
solve in water, and considerable time
is required for Stacking lime. For
these reasons 1t Is best to have a mix.
ing plant for making Bordeaux mix,
tsre. This mixing plant should con.
slst Of stock solution tank In which
enough sulphate of copper may be dis.
solved to last through one spraying, II
not through several. The sulphate Of
copper is usually dissolved in water
at the rate OF one pound to the gal
Ion. SO it is only necessary to dip
from the stock solution tank one gal
Ion In order to get one pound of sui.
phate of copper. Then there is nee.
essary for the lime an elevated slak.
ing box in which the lime may be
slaked and drawn down into a stock
solution tank. In this case, also, one
pound of lime should be dissolved in
a gallon Of water. The lime OF
course should be weighed before this
shaking. Two dilution tanks, such as
is shown in the figure. are also neces.
sary. one for sulphate of copper and
the other for lime. In these tanks
the substances are diluted before they
are run together into a mixing tank
or the spray tank. All of these
tanks should be on an elevated plat
form SO that the liquid can be run out
Of them into the spray tank below.
Where water pressure is not available
an elevated water tank is needed to
supply water to these stock solution
tanks, or In some cases a good pump
run by a gasoline engine may take
the place of the elevated water tank
In this case the water would be
direct from a pond or well
INTO the stock solution tanks and the
Hutton tanks. A good strainer is an
essential part Of the equipment. There
ire various types of strainers, but
probably one like that shown in the
1gure where the straicer comes to
yether in the center making four
'lanting surfaces through which the |
liquid can run is the most desirable
ype. This allows the sediment to
Iettle down toward the bottom, leav.
ng plenty Of straining surface about
The process of making Bordeaux
mixture with a plant like this would
hem as follows: First in making
he sulphate Of copper stock solution,
ssuming that the tank holds 100 gal.
ons, the tank should be filled nearly
nll OF water. then 100 pounds of the
ulphate Of copper should be weighed
ut and placed in gunny sack or
ome other porous material and sus.
ended Just in the top Of the liquid.
1t is poured into the bottom of the
ariel 1t will be some months before
would all be dissolved unless hot
alter is used. Then assuming that
le lime stock solution barrel holds
70 gallons, We should weigh out 100
FUNDS Of good stone lime, slake 1t In
70 elevated shaking box and draw It @
1t, usually through a strainer, into {
o lime stock solution tank and fill
o S"Ah ny 10 lVU BaliOnB.
Now suppose 1t is desired to make
0 gallons OF Bordeaux mixture at a
rength Of 4:40:50. After stirring, II
gallons of the sulphate of copper
'ck solution should be dipped into
sulphate of copper dilution tank m
d this tank filed up to 100 gallons. a,
len the lime stock solution barrel
ould be stirred thoroughly and 16
Ion dipped from 1t into the lime
ution tank. Then the contents of A
'se dilution tanks should be run pa
ough a strainer into a. separate
ring tank or directly into the spray
k. o.
1t lie desired to make only 100 wl
Ions Of the mixture, one-half OF
Sc quantities should be used In all
es, or If 1t is desired to make ONLY
gallons of the mixture, one-fourth pi'
.hese quantities should be used. m;
spi
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