The Lynden tribune. [volume] (Lynden, Wash.) 1908-current, 1922-06-15
BEETLES THREATEN
LYNDEN BEAN CROP
Pest Eats Way Into Fields; State
Tells How To Combat Raw.
ages of Beetles

The bean crop of the Lynden
district is now threatened by the
attacks of an army of black
beetles, and growers are fighting
the insects hard.
c. M Creamer, manager of
the Lynden Cannery, consulted
with state college experts. and
advises the use of Bordeaux Mix
ture to kill the beetles. The mix
ture is to be used as follows:
Bordeaux mixture can be
bought in the form of a paste.
but more efficient form can be
made by combining the mater
ials just before using. The mix
ture is made from copper sulfate
+ tbluestone) and unslaked lime.
These materials are combined
with water. Common formulas
are the 4-4-50, $3.50, 6-6-50.
The numbers mean the amounts
of the ingredients, pounds of
! bluestone, 4 pounds of lime and
SO gallons of water. etc. The
bluestone is dissolved in 25 gall
Ions, half the water; the lime is
/ slaked in a little water and then
diluted to 25 gallons, the other
half of the water. These diluted
mixtures are then poured to-
gether or dipped into the spray
er. tank or other receptacle, care
being taken to see that the SOL
utions mix together as they are
poured. The resulting mixture
is the Bordeaux. Do not pour
one solution into the other. but
use third receptacle. After the
mixture is made it should be
used at once, but the copper sui
fate solution alone or the lime
water may be kept separately in
definitely.
The best way TO dissolve the
copper sulfate is to place the
quantity needed in a burlap sack
and suspend it in a barrel at the
surface of the required amount
of water. No stirring is needed as
the material will dissolve rapidly.
Stock solutions of the blue
stone and lime may be made in
quantities for future dilution.
Make separate concentrated sol
utions each of the copper sui
fate and slaked lime by using one
pound of material per gallon of
water used. When Bordeaux mix
TUE is needed, i gallon of tire
stock solution of either the blue
stone or lime is used for every
pound of these materials called
for in the formula. The solution
is then diluted and mixed in the
same manner as above described
Handle the copper sulfate SOL
ution and the Bordeaux mixture
in wooden vessels, but for the
lime this is not necessary. All
metal parts of equipment which
come in contact with Bordeaux
mixture should be lined with
brass to prevent corroding. If
much spray is to be made, an
elevated platform on which to
place the barrels and the mixing
tanks will save much labor, as
the solution can be carried thru
hose or troughs to the mixing
tank or the sprayer by gravity in
stead of by dipping. To prevent
elogging of the spray nozzels,
pass the mixture through
strainer when running il into
the sprayer tank to remove any
Jumps. Brass wire screen IS or
20-mesh makes a good strainer
When but few plants are to
be sprayed the Bordeaux can be
made in small quantities. Use
] following formulas:
i 2 level tablespoonfuls copper
sulfate, y cup slaked lime, !
gallon water.
y cup copper sulfate. 2iA cups
slaked lime, gallons water.
/ lb. copper sulfate, / III. slak-
ed lime, 1212 gals. water.
/ Add soap to the above at rate
of l OF. TO gallons of water.
Black leaf 40, lead arsenate
and soap may be used in combin-
alton with Bordeaux mixture.
/ The addition of soap TO the
+ bordeaux mixture aids it in stick
ng and also in spreading, 50
that the same amount of spray
will cover more area. Use soap
at the rate of ! to pounds per
+ gallons. Shave the soap fine, dis
solve it and then add to the spray
Black leaf 40 is used at rate
of 1-3 pint to so gallons of dill
uted Bordeaux spray, or ! tea
spoonful to gallon of the spray
Lead arsenate added at the rate
of / lb. to so gallons of Bordeaux