The Cook County herald. [volume] (Grand Marais, Minn.) 1893-1909, 1904-02-20
HOpTICI III PF,
Bordeaux Mixture,

Saat 'z~
Bordeaux >Mixture.,
Bordeaux mixture is fof very great
Importance to the orchardist, and the
matter OF it's compounding has been
frequently discussed In these col
umns.> Prof. J. T. Stinson, writing on
this subject. says: This preparation
Is now made either as liquid mix
ture or as a dry powder or dust. Bor-
deaux mixture (the hquid) has for
years been the standard and most ef-
nc1ent fungicide for general all-pur-
pose work that has ever come into
use. 1t has also been the subject of
much discussion at the several ex-
pertinent stations as to what is the
proper strength to use to obtain the
pest results, and as to it's effect on
the truit and foliage. So far rs the
amount of material to use is con-
cerned, it is quite probable that the
quality Especially of lime) and the
proportions of the materials is OF
much more Importance than the
amount. Four pounds of lime is con-
sldered sufficient to neutralize six
pounds OF blue stone; but it does not
seem necessary to utilize six pounds
OF this substance. AS good results
nave been obtained from the use Of
TOUR pounds as from using six. In
! tact the a. formula seems to give, If
possible, even better results than the
o." on account of the liability to in.
Jury from the use Of the strong mix
ture. Four pounds of good lime fur.
n1shes sufficient excess over what is
actually needed to neutralfze the four
pounds OF blue stone to insure against
injury IN all ordinary cases, and the
use OF any more would seem unneces.
sary, even were it only for the sake Of
being on the safe side. The object
OF the lime is to neutralize the blue
stone, to hold it on the plant and to
prevent the too rapid solution of the
copper by atmospheric agencies. Ac-
cord1ngly the formula given is prob
ably the most satisfactory for this
section OF the country. It Is one that
is in general use throughout the CEN
tral west and is recommended by the
experime ment stations in Ohio. Iowa,
!aRsss sIs1ss ssaaH sna y etAsn Y, i s.tsEa
Good stone lime Unjust not =
be air slacked). .......... 4 pounds
Copper sulphate (blue
StOue) ........s n0un6S
"o.oA ''''''.......... .5O gallons
Directions for Making-Slack the
four pounds of lime in one barrel or
tank, using just enough water to pre-
vent burning, then dilute to twenty
five gallons. Dissolve the four pounds
OF blue stone in another barrel or
tank, using twenty-five gallons of
water. Pour the two solutions into a
third tank or barrel by having two
men, one to dip from each and pour
together at the same time through q
sieve or coarse gunny sack into the
third tank, keeping the contents of
all the receptables we'll stirred dur
ing the making. Do not pour one
solution into the other, for a much
better mixture will be obtained III the
above directions are followed. The
reason for urging that the mixture be
made in this way are as follows: The
PARTICLES Of copper, which is the act
i've principle of the mixture, are in a
much more finely divided condition,
and for this reason the same amount
Of copper is distributed more evenly
over a greater surface, thus making
it more efficient. The mixture does
not settle nearly so rapidly because of
the small size OF the fakes of the cop
per. The violent and more incom-
plete chemical action that takes place
when the lime and blue stone are put
! together in concentrated condition is
avoided, and mixture is obtained
that Is much less likely to do injury.
Why lnsects Abound Now.
Prof. F. M. Webster: There are
three prime reasons which have made
spraying not only necessary, but in
many cases absolutely imperative, if
success is to be secured These are
CD the destruction of the food plants
of many of our now destructive ma
tive insects, and the replacing of these