The Caucasian. [volume] (Alexandria, La.) 1874-1875, 1874-07-25
Protection Against Cotton Insects.

one hundred and seventy different
counties in the cotton growing States
Alabama and Texas being represent
ed by the most numerous and COM
plete statements. Ofthese, one hun
dred reported that no experiments
with Paris green, Or arsenical pre-
parations, had been tried; many were
from counties in which little cotton
is ever grown, and others were from
counties where the worms have never
appeared.
l. EFFICACY OF PARIS GREEN.-O
the seventy returns reporting actual
experiment large proportion, at
least four-ffths of all, declare the
success, either full or partial, of the
application of mixtures of Paris green
or other arsen;cal compounds, when
they are properly applied. Some are
content with the simple declaration
that it is an effectual' remedy
Where it is most generally used it IS
most approved. In New Iberia, I1a.,
where q machine that will powder
Is to Is acres per day is in use, it is
said that fifty planters have found it
successful. In Wilkinson, M Mississ-
ippi where a simple compound of
Paris green and flour was used, crows
treated with the compound were
healthy and vigorous, while neglect
ed rows beside them were destroyed"
In Landry, Texas, zone application
Of Paris green in solution resulted in
ten additional bales in a field of 35
acres, over the rate of production in
other fields where none was used
a similar result is reported from
Montgomery, Texas, by the use of
Paris green mixed with lime or plas-
ter, or even fine sand, where "a
neighbor has picked already ten
bales of 500 pounds each from 13
acres, while freedmen on the same
farm lost their whole crop by refus-
ing to use it." The correspondent
i'll Worth County, Ga, declares it
"was death to everything that eats
the leaves that have been sprnkled."
Some correspondents enjoin the nc
cessity Of repeated applications to
meet the appearance of successive
broods Of worms, as enough are left
after the most careful application to
perpetuate the noxious race. In some
cases, caution is suggested not to
make the application after the bolls
are open, lest it becomes dangerous
to picker and ginner." In the cases
OF failure mentioned there appears
no evidence that the application was
properly and persistently made, and
with pure article of Paris greep.-}
In some cases where it killed both
worms and plants, it is very evident
that the proportion Of Paris green
was too large or applied too heavily.
CoNcLUs1oN-F1 ON tho answers to
the various questions above quoted,
the following is summary of the
conclusions:
The use of Paris green, when pure
and unadulterated, mixed with flour
in the proportion of l part of Paris
green to rs to 80 parts Of flour, is Of
utility, and in many cases has saved |
the crops; thet in many instances
where the Paris green has failed it |
has been attributed to improper use
or using spurious article. Paris
green or arsenic, also used with wa
ter ana sprlnEled over the pants,
has been used with good effect, but
TO be of any avail the water must be
we'll mixed up and stirred at the time
of using it, as the Paris green or ar
senic is only partially soluble in wa
ter, and requires to be thoroughly
disseminated throughout the water,
to be deposited as slight coating of
poisonous powder on the leaves to be
OF any avail When Paris green or
arsenical compounds are used great
care must be taken not to make the
mixture too strong, or they will kill
or injure the leaves and plants.
When used as q powder busted over