Rock Island Argus. (Rock Island, Ill.) 1893-1920, 1905-04-14

Ito apply them. has been issued by the
Iowa agricultural experiment station.
The pamphlet gives some very valua-
BILE information anent the protection of
trees and plants from disease and in
lsects, and should be in the hands of
every farmer and gardener in the state.
An outline of the calendar is given
herewith:
IuSectides.
Most insects can be divided from an
economic standpoint int those that
are able. from the structure of their
jaws To eat the solid parts of plants.
and those that are only able to such
the plant juices. The former are called
biting insects. the latter sucking in
sects. Only the former can usually be
destroyed by poisons that are eaten;
the latter can be killed only by in
sectides that destroy by merely coming
in contact with. For biting insects a
paris green solution. made by mixing
one pound of paris green with two
| pounds of fresh lime and 200 gallons
of water, will be found effective. Paris
green may be also applied dry in the
| form of dust. using one pound of the
poison TO 20 pounds of common flour,
| landplaster or slaked lime. Flour is
mentioned as being the best. as il is
eaten more freely by the insects. Dust
should be applied when the plants are
wet with dew.
Another very effective destroyer of
the biting class of insects as given in
the calendar is a lead arsenic solu-
ton, and is made by dissolving II
ounces of lead acetate (sugar of lead)
and four ounces of sodium arsenate in
80 gallons of water. PulveriZe and
dissolve the acetate and arsenate sep
arately in small quantities of water,
add separately to remainder of water,
and stir thoroughly. This, while more
expensive than paris green, has the
advantage of being more adhesive and
less liable to burn the foliage. This
material may also be purchased ready
prepared. The amounts of chemicals
may be also used for % gallons of wa
ter. in which case it is, of course, dou-
bic strength.
Arsenic of Lime.
Another very effective poison. known
as arsenite of lime, is made by dissolv-
ing two ounces of white arsenic, one
half pound of sal soda and four ounces
of fresh lime in 80 gallons of water
Boil the arsenic and soda together in
a small quantity of water till the ar
senic is dissolved; Stake the lime;
strain and add TO the barrel of water;
then add the soda and arsenic solution
and stir for few minutes. The dis
solved arsenate and soda may be kept
indefinitely in tight glass vessels.
The last mixture given in the calen-
dar for the elimination of the so-called
biting insects is resin-lime mixture,
and is made from five pounds of pull
verified resin, one pound of concen-
trated I've, one pint of fish oil, or any
cheap animal oil except tallow, and
five gallons of water Place the oil, !
resin and gallon of water in an iron
kettle and heat until the resin is soft
ened; add I've solution made as for hard
soap; stir thoroughly; add remainder
of water, and boil for about two hours.
or until the mixture will unite with |
cold water making a clear. amber-col- |
Ored fluid. If the mixture has boiled !
away too much. add sufficient boiling |
water TO make five gallons. For use. |
one gallon of this stock solution is 1
diluted with 16 gallons of water and /
three gallons of milkOf. /
lime or whitewash is added. For cab
bage and cauliflower add one pound Of /
paris green to 80 gallons of the above |
mixture. This, of course, is "A rank
poison, and must not be used after the
plants begin to head.
InsectIdes That Kill by Contact.
For the class known as sucking in
sects, or those that can only be killed
by coming in direct contact with the
a kerosene emulsion, made in
the following manner, will be found
effective: Kerosene, two gallons:
rain water. one gallon; soap, one-half
pound Dissolve the soap in water by
boiling; take from the fire. and while
hot. turn in kerosene and churn brisk
ly for five minutes. This should be
diluted with nine parts water before
using. This mixture is effective for
scale and all sucking insects.
Another mixture that will effectively
destroy this class Of insects. and which
can be prepared veTy cheaply. is made
by pouring four gallons of boiling water
over one pound of tobacco waste or
stemsD After the mixture is cold.
strain and add one pound of whale oil
soap or two pounds of soft soap 10
each 80 gallons Of infusion.
FunEicideE.
For the elimination Of fungi, such as
apple scab. scab. brown rot. strawberry
rust. etc, the following. known as the
Bordeaux mixture. viii be found ef
fective:
Copper sulphate, four pounds quick
lime mot airslaked). four pounds;
water. 30 TO so gallons Cor one barreD /
Dissolve the copper sulphate (blue
stonel by suspending it in a wooden