Cheyenne record., 1919-03-27
Often Desirable to Employ Some
Method Surer Than That Of
Girdling.
AUSTRALIAN PLAN IS GOOD
Ussful Directions for Making Poison
Solution for Quick and Effective
Work In All Kinds Of Timber
) Are Given.

ment OF Agr1culture.)
In cleaning up pasture land or clear
ing new land for crops 1t Is often
desirable to kill trees. by some method
surer and quicker than the old-time
method of girdling. In dealing with
the kinds Of trees which sprOut from
the stump, such as the oaks. hicko-
ries, and red gum, a reliable method
of killing is especially needed.
For the purpose Of poisoning trees,
arsenic has been successfully used in
both this and other countries, often
killing trees in q few weeks or few
days which by the simple girdling
process would require months. Useful
directions for making up poison 90
luton for quick and effective work in
all kinds of timber, together with the
method of application are given be-
low, quoted from recent number OF
the Australia Forestry Journal. In
Australia, it appears. much investiga-
ton has, been widely used with ex-
celleit results.
Formula Found Good.
Following is the formula:
Arsenic. / pound.
Water, WWnssans snalfsns. + RSnnd'
Washing soda. pound. or caustic SODA.
u pound.
Since the ordinary white arsenious
oxide of commerce is not soluble In
water to any great degree, soda has
to be used for the purpose. When
large a1hounts Of the poison are de-
sired washing soda will be- cheaper.
but for small. amounts caustlc soda
will perhaps be found the handiest.
To prepare the solution, first dis
solve the soda (either f0rm) in con-
venient amount Of water, using heat,
u desirable, to assist and hasten it {;
then slowly add the arsenic. previously
made into thin paste Gas the house
wife treats her corn-flour), stirring
all the time; place on a strong fire,
and after 1t has come to. the boil. al
low 1t to remain boiling for at least
half an hour; stir from time to time,
and be careful to stand on the side
away from the fumes, as, being pOis-
onous, they are apt to cause sickness.
When the arsenic is thoroughly dis
solved, the solution may be made up
to the required bulk by adding the
remainder Of the water, either hot
: or cold. The whiting is added merely
to serve as an indicator Of the trees
treated. Us 1t turns white on drying.
Winter Best Season.
The best time for carrying on the
operation Of poisoning is when the
tree is dormant, or during the winter
months. This will most surely pre-
vent suckering, although trees can
be killed practically any time Of the
year.
In applying the poison, the tree IL
first girdled by SERIES Of heavy down
ward strokes Of the az through the
bark and well into the wood, leaving
the chips protruding outward in q
"frill" extending completely around
the tree. It is necessary that this
'.frilling" process be thoroughly done.
which alone would ordinarily kill the
tree after some time. A half pint
for small trees to quart for very
large trees Of the poison is then poured
into the clipped surface, taking care
to saturate the wood thoroughly. An
old teapot or kettle with a spout
serves well the purpose Of pourins
without needless waste or spilling
down the trees. Saplings may. be cut
OF low down and the poison applied
over the stump by swab stick. II
this is done when the sap is down
the tree will be completely killed and
suckering prevented.