The newspaper., 1907-07-19

Soap. Two rows in small block of
trees were sprayed with 40 pounds of
k-A-Nap soap dissolved in 200 gal
Ions of water. The effect was but little
better than that secured with the emui-
sions Strangely, however, it appeared
to be more effective on Rome Beauty
and other varieties than on Gano and
Ben Davis, where practically no effect
could be seen.
EXPERIMENT ". TAX A Nap
Soap and Tobacco Extract. 1t should
be said that Nikoteen, Rose Extract,
and Black Leaf Sheep-Dip are trade
names for essentially the same thing,
that is, rather concentrated extract
of tobacco. The following formula was
used:
Tak-A-Nap------..-... so pounds
Tobacco Extract 5 gallons
Water. 400 allons
This made two tanks full. The soap
and the tobacco extract were each
mixed up separately with a little water
and poured into the tank containing the
required amount (about 200 gallons.)
While it cannot be said that this was
completely effective, it was very fairly
so. Also, great majority of the
Woolly Aphis was destroyed by this
treatment, whereas in the previous
experiments there had been no obser-
vable effect.
EXPERIMENT V.-Tak-A-Nap Soap
and Tobacco Extract. In this expert
ment the quantity of soap was reduced
to 30 pounds for 400 gallons, all other
conditions of the experiment being the
same. Results appeared to be rather
better with the reduced amount of soap
than with larger quantity, especially
on the Woolly Aphis. Whether this
was because the thinner liquid came
through the nozzles better is not GER
tain, but is suggested as possible ex-
PLANTATION.
EXPERIMENT VI.--Crude Oil
Emulsion. This was made according to
the following formula:
Crude OH / gallon.
Whaleoil Soap -......-..I pound.
Water r..----.-......--.. 20 gallons.
The oil is a mineral oil recently dis
covered in Utah. but which has not yet
been put on the market. Whether or
not it will be in the near future proba-
bly, depends upon the success of some
of the experiments in which it is now
being used. AS only limited quantity
was available four trees were all that
were sprayed. While the results were
unsatisfactory, yet the limited quantity
which we had to use and one or two ac-
cidents which occurred in putting it on
make it impossible to announce the re-
suits positively until further trials on a
larger scale can be made. 1t does,
however, give promise of considerable
value as an insecticide. apparently act
ing against both species of aphis.
GENERAL RESULTS. Possibly it
is little early to speak of general re-
suits, since other experiments are now
in progress, an account of which will be
given in this paper later on. However,
there are two or three things which
ought to be noticed.
First, with regard to Tobacco and
Tobacco Extracts: the high price of
such materials as Nikoteen and similar
products make it seem highly desirable
that this be prepared from the tobacco
itself, either from leaves or stems, or
both. Such should be stepped rather
than boiled, since the alkaloids are
easily destroyed by boiling. 1t would
seem desirable, also, for every orchard
ist to grow his own supply of tobacco.
In the first place, this would give him a
better product at first hand than he
could buy, and the cost would probably
be somewhat less. Mr.. George Conklin
of the Delta County Fruit Growers As
sociation, raised two acres of tobacco a
few years ago from Burley seed. When
cured, it was found to be so strong as
to be absolutely worthless for smoking.
This very peculiarity, however, would
be great point in its favor for use as
an insecticide. Presumably the almost
continuous sunshine, the soil conditions,
and uniform supply of water produce
this extra strength in tobacco grown
here. At any rate. it is well worth a
trial