Milford chronicle., 1907-03-08

sui 20 mound
SAT- pound
Watef-..... gallon
/, The lime, sulphur and salt should be bOileC
? together 10 at least 25 gallons of water for
period of 3O45 minutes; the rest OF the water
may then be added and the material is ready
, for application. The boiling may be done either
by steam or over a fire. II done in the latter
way, only iron kettles should be used, as cop
per or brass receptacles or galvanized iron
watts are easily corroded by the wash
In applying this material much discomfort
may be avoided by wearing rubber gloves
and smearing the face with vaselne.
The lime-sulphur wash may be applied late
in the fall, in the winter or early in the spring
It is best applied shortly before the buds oper.
1t cannot be used upon trees in foliage.
THE MIsCIBLE OILS.
Thereare three proprietary insecticides upon
the market, which have been used quite ex-
tensively in Delaware the past season. They
are commonly known as "SOluble Oils" and
sold under the trade names "Scaleeide." "KiI-
O-Scale" and Target Brand Scale Destroyer"
'Scalecide" is manufactured and put upon
the market by the B. G. Pratt Company. No.
II Broadway, New York City "Kil. O-scaIe' is
distributed by the Grifith & Turner Company.
Baltimore, Md, and Target Brand Scale De- |
stroyer" is manufactured and sold by the
American Horticultural Distributing Com. |
panyr Martiasburg, West Virginia.
The manufacturers OF these insecticides or.
dinarily recommend their use at the rate of
one part to twenty parts OF water, and the
writer has, in some instances had satisfactory
results from their use at this rate. However,
1t would now seem advisable, In view ofsome
personal experience and the reported expert
eHce of others, to recommend their use at the
rate OF one part to not more than fifteen paris
of water
The misclble oils are easy to handle since
they mix readily with cold water, and there is
nothing in the spray mixture TO clog the noz-
zles or corrode the pumps Another point in
their favor is that they are not caustie like the
lime-sulphur wash, and there is ordinary but
little discomfort in their application Their
cost, however, If considerably greater than
hat Of the lime-sulphur wash, and their value
As fungicides has not yet been satisfactorily
proven.
In using these oils, one point should always
'e borne In mind the contents Of the original
'aekage, be it small or large, should be thor J
ughly agitated before any portion is mixed {
ith water for spraying The reason for this f
that in some cases there appears to be a I
sparation ofthe oils upon standing the resu t
eing that at the top OF the receptacle a ma .
'rial may be found quite different from that Il
B the bottom. Some serious injury to trees, 5
this state, has been attributed TO failure to n
Oserve this important point v
KEROSENE EMULsIoNs. h
Kerosene emulsions have been used in com. b
lting scale-insects for many years, and heir st
alue as an insecticide for sucking insects was o.
mn
eir use has been fomnd in the fact that their 81
eparation, by the old fashioned methods, was e'
slow and laborious process. The formula
ID directions usually given for the standard NJ
nulsion are as follows: W
ard \ nound M
@ .-.--..i gallon yl
gallon ~
jut the soap into thin slices aud boil In the II
tier until dissolved, then add the hot suds of
the kerosene. An ordinary buckle: pump. to
TED with short piece of hose and a nozzle in
tn about one quarter inch aperature should
en- be ssed to churn the mixture until a per- =
t emulsion has formed.
When in this condition IL is thick and
amy and white in color The emulsion
is made contains about 66 per cent. kero-
le and this may be readily diluted with
ter to give any per cent. desired. When so
uied 1t should be applied in the form of a
e spray.
or the San Jose Scale, while the trees are
-mant, a 20 per cent. to 25 per cent emulsion
uld be used. To obtain this, add parts Of
Ter TO part OF the stock emulsion, (68 per
It. oily, described acove.
or summer treatment only n 10 per cent.
2 per cent. emulsion should be used, and
cial care should be taken that there is no
oil, as this will seriously iDjure the foli-
For this work add parts OF water to l
I Of the stock emulsion.
wing TO the great interest evinced in the
eibe oils, and the demand for good in !
icide for the San Jose Scale that can be ,
ly made and applied, the Station Chemist,
T. C. l.. Penny, has, during the past year.
oted considerable time 10 the study Of mis-
oils This work is not yet completed, r
has advanced so far that a soap has been
ected by means Of which kerosene in large
nlities may be readily emulsified without
necessity Of the boiling and churning op-
ions above described. This soap may be
ie at home, and a stock kept on hand
'ughout the year for use in combating
s.insects, plant-lice or other forms for
ch contact insecticides are commonly
/. Full directions for the preparation of
soap and figures relative to its cost will be
ID in Bulletin rs of the Delaware Station.
py Of which will be sent to any interested
y. This bulletin was issued last July and -,
to all persons whose names appear on "
stations mailing list. IN
closing this article. the writer wishes to th
to one point which cannot be
strongly emphasized, viz that no matter
.insectieide for the San Jose Scale is used. ne
york TO be effective must be thoroughly
The truth OF this statement may be
fully appreciated when it is realized that ge
al hundred millions Of scale insects NAV Su
in one season from single female that -
. touched by the spray and the Origina- IN
this large family may have occupied q
upon the tree not larger than the head De
ordinary pin at the time the spraying