The Mason County journal. [volume] (Shelton, W.T.) 1886-1927, 1897-12-31
SHELTON MASON WASHINGTON,

oe ADDED Keeping the mixture wei
stirred meanwhile. As the solution
must be kept we'll stirred when spray
ing 1t is best to use a pump with AL
agitator.
This spray is to be used only in the
winter when the leaves are off the
trees. The trees should first be well
pruned and the spray applied thorough
ly, care being taken that no part OIL
the tree, not even one of the smallest
twigs, does not receive its coating OF
the wash. (For methods of pruning
| see Bulletin No. 26 of this station, en-
titled Pruning Orchard Trees" by J
A. Balmer.)
If your trees are infested prune
and spray them now. Do pot leave
| them until the buds begin to open in
the spring for if you do many of the
leaves and buds will be injured and
many of the trees will remain unspray-
ed because you will not get around to
them in time.
Thinking it may he of interest we
give below the results of some OF the
experiments in spraying for this insect
carried on last winter. Four different
washes were used-kerosene emulsion,
whale-oii soap, rosin solution and the
sulphur- salt and lime wash. The
Kerosene emulsion gave very satisfac-
tory results when used in the proper
tion OF four gallons of water to one of
the emulsion; when six gallons of
water were used instead of four the re-
suits were not satisfactory. The
whale-oil soap gave good results when
used in the proportion of two pounds
Of soap to one gallon OF water but
when one pound of soap to gallon Of
water was used only about fifty per
cent of the insects were killed. The
rosin solution gave excellent results
when used winter strength. These
sprayings were all done by the College
two or three quite badly infested trees
being treated with each of various
strengths of the different washes.
The remainder of the orchard was
sprayed with the sulphur-salt and lime
wash and the results carefully watched
and noted. On all the trees that were
sprayed thoroughly over ninety five
per cent of the insects were killed but
as many OF the trees were not properly
pruned and as some of the long strag-
I Cling limps were not reached by the
spray many of the insects were left
untouched. These of course were a
source of annoyance on the fruit dur
ing the summer and make it neces-
sary that the whole orchard be
thoroughly sprayed again this winter.
The approximate cost of the differ
ent washes when made in large guam
titles is as follows :-Whale-oil soap
wash-$S.0O per 100 gallons; kerosene
emulsion, when used in the proper
tion of four gallons of water to one of
the emulsion-$3.0O per 100 gallons
resin wash (winter formula) about
$500 per 100 gallons; sulphur, salt
and lime-$17O per 100 gallons.
In WESTERN WASHINGTON.
Not until recently has the San Jose
scale appeared in Western Washing
ton in any considerable numbers so
we have carried on no experiments.
In view of the fact that the sulphur,
salt and lime does not give as satisfac-
tory results along the coast of Califor-
MIA as it does farther inland and as it
seems to be almost valueless in the
eastern states, it is very desirable that
experiments be made in Western
Washington to test the efficacy of
these washes there. The experiment
station will endeavor to have series
of such experiments carried on during
the present winter under It's direction
and would be glad to hear the results
obtained by others in fighting this
pest in that part of the state.
r. w. DOANE.
Washington Agricultural Expert
ment Station, Pullman, Wash,