The San Francisco call., 1903-01-12
DOOM Of GOBLIN
MOTHS At HAND
Experts Believe They
Have Found Method
Of Spraying.
Scientific Work Promises
Death to Pests Of the
Pajaro Valley.

BERKELEY, Jan 11.-Larvae Of thO
Goblin moth destroyed $4,000 worth Of ap-
pies for the orchardists of the Pajaro VAL
ley last season. according to their own
estimate, and this sum, and more, the
University of California expects to save
them in another year through the work Of
Professor c. W. Woodwork Of the ento-
mological department and Entomologist
Warren T.. Clarke. These experts re-
turned to-day from that region and they
are confident that they can successfully
combat the ravages of the Goblin moth.
They do not hope to exterminate the pest.
but they believe that by spraying properly
and at the proper time the moth Will be
destroyed In such numbers that practical
ly no damage will be done.
ORCHARDISTS LENDING AID.
The district in which Professor Wood
worth and EntomoIosist Clarke have been
carrying on their Investigations since the
I'd inst. covers 5000 acres in the PajarO
Valley, with Watsonville as It's shipping
point. 1t is conceded to be by far the
greatest apple region in the State. there
being 100000 trees in II. owned by 500
people AT least 80 per cent Of the trees.
Professor Woodwork says, are troubled
with the Goblin moth.
The Orchardists are lending every aid
possible to the university experts, and the
work will be most thoroughly done. The
orchardists who compose the Pajaro Val
ley Association will bear the expense OF
the spraying and such expense as the en-
tomOlogists may see nit to carry on
Work will be commenced Immediately
| on breeding boxes, built here under the
direction of the experts. Each box will
contain thirty bottles. into which the
chardists, on the receipt Of them. VIII
place thirty cOcoOns. Careful watch will
be kept and as soon as the moth matches.
word Will be sent to the university. This
method is new and 1t Is the most complete
plan ever formed TO determine the time OF
the birth of the moth. 1t is at this period
in the life of the pest that the experts be-
lieve that the paris green spray will be the
most effective.
CONFIDENT OF SUCCESS.
Professor Woodwork, besides receiving
reports from the Orchardlsts, will keep on
the grounds himself as much as possible
between now and the summer vacation
Mr.. Clarke will return to the infested or
chards on April l and will remain there
until the spraying is over. He will be
Joined when college closes by Professor
Woodwork.
According to Investigations heretofore
carried on. Matching time Is about May L
The pest Is now in worm form
Professor Woodwork said tonight:
Il feel confident we can stop the troubls.
1t will be impossible to exterminate the
moth, but by proper spraying we can
make the loss from the worm practically
nothing Besides paris green spray, we
will try everything that suggests itself to
us. We may have TO spray several times
in one season before the work will be sue
cessful. Even then the cost will be very
| small, compared with what was lost this
| season. Paris green spray has been used
before. of course. but not properly. Ii
must be used exactly at the right time or
II will not be effective