Akron daily Democrat. [volume] (Akron, Ohio) 1892-1902, 1902-04-23
BULLETIN
OF Interest to
Grape Growers.
Experiment Station Will
Cooperate
--
To Stamp Out Grape Rot In
Ohio.

A bulletin on Grape Rot and Its
Prevention" has just been issued by
the Ohio Experimental Station, as fol.
lows:
Grape rot has been serious in many
Ohio vineyards during recent years.
this has been especially true since 1898
or 1900. The actual dates for the be-
ginning of the destructive prevalence
of grape rot are not actually known
to the Experiment Station. Upon this
point grape growers will confer a favor
by advising the Station.
The experiments conducted by the
Station botanist and his assistant have
proved that thorough and repeated
spraying for rot with the recommend
ed fungicides. Is an effective and pro-
titable remedy. The number of treat
ments made in 1901 was seven, begin
ming when the shoots were from one to
two feet long. The cost of this treat
ment was about 500 per acre; the
gross receipts per acre from sprayed
grapes was S125.20 per acre, and from
unsprayed grapes less than $1,000 per
acre in the anne vineyard. A full de-
scription of the experiments is pub
lished in bulletin 100, which will be
sent free on request.
Plant pathologists are quite well
agreed that Bordeaux mixture is the
most effective fungiclde for ordinary
N IN nj 10
per sulfate and lime. But Bordeaux
mixture may not be used upon fruit
as ripening approaches because 1t adj
heres to the fruit. For later spray
ings OH grapes, that Is after July 10 to
10, on Concords or other early varie-
ties. Soda Bordeaux mixture appears
to be very effective fungicide and is
cheaper than the 3mmonlacal copper
carbonate heretofore recommended.
This spray Is made from caustic soda
and copper sulfate. Full directions for
making soda Bordeaux mixture are
given in Bulletin No. 1870. Full direc.
tions for spraying apples and grapes
are contained in a Special spray cal
cndnr prepared for fiat pulpase. Both
will be sent upon application.
Grape growers are warned against
the use of Eau Celeste in wing
grapes or other fruits. This fungicide
which is made by using ammonia and
"copper" sulfate, Injuries the foliage and
the fruit will net ripen properly on
vines so treated.
The Ohio Experiment Station, by its
department of plant pathology. has
prepared to keep specialist in the
field during the season of 1902 to ad,
wise and direct vineyardists in the pro.
per preparations of the spray mix.
lures and in the prevention of grape
rot. and to conduct illustrative OK.
periments in certain localities. TO he
able to plan this work and TO be of
most service in it. more information is
wanted.
TO give this knowledge, grape grow.
ers who have suffered losses from rot
and who wish advice and direction in
the work of spraying aye requested to
write at once to the station Botanist
stating these facts, together with the
vineyard area. and the varieties that
have been lost by rot. After this in.
formation is at hand and the season
| arrives routes may be arranged and
notice given with dates of appoint
ments.
1t is the desire of the Experiment
Station to help all vineyardists in fight.
ing the grape rot, by advice and direc.
| tion, but the actual spraying work will
fall TO them and will not be undertak,
on by the Station. Vineyardists are adj
viscd to prepare. by providing good
traction or other spray pumps with
one or two lines of hose attached, ear.
rying nozzles at the end of the hose
1t has been found necessary to direct
the spray by holding the nozzles: trac.
tion sprayers that are not so arranged
must he changed to permit this il sue.
cessful spraying for grape rot is to
be secured. Address
EXPERIMENT STATION,
Wooster, D.