Newark post., 1910-05-18
PRESS BULLETIN
OF The Delaware State Board OF Ar
riculture

| The newest thing in spraying in
| Delaware is the use of arsenate of
lead and the self boiled lime sui
phur wash for the two great ene-
mics OF the peach fruit, the cur
culio and the brown rot. The
| United States Department Of Ag-
rlculture in connection with the
Experiment Stations of several OF
the States, has been working on
the problem and a pretty definite
recommendation is now made. 1t
is as follows: Spray about the
time the caps fall off the fruit with
two pounds Of lane to so gallons
OF water. In two or three weeks
from this time spray with the self
boiled lime sulphur, with two lbs.
OF arsenate OF lead to so gallons
OF the wash. A month later spray
with the self-boiled lime sulphur,
omltting the arsenate of lead. The
arsenate lead paste is mixed with
little water and added to the lime
water in the first instance and to
the seli-boiled lime-sulphur in the
second. For both the second and
the third sprayings the self-boiled
lime sulphur is made by using 8
pounds OF quick lime and 8 pounds
OF Hour OF sulphur to 50 gallons OF
water. The lime is placed in a
suitable barrel or other receptacle,
and about two or three gallons of
cold water is poured over it, and
as soon as it begins to slake the
moistened sulphur is added. AS
soon as the slaking is over the
mass is cooled by adding cold
water and then the spray is dilut-
ed to 80 gallons, and strained
ready for spraying. No fire is used
III this process. Instead of this
self-bolled mixture, one and half
gallons OF the commercial lime
sulphur wash is sometimes used
to the so gallons OF water, and the
two pounds OF arsenate of lead.
In response to inquiries, letters
have been received by the Della
ware State Board OF Agriculture
from number of Experiment
station men giving their views
and experiences. DR.. S. w. Flet-
cher, director OF the Virginia sta.
ton, says; I'VE are strongly re-
commencing the use of lime-sul-
phur, eithI self-boiled, home boil
ed. or factory boiled, for the sum
mer spraying OF tree fruits. We
are especially recommending the
use of self-boiled lime sulphur and
arsenate OF lead on peaches, and
the use Of factory boiled ihne-sul-
phur diluted | to 80 on varieties
of apples subject to bordeaux in
jury, such as Ben Davis, Winesap.
Albenlarle, and Grimes Golden"
Professor w. H. Chandler, OF
the University OF Missouri, writes
| his station recommends the use
OF the self-boiled lime sulphur and
arsenate OF lead, or of arsenate of
lead with plenty of lime, to con-
troll the peach curculio and brown
rot. a good many men in this
State have sprayed with arsenate
OF lead twice and have had very
little peach scab or brown rot. 1t
seems that the arsenate of lead has
considerable value as fungicide. |
and controlling curculio, almost
controls brown rot; so we re-
recommend either giving two
sprayings with arsenate of lead |
the second of which is combined |
with self-boiled lime sulphur, ard |
another one about one month be-
fore the fruit is ripe with self-boil-
ed lime sulphur alone; or we re-
commend the alternate plan of
spraying twice with the arsenate
of lead, using plenty OF lime to
prevent injury
Several others have tried this
remedy and all recommend it in|
spite OF the fact that there is dan
ger of possible injury to the peach
leaves.
Dover, Del, $40, 1910.