Smyrna times., 1910-05-18


cuio, Two Great Enemies
War against brown rot ard curcu-
lio, those enemies of the peach trees,
has been taken up vigorously by the |
State Board of Agriculture. Both |
these troubles may be prevented or
cured, although the late frosts were |
conducive to brown rot. What peach |
orchards are left standing in Della
ware after the recent axe campaign
to eliminate peach yellows, are full
of fruit. Limb after limb shows
hundeds of peaches to the banch, and
every effort will be made to save
them. The newest thing in spraying
in Delaware is the use Of arsenate of
lead and the self boiled lime sulphur
wash for the two great enemies of
the peach fruit, the curculio and the
brown rot. The United States De-
partment of Agriculture in connection
with the Experiment Stations of sew
eral 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 arsenate of lead and three
pounds of lime to so gallons of water.
In two or three weeks from this time
spray with the self-boiled lime sui
phur, with two pounds of arsenate of
lead to so gallons of the wash. A
month later spray with the self-boiled
lime sulphur, emitting 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 self-boiled ime-sulphur in
the second. For both the second and
third sprayings the self-boiled lime
sulphur is made by using 8 pounds of
quick lime and pounds of flour of
sulphur to so gallons of water. The
lime is placed in 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 shaking is over the
mass is cooled by adding cold water
and then the spray is diluted to so
gallons, and strained ready for spray
ing. No fire is used in this process.
Instead of this self boiled mixture,
one and half gallons of the COM
mercial lime sulphur wash is some
times 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 Delaware
State Board of agriculture from a
number of Experiment station men
giving their ews and experiences.
DR.. S. w. Flecher, director of the
Virginia station, says: "We are
strongly recommending the use of
lime-sulphur, either self-boiled,
home-boiled, or factory boiled, for
tho summer 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 lime-sulphur
diluted l to 30 on varieties of apples
subject to bordeaux injury, such as
Ben Davis, Winesap, Albemarle and
Grimes Golden.
Professor w H. Chandler of the
University of Missouri, writes: "This
station recommends the use of the
self-boiled lime sulhur and arsenate
of lead. or of arsenatr of lead with
plenty of lime, to control the peach
curculio and brown rot. A good many
men in this State have sprayed with
arsenate of lead twice and have haC
very little pea h scab or brown rot.
1t seems that the arsenate of leaC
has considerable value as fungicide,
and controlling curculio, almost con
trolls brown rot; so we recommend
either giving two sprayings will
arsenate of lead, the second of whicl
is combined with self-boiled sulphur
and another one about one month be.
fore the fruit is ripe with self-boilet
lime sulphur alone; or we recommend
the alternate plan of spraying twic
with the arsenate of lead using plent.
of lime to prevent injury"
Several others have tried thi
remedy and all recommend it in spit
of the fact that there is danger o
possible ininrv TO the neach leaves