The central record. (Lancaster, Ky.) 18??-current, 1918-05-30
THOROUGH APPLICATION OF DORMANT SPRAY.

prepared by the United r;a;es Depart.
ment Of Agriculture)
The spraying Of trees during winter
and spring, or when they are In dor
mant condition. IL directed largely
against scale insects, especially the
San Jose scale. There are two prin.
cipal advantages In spraying nj this
| time: ~ The absence Of foliage per-
mits Of more thorough applications.
and t2) the sprays may be used much
| stronger than during the growing
season. Contact sprays are employed.
as llme-sulphur solution. fsh-oll and
other soap washes, kerosene and crude
petroleum emulslons. miscible oils. and
the like. The prime essential Is thor
oughness In making applications. so as
to cover every part Of the tree. because
In general only those insects actually
hit with the spray are killed.
Applications may be made In late
fall as soon as most Of the leaves have
fallen. at favorable times during the
winter when the temperature Is above
the freezing point. or. preferably. In
the spring shortly before the buds are
due TO swell. There Is probably less
danger to fruit buds and twigs from the
use Of sprays In the spring than at 9TH
er times. Better results follow spray
Ing with limesulphur solution In late
spring than in late fall or during the
winter since this insures some spray
on the trees during early summer.
which is Of value In killing any young
scales, the offspring If adults, which
may have escaped destruction.
Important Orchard Work.
Spraying dormant trees for the San
Jose and other scales and for other In
sect pests has come to be very I'M
portant part Of orchard work. especial
~ In the East and on the Pacific slope.
and in general II Is possible 81 to time
this work that single application will
reach most of the troubles controllable
by dormant-tree sprays. Other things
being equal. the insectlcide having the
greatest range Of usefulness should be
employed. or the several dormant
tree sprays, the standard lime-sulphur
solution Is the one most generally used
against the San Jose scale. and II Is
equally effective against several other
insects which may coexist On the trees.
II is an excellent fungiclde. and, aside
from the Inconvenience experienced In
It's preparation and its dlsagreeable
character. II furnishes an ideal spray
for dormant trees. Abundant expert
encc has shown II To he an effective
remedy In the control OF the San Jose
other diasplne scales. rs the cherry
scale. the European fruit scale, and
reasonably so against the oyster-shell
scale, and the scurfy scale. Lecanium
scales, such rs the terrapin scale and
the brown apricot scale. are more ef-
fectlvely controlled by mneral-oil
sprays. The thorough treatment
each year. therefore. with lime
sulphur solution will keep well under
control the more important scale-ln-
sect pests Of the orchard.
There are certain other troubles con-
trolled by the dormaht'tree sprayihgs
with sulphur solution. II has been
found effective In destroying eggs Of
the pear'tree psyila ana mas long peen
Known as effective against the pear.
lear blister mite Inc req SPIDER ana
eggs Of the clover mite and other
mites are probably also destroyed. In
II applied in late spring, the
IN, s,,,h,r soi,,,to, ho, no., found