Washington standard. [volume] (Olympia, Wash. Territory) 1860-1921, 1902-04-18
SPRAYING CALENDAR
ISSUED FROM PULLMAN AGRI-
CULTURAL COLLEGE.

for the Benefit OF Orchardists and Fruit Grow.
ers-lt is Well to Take Advantage Of the Pes,
in Time-S0Me Of the Best Formulas fol
Given Emergencies.
For the benefit OF fruit growers
throughout the fruit districts of the
State spraying calendar has been is.
sued by the Washington Agricultural
college giving much valuable infor.
nation on pests and the best methods
for their destruction.
For the San Jose scale which at
tacks nearly all deciduous trees, spray.
ing should commence in February OF
March, with the sulphur salt and lime
solution.
The Peach Moth, or Twig Borer,
which attacks peach and sometimes
plum and cherry trees, spraying
should be commenced when the leaves
are off the trees with solution of kero.
sene emulsion, part to ten parts OF
water.
The Goblin moth, one of the worst
pests the fruit grower has to contend
with. is given especial attention by the
college calendar. This pest attacks
mainly apple and pear trees. Paris
green is the agent used for its destruc.
ton and should be used a. soon As the
blossoms fall. A second spraying
should be given two weeks later. Fol
the coast region and the Palouse re-
gion these two sprayines are sufficient
In the peach growing valleys, such as
the Walla Walla, three or four addi.
tional sprayings are necessary, one
each in July. August and September.
The best methods for destroying
other pests that have proved 90 trou.
blesome TO fruit growers are given al
follows:
Bud moth, all trees, use paris green,
just as the buds open in spring.
Oyster shell bark louse, attacks ap.
pie trees mainly, use concentrated lye
one pound to one gallon OF water when
leaves are off the tree.
Flea beetle, which favors the beet
and potato, use bordeaux as coon az
the insects appear. After the eggs
under the scales hatch (May Is to
June 15) spraying with kerosene
emulsion. part to 10 parts water; OF
whale oil soap. l pound to five gallons
OF water, are effective. Repeat often
enough to keep new foliage protected.
Peach tree borer attacking peach
and prune trees. Dig out worms in
fall and spring with knife. During
the growing season, mound up earth
about base of tree to a height of one
foot.
For the slug, which shows a prefer.
ence for pear and cherry trees, use
paris green when the insects appear.
The Red Spider, all fruit trees being
its prey, is successfully destroyed by
an application of sulphur.salt.lime
when the leaves are off the trees. For
the cherry aphis and plum aphis ker-
osene emulsion has been found to be
effective just as soon az the insects ap-
pear. If necessary repeat the spray.
ing. For the green aphis which at.
tacks apple trees, the cabbage aphis
woolly aphis which attacks apple trees,
kerosene emulsion is the remedy to be
applied as soon as the insects appear.
Repeat if necessary. Leaf curl, peach
trees, use sulphur salt-lime just before
the buds open. For brown rot vi
fruit mould attacking plum, cherry
and peach trees, bordeaux has been
found an iniallible remedy when used
just before the blossoms open. A Sec
ond spraying is necessary just after
the blossoms fall. Spray third time
10 to IL days later, with copper ace.
tate, 8 ounces to so gallons OF water
Before first spraying, gather and burn
all mummified fruits. Thin green
fruit so that each one is separate.
Scab on apple and pear trees and
the potato has been successfully com.
batted by using bordeaux on the two
former just before the blossoms open