The Lubbock avalanche. (Lubbock, Tex.) 1909-1922, 1919-11-13

(By II. f. Mays, Horticultu
rist. Extension Service
MANY fruit growers are planning
10 spray their orchards this winter
and next summer. Too great care
cannot be exercised in selecting the
materials to be used. There are no
"cure-alls" 20 be used in spraying.
material that can be applied to XII
insects will probably have little or no
value in the control Of fungus DIS
eases. The right material must be
applied at the right time in order 70
show any results from the spraying
operation. II the wrong material Is
applied, il may not only have no
value in the control OF the spectre
nest mentioned. but il may seriously
iniure the tree to which il is applied
If the proper material is used you
can expect positive results.
The following are the more com
mon insecticides and fungicides that
are used in the control Of the insects
and diseases Of fruits.
bordeaux MIXTURE Bordeaux mix
ture is the original fungicide. II does
not have an insecticidal value. II IS
used in the control Of the grape dis
eases, apple and pear diseases, ana
combined with II an insecticide Is
added for the control Of insects that
attack these fruits. Bordeaux mix
ture is made by combination Of cop
per sulphate (bluestone), and lime
water. This material must not be
used on any Of the stone fruits. In
strnctions for making this material
may be secured on application TO this
office.
Commercial Liquid Lime sulphur
Commercial liquid lime sulphur y
the standard winter spray for all
fruits. As a winter spray II has both
insecticidal and fungicidal value. II
will control the San Jose scale, peach
leaf curl and be Of some value IN the
control Of scabs and blotches IN the
winter forms. II can also be used as
a summer spray for apples and pears,
but never as summer spray Tor
stone fruits.
Self-Boiled Lime Sulphur
preparation, as the name implies, IS
a mixture Of lime and sulphur and IS
prepared by boiling only with the
heat that is secured by the stacking
of the stone or rock lime. This ma
terial must be made in the orchard
al the time il is 70 be applied: II
should never be allowed to stand
over night before being used. This
- a material for the control Of scab
and brown rot, which are the diseases
that cause injury to the stone fruits
after they are formed.
Arsenate Of Lead.-Arsenate Of
lead is a standard insecticide for the
control Of chewing insects that at
tack fruits and vegetables. This
must be applied at the proper time
for the control Of the specific in
sects for which Il is applied. This Is
used in combination with any Of the
fungicides given above and may be
used without injury to the plants to
which Il Is applied. This Is attaina-
BILE either in a powder or paste form.
When used a. paste twice a. much
must be used az when used a. pow
der II Is not practical 70 buy the
ingredients and try TO make arssnste
Of lead on the farm. Il can be more
economically prepared in the large
factories. and there will he less dan
rsr u securing an improperly made
material than VIII By making 4 on
the farm.
The susssss u your operations In
controlling insects and diseases slse
aspsnds on tie pressure With which
thsy srs spplls1. Ihs higher ~
pfssssrs. ~ hsslsr ~ rsssIls. IN
-. --.X.A =. IX -. - - .