Elmore County Republican. [volume] (Mountain Home, Idaho) 1910-1915, 1913-08-02
Apple or Green Aphis

Frequently inquiry Of what to do
for the green apple aphis leads to
the thought that others might be in
terested. The weather season of 1913
with more than normal rainfall has
favored increased numbers of green
apple aphis. Hot dry weather checks
development of the green aphis. Us
ually southern Idaho has hot dry
weather in July. The aphis is check
ed thereby and is not sufficiently
troublesome to reuire projecting
measures.
The green aphis attaches itself to
the underside of the leaves on vigor-
Gus growing trees, tom encins work
on the top shoots, and leaves be-
cause most Sill .crlent ami tender The
aphis is not often 'Ound IN large
numbers on the older trees or on ma
ture foliage.
Remedial Measures
Lime sulphur solution OF standard
strength used for San Jose Scale,
applied in early spring before buds
and leaves open will usually sterilize
most of the eggs of the grea1 aphis.
From all the information l can gather
the cheapest method Of combating
aphis is with the lime sulphur spray
used in early spring If trees are
three years old and over. Where
aphis attacks only few trees in the
orchard they may be checked by
spraying one and two year trees
with a hand pump carried; older
trees with a barrel or power sprayer
The aphis are quite likely to select
Rome Beauty, Grimes Golden and
Delicious trees before Jonathan and
Winesap on account of the more sue.
culent character of the foliage. In
our own experience the aphis were
not noticeable until we'll into May
at first on comparatively few trees
If sharply checked at this time, mucl
less harm comes than If allowed Il
grow to winged form and then fly tt
other trees. Our State Inspection
Department recommends the use O
Kerosene Emulsion, which may b.
made of any good laundry soap
Many use fish or whale oil soaps.
FORM ULA:- One pound Of soa
dissolved in one gallon Of hot water
Remove from fire and add two gallon
of Kerosene oil. Agitate by violentl
by pumping with force pump unit
completely emulsified, at this stag
cream colored substance. IN
, work of emulsifying should be we
done in five minutes or less. II the
] is any free kerosene oil the foliag
will be injured. To each gallon {
this emulsion add eight gallons {
water when ready for field worl
When large amount Is needed "
Il use eight to ten pounds Of soap wit
Il proportionate oil and water and NAL
Il dilute as needed. Silas Wilson r
/ ports good results from use OF Wha
oil soap, one pound to five gallon
of water. Others use nicotine, OF
part to nine hundred parts OF waite
AS nicotine is very expensive, lea
ing authorities advise the Kerosel
Emulsion. Kerosene Emulsion apple
II with force will check the woody aph
pest more difficult Of control WHIT
well established than the San 10
Scale. In the Manual of Horticultu
for Idaho, published 1907, Prof. A.
Hit gives the life history OF e
green aphis as appended 1.-The a
pie or what is commonly called t
green aphis IL by far the most &C
II spicuous and probably the most trt
II blesome of the list. That they
serious injury at times, especially
II young fruia trees cannot be question
II The egg Is laid in the late fall 81
II son by the mother insect, mostly
n apple and pear trees. II on the ap
III you may look for them near the e
ii of the last seasons growth. If
iii the pear tree you may find them
LII the somewhat larger limbs and