Rogue River courier. (Grants Pass, Or.) 1886-1927, 1910-09-02

sumo TO know It all, regardless of
opinions of men who are admitted
authority in their line. The article
in question, as We have already said,
is well written, but II smacks of the
academic and at times reminds one
OF high school thesis. The Courier
will not pretend to be able to answer
this effusion, its own store of know
ledge We admit being limited. but
We are enabled to quote from we'll
known authors and authorities who
have already covered this subject.
Mr. Fromme has taken so much
space that we are obliged to con-
tent ourselves with the use of only
q small amount of material.
A letter from Prof. P. J. OGara,
pathologist and entomologist of the
United States department of Agri-
culture addressed to the editor of
the Courier says:
Replying to your recent favor, I
may say that from the strict sense
OF the word, insects and other pests
which injure and destroy forest
trees do not attack orchard fruit
trees. However, it depends upon
what We should term forest trees.
From the lumberman's standpoint
trees belonging to the pine family,
such as the pines, hemlock, spruce,
redwood, cedar, juniper. cypress;
and oak, elm, walnut, hickory and
other commercial timbers rarely ever
harbor insects which may be trouble
some to the orchardist. However,
there are large number of shrubs
commonly found throughout the for
ests which, from the orchardist's
standpoint had better be destroyed
especially II growing adjacent to or
chards. It would take long time
TO discuss this important question.
and to give in detail the number of
species of wild shrubs and their in
sects, bacterial and fungus para
sites which may also attack the cul-
tivated fruit trees. A few instances
which may be considered economic
ally important are given below:
81. Wild shrubs which may be
parasitized by the pear blight germ
(hacillus amylovorus). These shrubs
belong to the pome or apple family
and include, perhaps 800 species be-
longing to the following genera
Malus, Sorbus, Amelanchier. Hetero-
meles, Crataegus and a few Others
which need not be mentioned. The
genus Crataegus contains perhaps
: $50 more or less we'll defined spe
cies. On the Pacific coast the genera
, Sorbus, Heteromeles. Crataegus
Malus and Amelanchier are repre-
sented by at least one species each
have found hold-over blight in one
3 case in the latter genus. namely
: Amelanchier alnifolia.
"2. Wild shrubs and trees which
, may be parasitized by fungi. AL
the above genera given under para
graph one may be parasitized by tn,
) apple rusts, Gymnosporangium sp.
Septoria sp., Sphaeropsis sp., Phyl
lostita sp., Ventura sp, and larg'
, number Of others. Under this head
ing may also be included such spe
I cies as belong to the wild cherry anC
= the wild plum. These, on the coast
r comprise about four species, beinl
= the red cherry, the western choke
S cherry and the Sierra plum. Thes
a species are parasitized by species o
y fungi belonging to the following
e genera. Sclerotinia, Plowrightia
Il Exoascus and Puccinia and others.
' "3. Wild shrubs and trees whicl
may be parasitlzed by San Jose seal
. (only few of the species commonl
or badly infested are given). Al
the genera in paragraphs and
! and the following: The poplars
: populus spp,; the gooseberries, Ribe
/. spp.; the roses, Rosa spp, the vii
. lows, Salix spp; ;snowberry, Sym
phoricarpus sp.; lilac, Syringa sp.
. bass wood, T!lia sp.; the elms, VI
). mus spp; the dogwoods. Cornu
u spp.
Besides the above the genera ot
i casionally infested By San Jos
u scale are naples, Acer spp. tn
. alders, Alnus spp.. the birchei
u Betula spp,; the box woods, Buxu
spp.; catalpas, Catalpa spp.; ash
a Fraxinus spp. the walnuts. Juglan
. spp.: mountain laurel, Kalmia spp
- California privet, Ligustrum sp
" white spruce, Picea alba; elder, San
~ bucus sp. Spirea sp.; vlburnui
- spp., and the grapes, Wits spp !
the above no attempt has been mad
TO give all the genera which al
e known TO be infested. Howeye