Arizona republican. [volume] (Phoenix, Ariz.) 1890-1930, 1914-09-10
MAY PROHIBIT
ORANGE STOCK
ENTRIES SOON
State Agricultural Commits
sion Seriously Considering
Extending Citrus Tree
Quarantine to All Points
Outside Of Arizona.

| OuloIoC vi al lLOlld.
AT the present time a white fly
quarantine order of the Arizona COM
mission of agriculture and horticul-
ture No. prohibits the importation
into the state of Arizona of citrus
nursery stock from all states Dor
dering on the Gulf of Mexico, Geor-
gia and South Carolina, while a red
and yellow citrus scale quarantine
No. prohibits the importation of
all citrus nursery stock from the
state of California, except from Tu-
| lare, Fresno and Imperial counties
Circumstances now indicate the adj
| visibility of Arizona citrus industry
being still further safeguarded by
general quarantine against all citrus
| r"rsery stock grown outside the
state and the state entomologist
whose duty it is to sadvise the com
mission concerning such matters, de-
sires to warn all prospective import
ers of citrus nursery stock from the
| California counties now exempted
| from the provisions of our quaran-
tines, that it his intention to strong
ly recommend such an extension of
the state guarantees at the next
meeting of the commission, which
viii be held at Phoenix during the
week of the state fair, November !
to u.
The necessity for increased protec-
ton for the citrus industry of Ari-
IONA arises from The discovery of a
new scale insect in California and Of
u new citrus disease in the gulf coast
states The insect has until recently
been confused with the common soft
brown scale (Which up to two sea-
sons ago was a very common occur
renee on oleanders in the Salt River
Valley, but is now distinguished by
Its dull gray color irregular yellow
stripes and certain other features.
It is not known to live on any other
food plant than citrus, whereas the
soft brown scale has a long list of
known food plants. The gray scale
las it has been called, is widely dis
Itributed in California, including FresI
} no and Tulare counties. In the lat
ter county about $1,000 acres have
DteH IOuIu 10 Dt mort VI ltSS III
tested. In the worst cases fruiting
has been stopped and the trees are
a sticky mass of honeydew and smut.
The "honeydew," it should be said.
is an excretion of the insects and the
smut" is a black fungus growth
which develops in it. The gray scale
is not easily controlled by either
spraying or fumigation, and it
seems destined to be ranked with the
most destructive citrus pests. Leav
ing out consideration Of all citrus
l pests except the red, yellow and gray
scales, the distribution of these three
pests and their destructveness in the
. hotter and drier interior valleys of
California demands that, for the pro-
: lection of Arzona's citrus industry
strict quarantine be maintained
against all citrus nursery stock
5 grown in that state.
The new citrus disease of the gulf
coast states, mentioned above, is
known as citrus canker" This dis
ease in known to occur in Texas.
louisiana Alabama and Florida. The
last named state VIGOROUSLY negli-
of protecting her great fruit industry,
has recently declared an absolute
= Quarantine against all citrus nursery
stock from all outside sources and
is making a strong effort to stamp
lout the disease which had just be-
. gun to secure a foothold in that
state at the time when it was discov-
cred
The discovery of a new citrus in
sect enemy in California and of a
lnew citrus disease in the gulf coast
. citrus region is of much significance
, to the citrus growing districts of Ari-
} IONA, which are still practically free
from pests and shows the danger in
ltransplantng citrus trees for orchard
V planting purposes from one state to
q |another The safest way. and the
@ most economical from all viewpoints,
S is to plant only home grown citrus
s nursery stock. The only occasion
k for permitting the Introduction of cit
q rus stock from one state into an
Or other is when there is believed &c
= be a safe source of supply and when
e the home grown supply is not suf-
O ficient to meet the demands. Al
# present the situation is that there Is
IF no outside source of citrus nursery
q stock which can be considered safe
=. Ito a satisfactory degree while the
: home grown supply is fully adequate
" to meet all demands. The time seems
IS lripe. therefore, for the proposed ex
n tension of the citrus quarantine. Al
10 planters intending to use other thai
t Arizona grown citrus nursery stool
,r are advised, therefore, to await thu
~ faction of the commission before clos
10 linz contracts. A. w. MORRILL,,
re State Entomologist
-O<-
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