The Ocala banner. (Ocala, Marion County, Fla.) 1883-194?, 1911-08-11
WHITE FLY CAUSES LOSS or
$4,000. 600.

or the north pole, il would be but q
short time before a number of ex-
petitions would be making the dash
for the pole to capture the prize
Any single expedition would probably
10 spend less than 100000, while
some might spend four or Eve times
that amount
Basing the estimated loss due 10
the whitefy, upon 4 full crop OF g.
e00. 600 boxes 80 per cent, when 10
REMEDIAL measures, natural or arti-
fetal were applied. We would have an
annual loss 10 the citrus growers Of
3,000, 000 boxes Of fruit. or $4,000. 400
/ At one dollar per box
| II is generally estimate that the
fungus and probably other diseases
and insect enemies OF the whitefy,
when once present II q grove, give
relief 10 the extent Of 5 Is per cent,
or a full crop every third year II
boxes Of fruit this WOULD be z saving
principally due 10 the fungus dis
eases-of 100000 boxes in three
years or 100000 boxes per year. In
other words. the natural enemies Of
the whitefy saTe the growers $1,000
600 annually. This still leaves 2.000,-
600 boxes, or as many dollars. that
are lost annually
F.! If il costs ; cents per box of fruit
10 spray or fumigate the whiteay.
the cost of saving these s2.000.09o
might be 100000 Should it cost 10
cents per box the cost might be $780,
600. 1t appears, therefore. that the
probable cost of saving the s2,000. 900
in question is not so great in proper
ton TO the probable reward and each
grower concerned loses money by
not making the most OF the available
remedial measures at hand
The point is simply this, there is
probably loss of about $4,000. 900 an
nually that the grower has a chance
TO save. 4 part Of this can be saved
by dilligent spreading and respread-
ing Of the fungus diseases OF the
whitefy, as directed in bulletin 102,
Fla Expt. Sta. Fungus can be spread
al q cost of two cents per tree, or
less, so that a grower can afford 70
have the fungus spores during the
summer
In localities where the fungi do not
thrive sufficiently, careful spraying
with whaleoil soap or emulsions OF
oils should de bone. II has been
found that the whitef7y can be kept
sufficiently in check by thorough
spraying in spring april or May.
and fall October or November), be-
ginning about two weeks after the
adult whitef1y have quit swarming.
Spraying is advised at these times
because the immature stages
1arvae) of the whitefly are then thin
and fat and easiest destroyed BY the
weaker solutions necessary 10 employ
during the warm weather Spraying
may also be employed during winter
or some spraying may be necessary
during late June or July But II is
considered best to employ the fungi
during the periods OF summer rains
Spraying with insecticides during Oc-
.tober or November is frequently very
important from the standpoint Of
supplementing the fungi and loosen
ing sooty mold from fruit and leaves.
Sooty fruit, SPRAYED in fall with an
oil emulsion. could be washed much
cleaner than fruit SPRAYED.
Fumigation is excellent for winter
use in localities that lie isolated or
where cooperation between the grow
ers it attainable and the infestation
rot 50 great
For explicit directions on the use
Of the fungus diseases Of the white
fly. and when and how 10 spray with
insecticides, bulletin 103, Fla. Expt
! Sta, and recent numbers OF The
Florida Grower February and April
| and 28) should be consulted.
Two m.lion dollars can be saved
by spreading 100000. at the most
100000, and suppose that it cost
$1,000 then there would still be 100
per cent profit.
| II should Re defnateIy understood
that the assumption OF a 5000. 900 box
crop IS arbitrary. but intended TO ap-
proximate the product Of the state
during Al least some years the so
/ per cent loss assumed per annum as
due to whitefy where no remedial
measures, natural or artificial are ap-
piled. is the estimate OF growers. II
may be questioned whether those
counties infested with whitehy are
producing less fruit than those not in
tested, but some figures recently tab
ulated By the writer indicate that
they do to the extent OF about so per
cent. The difficulty OF compiling