Evening times-Republican. [volume] (Marshalltown, Iowa) 1890-1923, 1919-02-07

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The belief that the 1919 esoea win y
exceptionally large y oaDe1 On III
fact that the seveateeu-yeAf brood
coming out this var " tgood 10. per.
haps the largest OF the seventeen ycal
broods and that brood rs Of the thir-
teen-year family comes out at tho
same time. The year 1855 was the
greatest locust year in history. In that
year brood 10. the largest Of tho thir'
teen-year broods. appeared In con-
junction with brood 10. tho two com.
hining to make an unprecedented In.
festation. The coincidence Of the larg
gest seventeen-year brood with d
smaller thirteen year brood this year
win not bring about conditions ap-
preaching those OF 1858.
Fear aroused by the presence OF this
insect In great numbers In out Of pro-
potion to the real damage likely to be
done. People In infected sections
should not become unduly alarmed bu'
should apply such methods Of confrol
as are possible. In young orchards
and nurseries. the safest method Is the
hand collection OF the insect at the
time Of emergence or as soon after.
ward AZ possible. Every cicada tries
to climb some plant or tree immedi-
ately after coming out OF the ground
and great numbers Of them can be
shaken OF and collected In bags OF
umbrellas. This practice may be con-
tinued for an indefinite time after the
emergence and the work should be
done very early in the morning OF
late in the evening when the insects
are somewhat torpid and sluggish
II undertaken at the first appearance
and repeated each day. control will be
facilitated BY the fact that most OF
the insects viii be on the young trees
or short branches, on on the lower
branches OF large trees and within
comparatively cary reach
insecticides Are Effective.
The destruction Of the cicada may
be accomplished with insecticides al
applied at the moment OF emergence
from the ground or shortly after IL
has shed It's pupal skin and Is still
soft and comparatively helpless. This
kind of work can be made very sue
cessful in small areas but could no:
be applied on large scale. Best re-
suits are obtained with pyrethrum
powder, Kerosene emulsions, a per
cent solution Of carbolIc acid. or Il
IS per cent solution OF acettc acid.
sprayed directly on the insects.
Not much success has been attained
with washes or other applications TO
prevent opposition. Ill-smelling sub
stances appear not to repel the cicada
There are some indications that the
insect dislikes to sit on white sur-
face and therefore whitewash Is De-
lieved to possess some efficiency as a
preventive Of opposition. though the
cicada win oviposit on whitewashea
trees IL no more pleasing places can
be found. A spray Of Bordeaux NIX
ture IL also believed to have some
value as a preventive.
Certain precautionary methods, now
ever. are OF more importance than the
curative ones. In all regions where
there is to be an appearance OF the
cicada, all pruning operations should
be neglected during the preceding
winter and spring in order to oner
larger twig growth and thus TO DIS
tribute the damage over greater sur
face. The planting of your orcharus
should be deferred until the danger IS
mast and the same advice applies TO
budding operations in the spring prior
to the cicada's appearance.