The Fargo forum and daily republican. [volume] (Fargo, N.D.) 1894-1957, 1914-08-20
DESTRUCTION OF
WILLOW PESTS
OFFICE OF EXTENSION DEPART
MENT. NORTH DAKOTA A. c.
GIVES VALUABLE ADVICE RE-
eARoINe PESTS AND HOW TO
ELIMINATE THEM.
FrOm extension department,

M IL. a. NJ
1 Serious complaints have been COM
ing in during the season OF insect
pests upon the willow. One OF the
comomnest of these is a Clark brown
or black caterpillar that begins feed
ing early in June, and continues its
Iravages throughout the growing sea-
son. This is the larval form OF a pur-
pie black butterfly with a yellow band
around the margin of h wings. The
common name OF this butterfly is the
Mourning Cloak 1t is known 10 enty-
mologists as yanessa antiopa- This
insect is worse upon small willows,
which is fortunate as these can be
more easily sprayed. When taken in
time. this is not a difficult insect to
destroy. The difficulty is that most
people wait until the trees are defoli-
ated before seeking Information as TO
the best way to get rid of 1t II re-
quires a much larger amount o. pois-
ON to kill the full grown lsTyae, and
also the reduced leaf surface makes it
dificuit to get enough poison on the
plant to kill them If h plant can
be thoroughly sprayed with any stand
ard poison prepared early an the sea-
son, the caterpillars are killed with
very little effort
The poison commonly used for this
and other such insects is paris green,
used at the rate of one-han pound to
fifty gallons of water. A somewhat
better remedy, because 1T adheres
longer to the foliage, is ~aTsenate of
lead. used at the rate OF one pound to
twelve or fifteen gallons of water.
Both of these should be applied as q
hne misty spray so as to thoroughly
wet both sides of the leaves.
Another eneny of the willow report
ed from the northern part of The state
=N --S1rnw~r GO x~L l~r
Americana). This is the larval form
OF an insect that belongs to h same
| family as the currant worm, so de-
s~tructiye to currants and ~goIseberries
In the early part OF the seAso The
willow saw-fy somewhat resembles a
large wasp in appearance. Its habits
are different, and its temper is far
milder, probably owing to the fact
that IL lacks the power of singing. 1t
Is i'm the lRrvaI stages that the damage
is done. The larvae bear ar possible
resemblance to the adult insect They
are something ever an inch in length,
and when full grown. are nearly an
inch and q half long. They are about
the diameter of a pencil, and when
found upon the bushes are always
coiled up ON top of the leaves. They
are a chalky white in color. with
hrownish head, and a brown line ex-
tending along the back
The same remedy that il used rnI
the willow caterpillar VIII destroy tins
gaw-ny. Ii can also be readily de-
gtroyed by white heiibore- the remedy
that is universally used for the cur
rant worm.
Another pest of the willow that il
very commonly found is the purpls
willow louise While NOS plant lies
are green in color, this ons IS purple
or q purpfiSh brown. H lis also raE1cf
larger than the ordinary Ps1mt lOuse
and instead of sucking the sap from
the leaves, 1T attaches itself to TIT
Young twigs. where Id inserts its heal
and sucks the sap throughout th'
growSng season OF the tree In fact
III IA often found i'm very large MUM
1 hers after the leaves have dropped IL
4 the fan. ON account OF this methDg
of feeding, III cannot be destroyed wftE
Fsbssnn. THE remedy used for this ina
sscr mnst he something winch kills bs
f~ronsara- One of this cheapest and com.
manegt RaHacfemt remedies of this cEasa
ss kerosene emulsion, made ss follows
Rramg two or three quarts Of wafer ii
n boEa in 81 Large pail 0T sizsSHar reeep
1 tar8A. and shave i'm about aMC ounce
A0s soaR After taas soap lis 6HssDfWea
aremWova Ehe pail from the Ebpve, aml
STIR IA one ramE of karnsEaaR. stir rhSs
! vigorously mntas ut aaAkes ii aaFhier. ns
screarmy mass after thEs hs dome AL
abnnx six quarts of MzHer- Ef ore Eaaa
q mugmhar Of ETess to Spray Ill WILL al
= 40 RS" 49,