The Cook County herald. [volume] (Grand Marais, Minn.) 1893-1909, 1900-09-01

q the orchard by their peculiar loop
Ing or measuring mode OF travel:
hence the common names. They are
more properly known as canker
worms, and can be found feeding on
apple, cherry. plum, and other fruit
tees and also 9n On elm and Other shade shade
trees. n. : -a.-''ss, -, =
The eggs are deposited IN masses
OF q hundred 81 more On the branches
and trunks Of trees on which the
worms feed: the fail canker worm
]. laying the eggs in the autumn, the
spring canker worm laying her eggs
T usually in early spring. II both cases
the sggs hatch white the Buds are
expanding, and the larvae feed upon
the leaves until full grown. When
( they occur in large numbers they FREE
Quently completely defoliate the.
trees. When full grown the larvae
are about an inch in length and they
then crawl down the tree or drop
down by means OF silken thread.
The adults of the fall canker worm
emerge at about the time the first
frosts appear. A few of the spring
canker worms emerge at this time
also, but the vast majority Of them
remain in the pupa state throughout
the winter and emerge as adults at
the first approach of warm weather
early the next spring. In all cases
the adult male canker worm has well
developed wings and can fly. I'm
like most moths, the female canker
worm never has wings at all, and
therefore cannot fly. She crawls to
suitable tree and ascends the trunk
to the limbs above; there she awaits
the male and then deposits her eggs.
It at once becomes evident that II
we can take advantage OF the weak
point" in these insects and prevent
the females from crawling up the
trees to deposit their eggs, we can
prevent the injury to the leaves.
This has been done in a number OF
ways. A band of loose cotton, tied
! ct the top only, or a band of tin fast
ened around the trunk of the tree, or
band Of heavy paper or cloth, on
which is spread tar mixed with oil
to prevent dying, OF. printers ink,
or even refuse sorghum, will act as
barriers and either prevent the insect
from crawling over, or it Will catch
and hold her, OF course, one must
lake precaution to stop all creyices
between the band and the bark. after
having first sseEaped an al lqess bark
) Hnere the band is placed. When the
!snaIss fed they eanR2t eyag |1p
the tree e deBSIlt thalf $1,000 g. Tsazzs!e
.sse Of the tree or On the weeds & near, !.
and when the young larvae emerge
they will try to. crawl up the tree, 4
and unless every minute creyice be-
tween the band and the tree be stop
ped, they will crawl through. OF
course, one must attend to the bands
properly and keep them covered with
fresh tar or other sticky substance,
The tin or cotton bands, of course,
need no sticky substance on them,
since &c they act as barriers by pre-
venting the insect from getting
foothold, or by becoming entangled
IN the cotton flbers. The bands must
be applied very early in the fall. and
kept there until late in the winter.
and again very early. in the spring
sdMEAQss even IN January-and not
removed until summer. =sfS1, 20 , :.
The best and most satisfactory
method, however, Of combating the
canker worm is by the use of paris
green. One pound OF paris green and i
three pounds Of lime in one hundred
and twenty-five gallons Of water
should be sprayed on to the apple
trees BY means OF a force pump ana
spray nozzle. This spraying should |
be done thoroughly and every part
well drenched. Care should be taken
to keep the liquid constantly stirring,
Hnte paris green does not dissolve In
water and settles quickly. BE sure
and purchase paris green that is pure.
Prof. Stedman. Missouri Agricultural
COLLEGE Columbia 41 No !.
i = one = -..s mort unpleasant common
-.useases Of the farm horse is known
las thrush Of the foot" and consists
ia q moist, fetid conaitton which fire.
uuently gives rise TO more & or less
lameness and always to a foul odor and
unhealthy state OF the frog, which is
liable TO become serious Il not attend
ed to properly and promptly.
On picking up the foot OF q. horse
suffering from this disease It will be
~ Se.r a