Scientific American Supplement, No. 433, April 19, 1884Various
Science
Scientific American Supplement, No. 433, April 19, 1884
Various
Science -- Periodicals
We have yet another insect to contend with
which infests the apple and pear, commonly called the Coddling Moth,
and the larva, the apple-worm (_Garpocapsa pomonella_). The loss by the
ravaaes of this insect alone to the fruit growers of the United States
fan hardly be estimated, as in many cases the whole crop is rendered
worthless. Such a vast destruction of two of the most valuable fruits
the world produces should stimulate scientists in this age of progress
to discover an effectual remedy against such a gigantic evil.
I have never yet discovered nor tried an effectual remedy against this
insect. The nearest I have approached his extermination is in the
following manner: After it has entered the fruit and accomplished its
damage, the time arrives when it has to leave the fruit and hide itself
in a quiet, secure position to undergo the transition from the larva to
the pupa state, which requires, in the early part of the season, eight
or ten days; after this time the miller is hatched and is again ready to
besiege the fruit with its sting. The insect, being two-brooded in this
climate at least, if not disturbed, has an aggregating force to do
mischief the second time. The progeny for the succeeding year have alone
to depend on the security of this second generation of larvæ. As they
may often be found in bark of apple trees during winter, my plan of
destruction is, about the first of July to take woolen rags long enough
to wrap around the trees, and say four inches wide. Each week I look
over the trees, and destroy the worms secreted under the rags and
wherever I find them until the fruit is off the trees. I have all the
green fruit, of every kind, carefully picked up as soon as it falls,
thereby destroying many of the curculio as well as the apple-worms.
One word upon the grape--the insect part of the question. The
_Phylloxera vastatrix_, or grape-vine louse, is already at work on Long
Island. It is found very difficult to raise many of our fine, new grapes
with us in consequence of the depredations of this very minute insect,
it being almost too small to be seen by the naked eye. There has lately
been discovered a remedy which is entirely chemical and as yet but
little disseminated. Very soon, no doubt, a discovery will be made that
will stay the progress of this destructive enemy.
We should plant aplenty of cherry and small fruit trees to yield feed
for birds. In return they will assist us in our efforts to preserve a
bountiful supply of this health producing element.
* * * * *
COARSE FOOD FOR PIGS.
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