nd
burning it with the branches or as fuel.
5. So far as combating the beetle is concerned it is unnecessary
and a waste of time to dispose of trees or branches which have been
dead 12 months or more, because the broods of the destructive
beetle are not to be found in such trees.
6. Spraying the tops or branches or the application of any
substance as a preventive is not to be recommended. Nothing will
save a tree after the main trunk is attacked by large numbers of
this beetle or after the bark and foliage begin to die.
7. The injuries to the twigs by this beetle do not require
treatment.
8. The bark and wood of dying and dead trees are almost invariably
infested with many kinds of bark and wood-boring insects which can
do no harm to living trees. Therefore all efforts should be
concentrated on the disposal of the broods of the hickory
barkbeetle, according to the above recommendations.
In order to insure the protection of the remaining living trees it
is very important that at least a large majority of the dead
infested and partially dead infested trees found within an entire
community of several square miles be disposed of within a single
season to kill the broods of this beetle. Therefore there should be
concerted action by all owners of hickory trees.
On account of the value of the hickory for shade and nuts and for
many commercial wood products it is important that the people of a
community, county or state who are in any manner interested in the
protection of this class of trees, should give encouragement and
support to any concerted or cooperative effort on the part of the
owners towards the proper control of the hickory bark beetle.
The following is an extract from a letter from Dr. Felt to Mr. Merkel:
"Replying to yours of the 11th inst. I would state that Chapter 798 of
the Laws of 1911, a copy of which is enclosed herewith, is, in my
estimation, sufficiently comprehensive to include such an insect as the
hickory bark borer."
"It is certainly extremely unfortunate that trees past hope and infested
by thousands of insects liable to destroy those in the vicinity, should
be left standing through the winter and the pests allowed to mature and
continue their nefarious work, especially as they could be checked at a
comparatively slight expense and by the adopt
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