Webster's practical forestry : $b A popular handbook on the rearing and growth of trees for profit or ornamentWebster, Angus D.
Science
Webster's practical forestry : $b A popular handbook on the rearing and growth of trees for profit or ornament
Webster, Angus D.
Forests and forestry -- Great Britain; Trees -- Great Britain
dry, short-grained, and by no means comparable with that of healthy
specimens. From whatever cause, the presence of the insect in our
plantations is much to be deplored, and already many fine old trees
in different parts of the country have succumbed to the attack. It is
a curious fact that certain trees fall victims to the attack of this
insect very rapidly, often in the short space of two years, while
others of equal age and vigour, and, as far as can be seen, similarly
situated, live for many years. Fully grown trees are, in my opinion,
more liable to be killed quickly than younger specimens.
As regards remedies, these can only conveniently be applied to
single specimens and are scarcely practicable on a large scale. That
success has, however, attended the application of certain remedies I
am quite convinced, for several valuable ornamental trees on a lawn
in Buckinghamshire that were badly affected by the pest are now,
twelve months after being treated, quite free from the insect, and do
not appear to have suffered in consequence. In this case the remedy
was simple, and consisted merely in scrubbing the tree stems where
affected with a stiff brush dipped in an emulsion of soft soap, this
being rubbed well into all crevices of the bark. Only one application
was given, but as the trees were nearly 100 ft. high with many large
limbs, which also showed the presence of the coccus, the work took a
considerable time. However, the results well repaid the expense of
labour. Another excellent remedy is to mix together equal portions of
paraffin and soft soap, and when required for use add twenty times
their bulk of hot water, stirring all well together. This may be
applied either with a scrubbing brush or syringed on to the affected
parts. Other measures of a more drastic nature have been found to
be beneficial, but those given are probably the simplest and best.
Three or four handfuls of lime to a bucket of water is an excellent
application, the only drawback being the unpleasant colour imparted to
the trees. This is a simple remedy, and may be applied with a painter’s
or scrubbing brush. It has saved many trees on an estate near London.
Public-domain text, read in full here on John Shaqi.
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