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Pine Beetle Treatments
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radiation treatment is an environmentally safe way to kill
Mountain pine beetles. Beetle infested trees should be felled in
June and bucked into four foot length for easy handling and laid
on the ground in an open area where the sun can heat up the bark.
Rotate the logs 1/3 of turn, once every week before beetle
emergence begins in late July. Our research results indicated that
this method has resulted in better than 95% beetle mortality. |
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| Field
tests of insecticides in 1982 determined that spraying green high
value trees with 2% emulsion of carbaryl, as Union Carbide
Sevimol-4 to thirty feet can protect the tree from beetle attacks
(these were the results of research only, and mention of a
proprietary product or pesticide does not constitute an
endorsement or recommendation by the USDA). New insecticides are
now being tested that will produce comparable results at less cost
to the consumer. |
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| Even-aged
stands with an average diameter greater than 8 inches d.b.h. and
growing stock level (GSL) of more than 150 sq. ft. per acre are
considered highly susceptible to mountain pine beetle attacks.
Thinning the stands to a 100 basal foot per acre or less can
increase protection against beetle attacks. |
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