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Old 02-04-2009, 11:22 PM   #1
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Default Landscape-scale Treatment Promising For Slowing Beetle Spread

Landscape-scale Treatment Promising For Slowing Beetle Spread
ScienceDaily (Feb. 2, 2009)

http://www.sciencedaily.com/releases/2009/02/090202175109.htm
Quote:
Mountain pine beetles devastating lodgepole pine stands across the West might best be kept in check with aerial application of flakes containing a natural substance used in herbal teas that the insects release to avoid overcrowding host trees, according to a team of scientists.

Findings from the U.S. Forest Service-funded study appear in the February issue of Forest Ecology and Management. The study was conducted in California and Idaho, and showed how applications of laminated flakes containing a substance called verbenone resulted in a three-fold reduction in insect attack rates, compared to areas where they were not applied.
The technique could provide a way to treat infestations on a large scale and limit further spread into millions of acres of trees made vulnerable because of climate change, overcrowding and fires.

It could also be an alternative to insecticides, which can have adverse environmental effects. Thinning of some overstocked forests is still recommended to reduce susceptibility to bark beetles. But, the flakes can provide some protection for the dense, old-growth stands required by wildlife, according to the scientists.
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Old 02-05-2009, 11:28 AM   #2
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I went looking for more info on this method and discovered this interesting blurb.
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At this time verbenone is not registered for commercial use. It should be registered for commercial use by the EPA some time next spring. Verbenone is registered for experimental use. If you are interested in attending a training workshop in your state or if you are aware of SPB infestations that may be suitable for the verbenone suppression tactic
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