Biological control of exotic bark beetles

Reay, Stephen; Brownbridge, Michael
August 2007
New Zealand Tree Grower;Aug2007, Vol. 28 Issue 3, p24
The article focuses on the pine bark beetle, Hylastes ater. Beetles emerging from infested stumps from spring onwards will feed on seedlings and high levels of seedling mortality can occur when sites are re-planted during the winter following harvest. Research has shown that Hylastes can transport sapstain fungi to live seedlings during feeding. Currently, site management is said to be the only option for minimizing effects of Hylastes on regenerative plantings. This involves delaying planting at high risk sites for up to 18 months following harvesting.


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