||Forest Investment Account (FIA) - Land Base Investment Program|
|FIA Project 9088005
||Are MPB killed pines less efffective repositories of Armillaria root disease inoculum|
|Project lead: British Columbia Timber Sales|
|Contributing Authors: Schellenberg, Bruce; Chapman, Bill K.|
|Subject: Forest Investment Account (FIA) - Land Base Investment Program|
|Series: Forest Investment Account (FIA) - Land Base Investment Program|
|As a continuation of the ringbarking trial process described in the "Hen Ingram Armillaria Trial Establishment Report|
”, March 2009, the ringbarked trees which had been hand-girdled in November of 2008 were stubbed by a handfaller along with the control trees in October of 2009. Felled trees were slashed by the faller to improve access for planting and for hazard abatement. Of the original 43 ringbarked trees and 43 control trees, 1 control tree and 2 ringbarked trees were blown down over the past year, 1 ringbarked tree had a broken top with only insect frass under the bark and no cambium to sample. The roots on one of the windfelled control trees were desiccated with bark peeled off and we couldn’t find any intact roots in the ground so this tree also wasn’t sampled. Three small ringbarked balsam and spruce had died due to sun exposure from a very hot summer but the roots were still suitable for sampling. In the plots in general, balsam and spruce mortality were high from exposure; and cedar was also affected with heavy flagging in exposed trees. Except for the cases noted above, all root cambiums were sampled for fungal DNA extraction. All trial trees were stubbed.
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