Résumé :
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In the late 1980s, a region-wide network of operational herbicide monitoring sites was installed in the Prince George Forest Region to study the impacts of vegetation control treatments on trees and vegetation communities. This extension note reports the 10-year post-treatment results of the study site near Tsilcoh River (Aspen Block) in the Fort St.James Forest District. The purpose of remeasuring this trial was: - to assess the long-term effects of a glyphosate treatment on growth of white spruce, - to document the number of well-spaced and free-growing spruce 14 years after planting, - to assess the impacts of glyphosate treatment on the development of the vegetation community, and - to assess the impact of glyphosate treatment on mixed-stand timber yield. The study site is classified as the Stuart variant, Dry Warm subzone of the Sub-Boreal Spruce biogeoclimatic zone (sbsdw3) (DeLong et al. 1993).
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