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Newton, M.

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Background, Aim and Scope:: Large-scale deforestation is occurring in subarctic North America following clearing by salvage logging or insect attack, numerous shrubs, herbs and deciduous tree species tend to dominate areas on which stands of white spruce have grown. In the absence of economically advantageous mechanical methods, several herbicides have value in efforts to reforest by planting white spruce. Glyphosate, imazapyr, triclopyr and hexazinone are all capable of selectively removing many competing species, but there is concern about whether they would degrade naturally or persist owing to the frigid climate. Materials and Methods: We established test plots with all four herbicides in upland and riverbottom...
Background, Aim and Scope:: Large-scale deforestation is occurring in subarctic North America following clearing by salvage logging or insect attack, numerous shrubs, herbs and deciduous tree species tend to dominate areas on which stands of white spruce have grown. In the absence of economically advantageous mechanical methods, several herbicides have value in efforts to reforest by planting white spruce. Glyphosate, imazapyr, triclopyr and hexazinone are all capable of selectively removing many competing species, but there is concern about whether they would degrade naturally or persist owing to the frigid climate. Materials and Methods: We established test plots with all four herbicides in upland and riverbottom...
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