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Thinning balsam fir thickets with soil sterilants

Informally Refereed
Download (PDF 1.02 MB): https://research.fs.usda.gov/download/treesearch/13743.pdf

Abstract

Under certain conditions that we do not yet fully understand, balsam fir has a tendency to form dense thickets that cause stagnation of growth. This condition is common throughout the spruce-fir region, and it presents the landowner with one of his most perplexing management problems. A typical thicket averaging 15 feet tall may contain 5,000 to 10,000 stems per acre (fig. 1). Small areas may have densities up to 30,000 stems per acre.

Citation

Hart, Arthur C. 1961. Thinning balsam fir thickets with soil sterilants. Station Paper NE-152. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 1-8