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Microsite Soil Compaction Enhances Establishment of Direct-Seeded Jack Pine in Northwestern Ontario

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Abstract:

The effects of microsite soil compaction on direct seeding of jack pine and black spruce were tested in conjunction with Bracke scarification. The compaction effect was achieved by manually tamping the seed spot. It was anticipated that compaction might decrease the number of seeds required to establish seedlings and extend the sowing season in Northwestern Ontario Experimental results showed that compaction increased the number of scalps stocked with jack pine by 30% after the first growing season. Compaction with a pyramidal surface doubled the percent stocked scalps over conventional sowing for the latest sowing date. Compaction may allow an extension of the jack pine sowing season from late June into early July. Still, early spring sowing provided the best overall results for both species. Compaction effects were not detected for black spruce. The experimental sowing rate of five seeds per scalp may have been insufficient to detect black spruce treatment responses on the dry mineral soil seed spots. North. J. Appl. For. 9(3):107-112.

Document Type: Journal Article

Affiliations: School of Forestry, Lakehead University, Thunder Bay, Ontario, Canada P7B 5E1

Publication date: 1992-09-01

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  • Each regional journal of applied forestry focuses on research, practice, and techniques targeted to foresters and allied professionals in specific regions of the United States and Canada. The Northern Journal of Applied Forestry covers northeastern, midwestern, and boreal forests in the United States and Canada.
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