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Sowing Method and Seed Treatment Effects on Jack Pine Direct Seeding

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Jack pine seed from local seed sources received six treatment combinations by Hilleshog AB of Sweden as follows: (1) control, no treatment, (2) pelleting, (3) coloring, (4) pelleting and coloring, (5) coloring and scenting, and (6) pelleting, coloring and scenting. Laboratory tests performed by Hilleshog AB, a Swedish agriculture seed treating company that pelleted the test seed, showed pelleting to slow the rate of germination, but germination capacity was greater than 90% after 21 days for all treatments. Treated seed were factorially combined with hand and mechanical sowing methods with Bracke scarification in May 1984 on a sandy jack pine site west of Thunder Bay. Another treatment consisted of manually made pyramidal impressions from a corrugated pallet, which compacted the upper-mid-slope region of the scalp. This treatment, randomized within the 2 x 6 factorial design was then hand sown with untreated seed. Percentage of stocked scalps 2 months after germination showed hand sowing to be superior to machine sowing (45% vs 36%). Hand-sown untreated seed performed slightly better than treated seed (58% vs 32%-49%), but differences between seed treatments were not significant when sown by machine. Best results were obtained from untreated seed sown onto the upper slope of a Bracke scalp stabilized by the corrugated pallet (79%). Microsite stabilization appears critical for successful stocking of jack pine and merits further study toward scarification machinery modification. North. J. Appl. For. 5:237-240, December 1988.

Document Type: Journal Article

Affiliations: KBM Forestry Consultants Inc., 360 Mooney Street, Thunder Bay, Ontario P7B 5R4

Publication date: December 1, 1988

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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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