Sowing Method and Seed Treatment Effects on Jack Pine Direct Seeding
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.
No Supplementary Data
No Article Media
Document Type: Journal Article
Affiliations: KBM Forestry Consultants Inc., 360 Mooney Street, Thunder Bay, Ontario P7B 5R4
Publication date: 01 December 1988