Northern red oak planting trials were established in three clearcuts in Pennsylvania to evaluate field performance in relation to type of planting stock (1-0, 2-0, 1-1, 2-1, containerized direct-seeded) and other treatments (undercutting in the nursery, top-clipping at planting time, hormone treatment of roots). All treatments were planted simultaneously, and most employed the same genetic material. After 3 yr in the field, seedlings that had been grown for 2 yr in 7.9-1 pots were tallest and had the best survival, but this stock was expensive to produce and difficult to plant. The 2-0 bareroot stock performed best among remaining treatments, especially if the seedlings had been undercut in the nursery. Undercutting was not beneficial to the performance of 1-0 seedlings. Top-clipping and a hormone treatment had little effect on performance. Seedlings from direct-seeding were as tall as those from 1-0 stock. The advantage of 2-0 stock over 1-0 stock was partly, but not entirely, attributable to its larger size. North. J. Appl. For. 10(3):105-111.
Document Type: Journal Article
Forest Resources Laboratory, School of Forest Resources, The Pennsylvania State University, University Park, PA 16802
Publication date: September 1, 1993
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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.