Survival and Growth of Loblolly Pine as Influenced By Seedling Grade: 13-Year Results
Abstract:Results from a northcentral Louisiana loblolly pine (Pinus taeda) site (site index 94, base age 25) showed that seedling grade affected survival, height, and volume production. Survival of Grade 1 seedlings was significantly greater than cull seedlings and volume production from Grade 1 seedlings was 17.5% greater than that of Grade 2 seedlings. The present value of the additional wood produced at age 13 by Grade 1 seedlings (over that of Grade 2 seedlings) ranged from $50 to $139 per thousand seedlings. Average volume production for Grade 1 seedlings exceeded 30 m³/ha/yr (440 cubic feet per acre per year). To increase volume production, especially on high site land, Grade 1 seedlings should be planted. It is proposed that a portion of the nursery be sown at low densities (ca 200/m²) to provide the field forester with the option of planting a high proportion of Grade 1 seedlings.¹
Document Type: Journal Article
Affiliations: Nursery superintendent, Continental Forest Industries, Hodge, Louisiana 71247
Publication date: May 1, 1985
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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 Southern Journal of Applied Forestry covers an area from Virginia and Kentucky south to as far west as Oklahoma and east Texas.
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