Early Growth Enhancement Increases Loblolly Pine Rotation Yields
Abstract:Long-term impact of early pine growth enhancement on plantation development through rotation ages of 20, 25, and 30 was studied. A fumigation study planted at 1210 trees/ac showed that age 6 diameter and height growth on methyl bromide treated plots exceeded the other two treatments by 0.9 in. and 4.5 ft. Data collected between ages 6 and 30 were used to analyze the effect of the early growth response on plantation development. Early growth enhancement accelerated plantation development by 3 years with total wood yield being increased by 500, 640, and 660 ft³ per acre at ages 20, 25, and 30, respectively. Since high stocking density and rapid early growth had a negative impact on final wood yields, the influence of early stocking control measures was evaluated using a growth and yield simulator. Pine stocking levels for each treatment were reduced by thinning at age 14 to 400 TPA or by planting 600 TPA. Lower stocking levels increased yield differences 32%. Long-term benefits of early growth enhancement were optimized at lower pine stocking rates. South. J. Appl. For. 13(2):94-99.
Document Type: Journal Article
Affiliations: Hill Farm Research Station, Louisiana Agricultural Research Station, LSU Agricultural Center, Rte. 1, Box 10, Homer, LA 71040
Publication date: May 1, 1989
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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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