ISSN:
1573-5095
Keywords:
thinning
;
planting density
;
diameter growth
;
crop tree
;
volume growth
;
sawtimber yields
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Abstract Five stocking levels of 2,471, 1,483, 741, 494, and 247 trees/ha (TPH) were established to study competition among young loblolly pine (Pinus taeda). Growth comparisons were made between pairs of adjacent densities, which had measurement trees of similar characteristics but had differing stocking densities. Measurable competition, inferred by reduction in diameter increment, began shortly after age 6 at 2,471 TPH, at approximately age 7 at 1,483 TPH, age 8 at 741 TPH, and age 9 at 494 TPH. By age 21, total merchantable volume was the same for all density levels, (209 m3/ha) but sawtimber volume was inversely related to density level. Competitive growth pressures exerted by the higher stand densities through age 21 affected crop tree growth between ages 21 and 31. Although densities were thinned at ages 21 and 26, crop tree growth on the 2,471, 1,483, and 741 TPH densities was less than the 494 and 247 TPH densities.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00025368
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