Effects of lifting method, seedling size, and herbaceous weed control on first-year growth of loblolly pine seedlings

Reynolds, J.P.; Greene, T.A.; Britt, J.R.

General Technical Report Southern Research Station, USDA Forest Service (SRS-48): 51-54


Accession: 003742893

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In autumn 1999, an experiment was installed to measure the effects and interactions of lifting method, seedling size, and weed competition on growth of loblolly pine (Pinus taeda) seedlings during the first two growing seasons. Loblolly pine seedlings grown at two bed densities and lifted either by hand or machine were planted in southwestern Georgia (USA) and either given complete weed control or no weed control. The treatments were arranged in a 2x2x2 factorial and replicated three times. Mean root collar diameter was 5.7 mm for seedlings grown and 301/m2 and 7.6 mm for seedlings grown at 161/m2. Total height of all seedlings was measured after planting and at the end of the 1st growing season. Ground line diameter was also measured at the end of the first growing season. This paper presents the main effects and their interaction on height and volume after the first growing season.