n Southern African Forestry Journal - Effect of planting depth on growth of open-rooted Pinus elliottii and Pinus taeda seedlings in the United States : review paper
|Article Title||Effect of planting depth on growth of open-rooted Pinus elliottii and Pinus taeda seedlings in the United States : review paper|
|© Publisher:||South African Institute of Forestry (SAIF)|
|Journal||Southern African Forestry Journal|
|Author||Curtis L. VanderSchaaf and David B. South|
|Publication Date||Jul 2003|
|Pages||63 - 73|
|Keyword(s)||Pinus elliottii, Pinus taeda, Planting quality, Reforestation, Seedling quality and Survival|
Three studies in the Coastal Plain of Georgia were remeasured 7 or 8 years after planting to determine the effects of planting depth on field performance of open-rooted seedlings [root-collar diameter (RCD) ≥ 5 mm]. Average planting depth (i.e. shoot height before planting minus shoot height above ground after planting) for machine planted <i>P. elliottii</i> was 14 cm while hand-planted <i>P. taeda</i> seedlings averaged 9-11 cm deep. <i>P. taeda</i> showed no adverse effects on growth when planting seedlings up to 15 cm deep. Data for machine planted <i>P. elliottii</i> indicated that seedlings were planted 9 mm deeper on double-beds than on single-beds. Small-diameter pine seedlings (< 5 mm RCD) were not planted as deeply as seedlings with large diameters (RCD > 5 mm). For <i>P. elliottii</i> planted on double-beds, seedlings planted more than 15 cm deep had slightly smaller diameters at breast height than seedlings planted 10 cm deep. Although most tree planting guides recommend planting seedlings 7, 5 cm deep or less, many company plantations have been established by planting at greater depths.
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