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Title: Effects of genetics, management intensity, and seedling density on early stocking in loblolly pine

Author: Roberts, Scott D.; Rousseau, Randall J.; Herrin, B. Landis;

Date: 2015

Source: In Proceedings of the 17th biennial southern silvicultural research conference. e–Gen. Tech. Rep. SRS–203. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station. 6 p.

Publication Series: Proceedings - Paper (PR-P)

   Note: This article is part of a larger document. View the larger document

Description: Rapid establishment and early tree growth can be key factors in successful plantation management. This generally entails planting good quality planting stock at a seedling density appropriate for the management objectives and then managing at an appropriate intensity with a goal of fully occupying the site as quickly as possible within the context of those objectives. We established a study to examine the performance of two varietal lines of loblolly pine (Pinus taeda L.) planted at three spacings and managed at two levels of intensity. After five growing seasons, management intensity and genetic variety were both significantly affecting tree height and diameter growth. This has resulted in significant differences in stocking, with relative density (%SDImax) ranging from 4 to 31 percent. Initial tree spacing has yet to begin affecting individual tree growth, but higher relative densities in the tighter spacing suggest that these plots will soon start experiencing the effects of inter-tree competition. Robinson, C.; Duinker, P.N.; Beazley, K.F. 2010. A conceptual framework for understanding, assessing, and mitigating ecological effects of forest roads. Environmental Reviews. 18: 61-86.

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Roberts, Scott D.; Rousseau, Randall J.; Herrin, B. Landis 2015. Effects of genetics, management intensity, and seedling density on early stocking in loblolly pine. In Proceedings of the 17th biennial southern silvicultural research conference. e–Gen. Tech. Rep. SRS–203. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station. 6 p.

 


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