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    Development of longleaf (Pinus palustris Mill.) and loblolly (P. taeda L.) pine seediings growing under three light conditions--full sunlight, 30% shade, and 50% shade--was evaluated. Although there was little difference between development of seedlings in 30% and 50% shade, those grown is full sunlight were signiticantly larger than shaded seedlings in diameter and in top and root dry weight after 20 weeks. Longleaf pine responded better than loblolly pine in both root and shoot growth under full sunlight. The greatest response to higher levels of light was in root growth. These results have major applications to the culture of longleaf pine seedlings in containers.

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    Barnett, James P. 1989. Shading reduces growth of longleaf and loblolly pine seedlings in containers. Tree Planters'' Notes. 40:23-26

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