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Home Publications Tree Improvement and Genetics Southern Forest Tree Improvement Conference 10th Southern Forest Tree Improvement Conference (1969) Geographic Variation in Growth and Wood Quality of Loblolly Pine in North Carolina

Geographic Variation in Growth and Wood Quality of Loblolly Pine in North Carolina

Two studies of geographic variation in growth and wood quality of young loblolly pines in North Carolina have indicated that the overall performance of coastal seed sources has been superior to that of Piedmont, sandhills and fall line seed sources. Coastal sources produced up to 12 per cent greater heights and up to 30 per cent greater volumes and dry weights than other sources. Variation in wood specific gravity and moisture content was primarily associated with plantation location, with all sources exhibiting their highest specific gravities and lowest moisture contents in coastal plantations. In a comparison of loblolly with slash pine in coastal and fall line plantations, loblolly sources were from 21 to 35 per cent taller, produced from 12to 47 per cent greater volumes, and had from 7 to 38 per cent more dry weight than slash.


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Author(s): Clark W. Lantz, Julian G. Hofmann

Publication: Tree Improvement and Genetics - Southern Forest Tree Improvement Conference - 1969

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