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Home → Publications → Tree Improvement and Genetics → Southern Forest Tree Improvement Conference → 12th Southern Forest Tree Improvement Conference (1973) → Comparisons Within and Between Populations of Planted Slash and Loblolly Pine: A Seed Source Study

Comparisons Within and Between Populations of Planted Slash and Loblolly Pine: A Seed Source Study

Six slash pine seed sources and six loblolly pine seed sources were planted at eight planting locations in the Atlantic Coastal Plain and Piedmont of Florida, Georgia, and South Carolina in 1958-59. Loblolly pine was significantly more productive than slash pine, producing 61-49% more volume and 54-46% more weight of wood than slash pine. The species did not differ in percent fusiform rust infection, but slash pine was higher than loblolly pine in measures related to severity of infection. Slash pine was higher in unextracted wood specific gravity than loblolly pine. Differences in height were not significant, but loblolly was larger in diameter and had higher survival than slash pine. Differences among seed sources were generally minor in both species.


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Author(s): Donald E. Cole

Publication: Tree Improvement and Genetics - Southern Forest Tree Improvement Conference - 1973