Survival and Juvenile Growth of Loblolly and a Pitch x Loblolly Pine Hybrid in West-Central Arkansas
2013
Burner, David M.
Few studies have compared loblolly pine (Pinus taeda L.) and pitch (P. rigida Mill.) x loblolly pine hybrid (P. x rigitaeda Kartesz & Gandhi) in the west-central United States. The objective of this study was to compare planting survival and juvenile growth of loblolly pine and P. x rigitaeda on two soils near Booneville, Arkansas. Survival was associated with site and species, with most mortality occurring by 2 years postplanting. Loblolly pine had significantly greater survival (94%) than did P. x rigitaeda (82%). Loblolly pine also had greater height, dbh, basal area, and number of superior (top 25%) genotypes at 7 years postplanting for either dbh (≥14.0 cm) or height (≥6.6 m) than did P. x rigitaeda. Growth responses between species could become more evident as the stand matures, especially when influenced by ice-loading events.
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