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Full-Text Articles in Life Sciences
Tip Moth Control And Loblolly Pine Growth In Intensive Pine Culture: Four Year Results, David Kulhavy, Jimmie L. Yeiser, L. Allen Smith
Tip Moth Control And Loblolly Pine Growth In Intensive Pine Culture: Four Year Results, David Kulhavy, Jimmie L. Yeiser, L. Allen Smith
Faculty Publications
Twenty-two treatments replicated four times were applied to planted loblolly pine, Pinus taeda L., on bedded industrial forest land in east Texas for measurement of growth impact of Nantucket pine tip moth (NPTM), Rhyacionia frustrana Comstock, and effects on pine growth over 2 years. Treatments were combinations of Velpar®, Oust®, Escort®, and Arsenal® herbicides; and diammonium phosphate (DAP) fertilizer with treatments in 2000, in 2001, or in both years. Ten of the treatments were treated with Mimic timed with pheromone traps to reduce NPTM infestations. NPTM was controlled with the Mimic, and there was a small but significant increase in …
Use Of A Generalized Sigmoid Growth Function To Predict Site Index For Unmanaged Loblolly And Slash Pine Plantations In East Texas, Dean W. Coble, Young-Jin Lee
Use Of A Generalized Sigmoid Growth Function To Predict Site Index For Unmanaged Loblolly And Slash Pine Plantations In East Texas, Dean W. Coble, Young-Jin Lee
Faculty Publications
A generalized sigmoid growth function was used in this study to model site index (SI) for unmanaged or lowintensity managed loblolly pine (Pinus taeda, L.) and slash pine (Pinus elliottii, Engelm.) plantations in east Texas. Schnute's growth function was fit to 11 ,367 and 5,040 height-age observations of loblolly and slash pine, respectively. These data were collected over a 20-year period from unmanaged pine plantations located across the east Texas region as a part of the East Texas Pine Plantation Research Project (ETPPRP). The fit model was used to derive Sl equations (25-year index age). The Sl equations apply to …