scholarly journals Compatible Cubic-Foot Stem Volume and Upper-Stem Diameter Equations for Semi-intensive Plantation Grown Loblolly Pine Trees in East Texas

2006 ◽  
Vol 30 (3) ◽  
pp. 132-141 ◽  
Author(s):  
Dean W. Coble ◽  
Keith Hilpp
Keyword(s):  
Loblolly Pine ◽  
Slash Pine ◽  
Stem Diameter ◽  
Stem Volume ◽  
East Texas ◽  
Old Field ◽  
Gulf Region ◽  
The West ◽  
Mechanical Site Preparation ◽  
Pine Trees

Abstract The Max-Burkhart taper equation was used to develop compatible taper and volume equations for semi-intensive plantation grown loblolly pine (Pinus taeda L.) trees in East Texas. Semi-intensive plantations in East Texas are characterized by some form of mechanical site preparation,a burn, possibly chemical weed control, improved seedlings if planted after 1985, and, possibly, a midrotation thinning and/or fertilization. The equations in this study were compared with those of Lenhart et al. [Lenhart, J.D., T.L. Hackett, C.J. Laman, T.J. Wiswell, and J.A. Blackard.1987. Tree content and taper functions for loblolly and slash pine trees planted on non-old field in east Texas. South J. Appl. For. 10(2)109–112.] and Baldwin and Feduccia [Baldwin, V.C. Jr., and D.P. Feduccia. 1991. Compatible tree-volume and upper-stem diameter equationsfor loblolly and slash pines in the West Gulf Region. South. J. Appl. For. 10(2)109–112.] using independent data. The new equations ranked first (sum of ranks = 9) in terms of percent bias and percent SEE for inside-bark predictions of upper-stem diameters and cubic-footvolumes, while the Lenhart et al. [Lenhart, J.D., T.L. Hackett, C.J. Laman, T.J. Wiswell, and J.A. Blackard. 1987. Tree content and taper functions for loblolly and slash pine trees planted on non-old field in east Texas. South J. Appl. For. 10(2)109–112.] ranked second (sumof ranks = 17) and Baldwin and Feduccia [Baldwin, V.C. Jr., and D.P. Feduccia. 1991. Compatible tree-volume and upper-stem diameter equations for loblolly and slash pines in the West Gulf Region. South. J. Appl. For. 10(2)109–112.] ranked third (sum of ranks =22). For outside-bark predictions of volumes and diameters, Baldwin and Feduccia [Baldwin, V.C. Jr., and D.P. Feduccia. 1991. Compatible tree-volume and upper-stem diameter equations for loblolly and slash pines in the West Gulf Region. South. J. Appl. For. 10(2)109–112.] rankedfirst (sum of ranks = 12), while the new equations ranked a close second (sum of ranks = 13) and Lenhart et al. [Lenhart, J.D., T.L. Hackett, C.J. Laman, T.J. Wiswell, and J.A. Blackard. 1987. Tree content and taper functions for loblolly and slash pine trees planted onnon-old field in east Texas. South J. Appl. For. 10(2)109–112.] ranked third (sum of ranks = 20). We recommend using the new equations for loblolly pine trees up to a 16-in. dbh and provide examples to illustrate their use. South. J. Appl.For. 30(3):142–146.

Compatible Tree-volume and Upper-Stem Diameter Equations for Plantation Loblolly Pines in the West Gulf Region

1991 ◽  
Vol 15 (2) ◽  
pp. 92-97 ◽  
Author(s):  
V. C. Baldwin ◽  
D. P. Feduccia
Keyword(s):  
Loblolly Pine ◽  
Stem Diameter ◽  
Simultaneous Estimation ◽  
Parameter Estimates ◽  
Model Formulation ◽  
Gulf Region ◽  
The West ◽  
Loblolly Pines ◽  
Gulf States ◽  
Pinus Taeda L

Abstract Equations are presented for predicting inside bark (ib) or outside bark (ob) cubic-foot volume to any ob diameter limit, or the ib or ob diameter at any given height, of loblolly pine tress (Pinus taeda L.) growing in thinned or unthinned plantations in the West Gulf States region. The model formulation and simultaneous estimation technique utilized ensure that the volume and stem profile equations are compatible and the parameter estimates are statistically efficient. The 230 sample trees used to develop the equations were from central Louisiana plantations and ranged in diameters at breast height (D) from 1.3 to 20.8 in. in total height (H) from 16 to 96 ft, and in ages from 9 to 55 yr. Significant differences in stem profile between trees of the same D and H in unthinned and thinned plantations suggest that separate cubic-foot volume and upper-stem diameter prediction equations should be used South J. Appl. For. 15(2):92-97

Green and Dry-Weight Equations for Above-ground Components of Planted Loblolly Pine Trees in the West Gulf Region

1987 ◽  
Vol 11 (4) ◽  
pp. 212-218 ◽  
Author(s):  
V. C. Baldwin
Keyword(s):  
Pinus Taeda ◽  
Loblolly Pine ◽  
Weight Ratio ◽  
Dry Weight ◽  
Prediction Equations ◽  
Gulf Region ◽  
The West ◽  
Biomass Equations ◽  
Pine Trees ◽  
Pinus Taeda L

Abstract Prediction equations based on 130 sample trees from thinned and unthinned loblolly pine (Pinus taeda L.) plantations in central Louisiana are presented for the green and dry weights of aboveground tree components. Sample trees ranged from 2 to 21 in. dbh, 18 to 94 ft in height and from 9 to 55 yr in age. Significant differences in partial stem weight between trees from thinned and unthinned stands required development of separate sets of weight ratio equations. The range of the studies' observations increases the predictive applicability of planted loblolly pine biomass equations. South. J. Appl. For. 11(4):212-218.

scholarly journals Tree Content and Taper Functions for Loblolly and Slash Pine Trees Planted on Non-Old-Fields in East Texas

1987 ◽  
Vol 11 (3) ◽  
pp. 147-151 ◽  
Author(s):  
J. David Lenhart ◽  
Terry L. Hackett ◽  
Charlie J. Laman ◽  
Thomas J. Wiswell ◽  
Jock A. Blackard
Keyword(s):  
Pinus Taeda ◽  
Loblolly Pine ◽  
Slash Pine ◽  
Old Fields ◽  
East Texas ◽  
Stem Taper ◽  
Pine Trees ◽  
Pinus Taeda L

Abstract Equations are presented to estimate total or partial stem content in cubic feet and pounds (green or dry) for loblolly pine (Pinus taeda L.) and slash pine (Pinus elliotti Engelm.) trees planted on non-old-fields in East Texas. Equations are included to estimate the content of the completetree (stem and branches). In addition, a set of compatible stem taper functions are described. South. J. Appl. For. 11(3):147-151.

scholarly journals A Mixed-Effects Height—Diameter Model for Individual Loblolly and Slash Pine Trees in East Texas

2011 ◽  
Vol 35 (1) ◽  
pp. 12-17 ◽  
Author(s):  
Dean W. Coble ◽  
Young-Jin Lee
Keyword(s):  
Loblolly Pine ◽  
Model Fitting ◽  
Pinus Elliottii ◽  
Ordinary Least Squares ◽  
Mixed Effects ◽  
Slash Pine ◽  
Permanent Plots ◽  
East Texas ◽  
Individual Tree ◽  
Pine Trees

Abstract A new mixed-effects model was developed that predicts individual-tree total height for loblolly (Pinus taeda) and slash pine (Pinus elliottii) as a function of individual-tree diameter (in.), dominant height (ft), quadratic mean diameter (in.), and maximum stand diameter (in.). Data from 119,983 loblolly pine and 42,697 slash pine height–diameter observations collected on 185 loblolly pine and 84 slash pine permanent plots located in plantations throughout East Texas were used for model fitting. This new model is an improvement over earlier models fit with ordinary least squares, in that it can be calibrated to a new stand with observed height–diameter pairs, thus improving height prediction. An example is provided that describes how to calibrate the model to a new stand with observed data.

scholarly journals Fusiform Rust Trends in East Texas: 1969-1987

1988 ◽  
Vol 12 (4) ◽  
pp. 259-261 ◽  
Author(s):  
J. David Lenhart ◽  
W. Thomas McGrath ◽  
Terry L. Hackett
Keyword(s):  
Pinus Taeda ◽  
Loblolly Pine ◽  
Pinus Elliottii ◽  
Slash Pine ◽  
Pine Plantations ◽  
East Texas ◽  
Infection Rates ◽  
Fusiform Rust ◽  
Cronartium Quercuum ◽  
Pinus Taeda L

Abstract Five surveys of pine plantations in East Texas over an 18-year period (1969-1987) indicated that fusiform rust (Cronartium quercuum [Berk.] Miyabe ex Shirai f. sp. fusiforme Birdsall and Snow) infection rates have increased to current levels of about 50% on slash pine (Pinus elliottii Engelm.) and are continuing to increase on loblolly pine (Pinus taeda L.) to 10-15% levels. South. J. Appl. For. 12(4):259-261.

scholarly journals Site Index Equations for Loblolly and Slash Pine Plantations on Non-Old-Fields in East Texas

1986 ◽  
Vol 10 (2) ◽  
pp. 109-112 ◽  
Author(s):  
J. David Lenhart ◽  
Ellis V. Hunt ◽  
Jock A. Blackard
Keyword(s):  
Loblolly Pine ◽  
Pinus Elliottii ◽  
Growth Function ◽  
Site Index ◽  
Slash Pine ◽  
Old Fields ◽  
East Texas ◽  
Height Prediction ◽  
Index Index ◽  
Pinus Taeda L

Abstract Equations to estimate site index (index age 25 years) for plantations of loblolly pine (Pinus taeda L.) and slash pine (Pinus elliottii Engelm.) on non-old-fields in East Texas have been developed. The height-prediction curves were based on the Richards' growth function and track well within the range of the data (1-17 years). South. J. Appl. For. 10:109-112, May 1986.

scholarly journals A New Whole-Stand Model for Unmanaged Loblolly and Slash Pine Plantations in East Texas

2009 ◽  
Vol 33 (2) ◽  
pp. 69-76 ◽  
Author(s):  
Dean W. Coble
Keyword(s):  
Loblolly Pine ◽  
Basal Area ◽  
Pinus Elliottii ◽  
Current Data ◽  
Slash Pine ◽  
Pine Plantations ◽  
Growth And Yield ◽  
East Texas ◽  
Age Classes ◽  
Yield Model

Abstract A new compatible whole-stand growth-and-yield model to predict total tree cubic-foot volume per acre yield (outside and inside bark) was developed for unmanaged loblolly pine (Pinus taeda) and slash pine (Pinus elliottii) plantations in East Texas. This model was compared with the noncompatible whole-stand model of Lenhart (<xref ref-type="bibr" rid="B15-2127">Lenhart, 1996</xref>, Total and partial stand-level yield prediction for loblolly and slash pine plantations in east Texas, South. J. Appl. For. 20(1):36–41) and the <xref ref-type="bibr" rid="B15-2127">Lenhart (1996)</xref> model refit to current data. For the two species, all three models were evaluated with independent observed data. The model developed in this study outperformed both Lenhart models in prediction of future yield and basal area per acre for all age classes combined and by 5-year age classes. The Lenhart models consistently overestimated yield and basal area per acre. All three models predicted surviving trees per acre similarly. An example is also provided to show users how to use the new whole-stand model.

scholarly journals Susceptibility of parent and interspecific F1 hybrid pine trees to tip moth damage in a coastal North Carolina planting

2001 ◽  
Vol 31 (5) ◽  
pp. 919-923 ◽  
Author(s):  
Maxine T Highsmith ◽  
John Frampton ◽  
David O'Malley ◽  
James Richmond ◽  
Martesa Webb
Keyword(s):  
North Carolina ◽  
Loblolly Pine ◽  
Dominant Mode ◽  
Slash Pine ◽  
F1 Hybrids ◽  
F1 Hybrid ◽  
Pine Trees ◽  
Rhyacionia Frustrana ◽  
Hybrid Pine ◽  
Pinus Taeda L

Tip moth damage among families of parent pine species and their interspecific F1 hybrids was quantitatively assessed in a coastal planting in North Carolina. Three slash pine (Pinus elliotti var. elliotti Engelm.), two loblolly pine (Pinus taeda L.), and four interspecific F1 hybrid pine families were used. The F1 hybrids were as susceptible to damage by Nantucket pine tip moth (Rhyacionia frustrana (Comst.)), as was their susceptible loblolly pine parent. Their phenotypes support a dominant or partially dominant mode of inheritance for susceptibility. The phenotype of one slash pine family was not statistically different from the phenotypes of the loblolly and F1 hybrid pines. The high susceptibility of that one slash pine family appeared to be intrinsic, even though slash pine is considered resistant to tip moth damage. Tip moth damage on the two other slash pine families was significantly lower.

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