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Project Report No. 69, Observed Growth And Yield Of Loblolly And Slash Pine Plantations In East Texas, Dean W. Coble, Katherine Pendergast

Informal Project Reports

Forestland in East Texas is an estimated 12.1 million acres, with approximately 2.9 million acres (24%) classified as pine plantations on private land. Because pine plantations are typically managed for timber production, information regarding tree growth is needed to make informed management decisions. An understanding of how growth factors such as tree volume, diameter, height and basal area are affected by site index, trees per acre and age in East Texas enables plantation managers to make the management decisions necessary to maximize timber production.

Project Report No. 68, Observed Growth And Yield Of Loblolly Pine Plantations In East Texas, Dean W. Coble, Katherine Pendergast

Informal Project Reports

Forestland in east Texas occupies about 12.1 million acres with 2.9 million acres (24%) classified as pine plantations on private land. Pine plantations are typically managed to produce timber, so information is needed to make informed management decisions. Growth is one piece of information that managers often rely upon in their decision making process.

Project Report No. 67, A Whole-Stand Growth And Yield Model For Unmanaged Loblolly And Slash Pine Plantations In East Texas, Dean W. Coble, Micky G. Allen Ii, Jimmie L. Yeiser, I-Kuai Hung

Informal Project Reports

The amount of forestland in east Texas has been estimated at 11.8 million acres, with approximately 2.5 million acres classified as pine plantations. The majority of these plantations are owned by forest industry (71 percent), while non-industrial private forest landowners represent the next largest shareholder (23 percent). Pine plantations are typically managed to produce timber, so information is needed to make informed management decisions. Growth is one piece of information that managers often rely upon in their decision-making process.

The purpose of this paper is to develop an updated whole-stand growth and yield model for unmanaged loblolly and slash pine …

Project Report No. 66, Metric Volume And Biomass Prediction Equations For Loblolly And Slash Pine Trees Planted In Unmanaged Pine Plantations In East Texas, Dean W. Coble, Young-Jin Lee, J. David Lenhart

Informal Project Reports

Metric equations are presented to predict the volume of wood and/or biomass contained in individual loblolly (Pinus taeda, L.) and slash (Pinus elliottii, Englem.) pine trees growing in unmanaged pine plantations in east Texas. Taper equations are also presented for both species that describe tree form in metric units.

Project Report No. 65, Stumpage Price Trends Of Sawtimber And Pulpwood In East Texas And Louisiana, Dean W. Coble, Shiaolin Cheng

Informal Project Reports

A fifteen-year stumpage price update and analysis for pine and hardwood in East Texas are reported. Thepricesofsawtimberandpulpwoodare presented for both pine and hardwood plantations by using 1988 to 2003 stumpage prices from the Texas Forest Service and Louisiana Department of Agriculture. Timber prices increased steadily from 1988 to the late 1990's, peaked, then declined into 2003 for both Louisiana and Texas. Louisiana prices, though, have remained higher than those for Texas.

Project Report No. 64, Observed Growth And Yield Of Loblolly And Slash Pine Plantations In East Texas, Dean W. Coble, Shiaolin Cheng

Informal Project Reports

The amount of forestland in east Texas has been estimated at 11.8 million acres, with approximately 2.5 million acres classified as pine plantations. The majority ofthese plantations are owned by forest industry (71 percent), while non-industrial private forest landowners represent the next largest shareholder (23 percent). Pine plantations are typically managed to produce timber, so information is needed to make informed management decisions. Growth is one piece of information that managers often rely upon in their decision-making process.

Project Report No. 63, Site Index Equations For Loblolly And Slash Pine Plantations In East Texas, Update: Fall 2000, Lanton Chumley, Kenneth Dotson, Brad Horn, Greg Kelley, Greg Mabus, Meredith Middlebrook, Jamie Oliver, Michael Russell, Michelle Stegall

Informal Project Reports

This update utilizes height-age pairs measured from 1982- 1999. As a result, the number.of observations available for analysis is 1,900 loblolly and 852 slash. It is anticipated that the equations in this Fall 2000 update may quantify the productivity of East Texas loblolly and slash pine plantations in a more accurate and reliable manner than the eight previous sets of equations.

Project Report No. 62, Site Index Equations For Loblolly And Slash Pine Plantations In East Texas, Update: Fall 1998, Jermey Abston, Jason Bledsoe, Tyson Davis, Cody Duncan, Jason Guinn, Steven Hilton, Gwen Jones, Jennifer Jones, Jeff Kellam, Bryan Killburn, Denver Knox, William Muncrief, Jason Nelms, Chris Pool, Will Ramey, Keith Rice, Kevin Roberts, Curtis Stanford

Informal Project Reports

This update utilizes height-age pairs measured from 1982 - 1998. As a result, the number of observations available for analysis is 1,814 loblolly and 788 slash. It is anticipated that the equations in this Fall 1998 update may quantify the productivity of East Texas loblolly and slash pine plantations in a more accurate and reliable manner than the seven previous sets of equations.

Project Report No. 61, Observed Per-Acre Basal Area Growth Trends, 28 Individual Observations, Unthinned Loblolly Pine Plantations, Andrew M. Burrow

Informal Project Reports

Individual plot data from the East Texas Pine Plantation Research Project were available for analysis in this study. Each plot consists of two subplots. Each subplot is considered an observation. The analysis was limited to individual observations ages 24 years and older. All observations are unthinned.

Project Report No. 60, Observed Per-Acre Volume Growth Trends, 28 Individual Observations, Unthinned Loblolly Pine Plantations East Texas, Andrew M. Burrow

Informal Project Reports

Individual plot data from the East Texas Pine Plantation Research Project were available for analysis in this study. Each plot consists of two subplots. Each subplot is considered an observation. The analysis was limited to individual observations ages 24 years and older. All observations are unthinned.

For each observation, cubic feet total stem wood and bark per acre was calculated.

Based on these values, MAI (mean annual increment) was calculated.

The values (plus observed trees per acre) are depicted in graphs on the next 28 pages.

Project Report No. 59, Site Index Equations For Loblolly And Slash Pine Plantations In East Texas, Update: Fall 1997, Bryce Burke, Andy Burrow, Bob David, Jennifer Franke, John Hamilton, Jay Hein, Roger Hooper, Krissy Kimbro, Jeffrey Lester, Willie Newman, Doug Orms, Ann Pennell, Wiley Quarles, Joel Rudolph, Mike Sessions, Brandon White, Chris Wray

Informal Project Reports

Each published set of equations was developed from analyses of East Texas Pine Plantation Research Project (ETPPRP) data collected from the array of ETPPRP permanent research plots located throughout East Texas.

Project Report No. 57, Observed Growth Trends, Quadratic Mean Diameter, Loblolly And Slash Pine Plantations East Texas, J. David Lenhart, Jennifer Allen, Young-Jin Lee

Informal Project Reports

No abstract provided.

Project Report No. 56, Observed Growth Trends, Basal Area Per Acre In Square Feet, Loblolly And Slash Pine Plantations East Texas, J. David Lenhart, Jennifer Allen, Young-Jin Lee

Informal Project Reports

Observations fr9m the East Texas Pine Plantation Research Project were available for analysis in this study. We limdted the observations to site index classes 60. 70 and 80 feet. And age classes were set at three-year intervals.

Por each combination of site index and age class. an average observed basal area in square feet per acre was calculated.

Based on these values, HAl (mean annual increment) and CAl (current annual increment) were calculated.

The values are depicted in graphs on the next six pages.

Project Report No. 58, Observed Growth Trends, Average Total Height . . . Ten Tallest Trees, Loblolly And Slash Pine Plantations East Texas, J. David Lenhart, Jennifer Allen, Young-Jin Lee

Informal Project Reports

Observations from the East Texas Pine Plantation Research Project were available for analysis in this study. We limdted the observations to site index classes 60, 70 and 80 feet. And age classes were set at three-year intervals.

For each combination of site index and age class, an average observed total height of the ten tallest trees was calculated.

Based on these values, MAl (mean annual increment) and CAI (current annual increment) were calculated.

The values are depicted in graphs on the next six pages.

Project Report No. 54, Assessment Of Early Estimation Of Site Index, Loblolly Pine Plantations East Texas, J. David Lenhart, Jennifer Allen

Informal Project Reports

Observations from the Bast Texas Pine Plantation Research Project were available for analysis in this study.

In particular, observations are available that track the development of loblolly pine plantation parameters, such as age and height during 14, 15 and 16 year periods of time.

Fortunately. many of the tracks begin with initial measurements in plantations that were less than 5 years old.

These particular data were analyzed in this study. The results are depicted on the next 6 pages.

Project Report No. 53, Slash Pine Plantations In East Texas, Comparison Of Two Harvest Schedules . . ., J. David Lenhart, Jennifer Allen

Informal Project Reports

Pine report discussing and treating various topics within the discipline.

Project Report No. 51, Slash Pine Plantations In East Texas, Thinned And Unthinned - Total Wood Flow Comparison, A Simulation, J. David Lenhart, Jennifer Allen

Informal Project Reports

Report of a simulation model for the timing of thinning plantation management schedules.

Project Report No. 52, Location, Loblolly Pine, J. David Lenhart, Jennifer Allen

Informal Project Reports

Discussion of location in respect to the Loblolly Pine.

Project Report No. 50, Site Index Equations For Loblolly And Slash Pine Plantations In East Texas, Update: Fall 1996, Chris Bergt, Chris Edmonson, Jason Gibson, Robert Hactel, John Hamilton, Michael Hasagama, Justin Jordan, David Leary, Clif Motheral, Nathan Smith, Jason Wallace, Steven Wright

Informal Project Reports

Site index prediction equations for loblolly ( Pinus taeda L.) and slash ( Pinus elliottii Engelm. ) pine plantations in East Texas.

Project Report No. 46, Loblolly Pine Plantations In East Texas Two Harvest Schedules No Thinning & Final Harvest At 25 Years Thin At 10 Years & Final Harvest At 25 Years Sawlog/Veneer Wood Flow Comparison, A Simulation, J. David Lenhart, Jennifer Allen

Informal Project Reports

DOES A THINNING AT 10 YEARS WITH FINAL HARVEST AT 25 YEARS INCREASE SAWLOG/VENEER 1000 FLOW? DOES A THINNING AT 10 YEARS WITH FINAL HARVEST AT 25 YEARS INCREASE NET PRESENT VALUE?

Project Report No. 49, Loblolly Pine Plantations In East Texas Two Harvest Schedules No Thinning, Final Harvest At 30 Years Thin At 20 Years, Final Harvest At 30 Years Sawlog/Veneer Wood Flow Comparison, A Simulation, J. David Lenhart, Jennifer Allen

Informal Project Reports

A two-page spreadsheet was designed to represent the simulation model. In the spreadsheet, the user can easily conduct simulation runs. Runs that ascertain the effect of different combinations of biological and economical factors. Sensitivity of wood flow and net present value to plantation management attributes. A forester can use the spreadsheet to investigate specific combinations of factors. This spreadsheet is a versatile analytical tool for comparing management scenarios.

Project Report No. 48, Loblolly Pine Plantations In East Texas Two Harvest Schedules No Thinning & Final Harvest At 30 Years, Thin At 15 Years & Final Harvest At 30 Years, Sawlog/Veneer Wood Flow Comparison, A Simulation, J. David Lenhart, Jennifer Allen

Informal Project Reports

DOES A THINNING AT 15 YEARS WITH FINAL HARVEST AT 30 YEARS INCREASE SAWLOG/VENEER WOOD FLOW? DOES A THINNING AT 15 YEARS WITH FINAL HARVEST AT 30 YEARS INCREASE NET PRESENT VALUE?

Project Report No. 47, Loblolly Pine Plantations In East Texas Two Harvest Schedules, No Thinning, Final Harvest At 25 Years Thin At 15 Years Final Harvest At 25 Years Sawlog/Veneer Wood Flow Comparison, A Simulation, J. David Lenhart, Jennifer Allen

Informal Project Reports

DOES A THINNING AT IS YEARS WITH FINAL HARVEST AT 25 YEARS INCREASE SAWLOG/VENEER WOOD FLOW? DOES A THINNING AT IS YEARS WITH FINAL HARVEST AT 25 YEARS INCREASE NET PRESENT VALUE?

Project Report No. 45, Loblolly Pine Plantations In East Texas Thinned And Unthinned - Total Wood Flow Comparison A Simulation, J. David Lenhart, Curtis Vanderschaaf

Informal Project Reports

In East Texas loblolly pine plantations, is the total wood flow from a thinning and a final harvest greater than total wood flow from just a final harvest? That is, does including one thinning in the rotation have an advantage over no thinning in the production of wood during the rotation?

Project Report No. 42, High/Low Counties, Curtis Vanderschaaf, J. David Lenhart

Informal Project Reports

Which East Texas counties tend to have the highest and lowest values of certain pine plantation attributes?

Loblolly and Slash pine plantation attributes considered are:
• Ability of area to grow pine plantations •
• Percent of pines with crooked stems •
• Pecent of pines with stem fusiform rust •
• Visual quality •

Project Report No. 43, Site Index Equations For Loblolly And Slash Pine Plantations In East Texas, Update: 1996, Don Campbell, Steve Croft, Mark Dougharty, Doug Foster, John Hawkins, William Howard, Young Jin Lee, Jason Love, Derek Mckean, Kendall Watts, Kurtis White

Informal Project Reports

In this update, after combining the data from the two subplots comprising each ETPPRP plot, the number of age-height pairs available for this analysis is 1,520 loblolly and 658 slash. the It is anticipated that the equations in this :996 update may productivity of East Texas loblolly and slash pine plantations quantify in a more accurate and reliable manner than the four previous sets 0: equations.

Project Report No. 41, Perils Facing Etpprp Plots, 1982-1995, J. David Lenhart

Informal Project Reports

A total at 256 permanent growth and yield research plots were installed by the college of Forestry at Stephen P. Austin State University in pine plantations throughout Bast Texas during 1982-84. of the total number, 178 were installed in loblolly (Pinus t.ede L.), and 78 were placed in slash (P!nu. elliotti! Bngelm.) pine plantationa. The purpose of the plots is to provide data for the East Texas Pine Plantation Research Project (ETPPRP).

Project Report No. 40, Influence Of Plantation Variables On Crown Height, Young-Jin Lee, J. David Lenhart

Informal Project Reports

A plantation management question ... Is it possible to estimate the distance from the ground to the first live branch of a planted pine tree? The Bast Texas Pine Plantation Research Project (ETPPRP) in a recent investigation addressed this question, and the answer was yes. An analysis of the ETPPRP data set produced equations to estimate crown height (the distance from the ground to the first live branch).

Project Report No. 38, Average Observed Fusiform Rust Transition Paths, O. Schabenberger, T. G. Greroire, J. David Lenhart

Informal Project Reports

fusiform rust ( Cronatrium quercuum [Berk. ] Miyabe ex Shirai f . sp . tusiforme L. ) is a devastating disease in loblolly ( Pinus taeda L. ) and slash ( Pinus elliottii Englem. ) pine plantations throughout the southern United States . Pine stems infected with fusiform rust are subject to hazards such as wind breakage, and if a pine stem with a gall on it does survive to harvest, utilization of the infected stem piece may be down-graded from possible lumber to probable pulpwood or maybe completely discarded .

Research Report No. 37, Site Index Equations For Loblolly And Slash Pine Plantations In East Texas, Update : 1995, Glen Dirksmeyer, Kelly Scott, Curtis Vanderschaaf, Raymond Worthy

Informal Project Reports

Site index prediction equations for loblolly ( Pinus caeda L. ) and slash ( Pinws elliottii Engelm. ) pine plantations in Ease Texas have been previously developed and published by: -

Lenhart , J. D., E. V. Hunt, Jr. and J. A. Blacka7d. 1986. Site index equations for loblolly and slash pine 1 plantations on non-old- field in East Texas. South. J. I Appl. For. 10(2) :109-112.

Vaughn, A. B., J. Lapongan and J. D. Lenhart. 1993. Site index equations for loblolly and slash pine plantations in East Texas - Update: 1993. ETPPRP Report 27. College of Forestry. SFASU. 6 …