Forest Sciences Commons^™

Research Report No. 35, Pine And Hardwood Stumpage Price Trends For Lumber/Plywood ... Chip-N-Saw ... Pulpwood Timber In East Texas And Louisiana Through 1994, Kelly B. Scott, J. David Lenhart

Informal Project Reports

Past performance of timber stumpage prices can be informative:

• Develop reasons for past t rends.

• Provide basis for prognostications as to future trends.

Research Report No. 34, Influence Of Soil And Topography Features On Ability Of Land In East Texas To Grow Loblolly And Slash Pine Plantations, H. Alexis Ross, Andrew J. Londo, J. David Lenhart

Informal Project Reports

This research paper is specifically designed to assist East Texas agricultural landowners by attempting to provide some of the lnformation that may be needed for decisions concerning whether or not to establish. grow and harvest pine trees. Specifically, it provides information that may be useful to ascertain the ability of land In East Texas to produce planted loblolly ( Anus taeda L)and slash ( Pinus elliottii Engelm. ) pine trees Irrespective of present land use.

Research Report No. 36, Yield Prediction Spreadsheets Written In Lotus 1-2-3 ™ For Pcs And Excel™ For Macintoshes, Matthew W. Mcbroom, J. David Lenhart

Informal Project Reports

Recently developed stand-level yield prediction functions for loblolly and slash pine plantations in East Texas have been incorporated Into computerized spreadsheets.

Research Report No. 33, Climate And Growth, Christopher C. Brown, Hershel C. Reeves, J. David Lenhart

Informal Project Reports

Growth of loblolly pine (Pinus taeda L.) plantations in East Texas is influenced by many factors - soil, genetics , insects, diseases, associated vegetation and climate - to list a few items. Insights into the role that these factors contribute to the production of wood might assist East Texas plantation managers in establishing, growing and harvesting planted trees.

Project Report No. 39, Observed Average Characteristics Of Unthinned Loblolly And Slash Pine Plantations In East Texas, Kelly B. Scott, J. David Lenhart

Informal Project Reports

In September, 1994, the ETPP'RP1 published Report 31 (Observed growth rates of loblolly and slash pine plantations in East Texas). The purpose of that report was to tabulate four observed average annual growth rates: • Quadratic mean diameter, • Stand height, • Basal area per acre and • Cubic feet per acre of unthinned East Texas loblolly and slash pine plantations.

Research Report No. 32, Trends Of Non-Straight Tree Stems In Loblolly And Slash Pine Plantations In East Texas, 1985-1994, H. Alexis Ross, J. David Lenhart

Informal Project Reports

Trees from East Texas loblolly ( Pinus taeda L. ) and slash ( Pinus effiottii Engelm. ) pine plantations are one of the sources of raw material for conversion into products such as paper, veneer and lumber by East Texas forest product mills. The utilization of the planted trees may depend on various biological and economical factors. Factors such as tree size, tree condition, stumpage prices and interest rates can play a role in the merchandizing process.

One of the factors, tree condition, may be affected by tree crown position in canopy, incidence of disease, single stem and straightness of …

Research Report No. 31, Observed Growth Rates Of Loblolly And Slash Pine Plantations In East Texas, H. Alexis Ross, J. David Lenhart

Informal Project Reports

Of the approximately 11.2 million acres of forest in East Texas, about 2.5 million acres have been planted with loblolly pine trees ( Pinus taeda L. ) and 500,000 acres with slash pine trees ( Pinus elliottii Engelm. ). These plantations are owned by public, industrial and non-industrial private entities with industrial ownership dominating. Even though most pine plantations in East Texas are relatively young (20 years or less), plantation information is needed for management decision-making.

Research Report No. 30, A Guide For Timing Initial Tree Harvests In East Texas Loblolly And Slash Pine Plantations, J. David Lenhart, H. Alexis Ross

Informal Project Reports

In East Texas, there are approximately 3 million acres of loblolly ( Pinus taeda L. ) and slash ( Pinus elliottii Engelm. ) pine plantations. Most of these plantations, which represent about 25% of the forested area of East Texas, have been planted since 1970.

As these planted trees age, East Texas foresters may be considering initial timber harvesting decisions for unthinned plantations. Often the timing of the harvests can be determined by considering combinations of economic and non-economic values, utilization standards and timber growth' factors. However, in some situations, it may be appropriate to ascertain the proper timing by …

Research Report No. 29, Site Index Equations For Loblolly And Slash Pine Plantations In East Texas, Update: 1994, Jason Black, Chad Holton, Billy Johnson, Jennifer Key, Mark Kotal, Daryl Lawerence, Jon Mastin, Jack Ridinger, Janet Russell

Informal Project Reports

In 1986, equations to estimate site index in loblolly and slash pine plantations in East Texas were published (Lenhart et al. 1986). Subsequently, updated site index prediction equations were published in 1993 (Vaughn et al. 1993). Both sets of equations were developed using data collected from East Texas Pine Plantation Research Project (ETPPRP) permanent plots distributed throughout East Texas. The site index prediction equations were designed to estimate tree height 25 years from planting, ie., index age = 25 years.

Data for the 1986 and 1993 site index prediction equations were from measurements of the ETPPRP permanent plots during 19182-1984 …

Research Report No. 28, Tree Content And Taper Functions For Planted Loblolly And Slash Pine Trees In East Texas, Update: June 1993, Revised: September 1993, Jaffirin Lapongan, A. Beth Vaughn, J. David Lenhart

Informal Project Reports

In 1987, tree content and tree taper functions for individual live standing planted loblolly and slash pine trees in East Texas were published 1. These equations were developed based on stem analyses of felled trees located adjacent to East Texas Pine Plantation Research Project (ETPPRP) permanent plots throughout East Texas. The 1987 report was based on 65 loblolly and 34 slash pine trees sampled during 1986. For both species, dbh (0) values ranged from about 2-12 inches and total height (H) values varied from about 10-60 feet.

Research Report No. 27, Site Index Equations For Loblolly And Slash Pine Plantations In East Texas, Update: 1993, A. Beth Vaughn, Jaffirin Lapongan, J. David Lenhart

Informal Project Reports

In 1986, equations to estimate site index in loblolly and slash pine plantations in East Texas were published. These equations were developed using data collected from East Texas Pine Plantation Research Project (ETPPRP) permanent plots distributed throughout East Texas. The site index prediction equations were designed to estimate tree height 25 years from planting, ie., index age = 25 years.

In the 1986 study, only data recorded during the first measurement cycle of the ETPPRP (1982- 1984) were available for analysis. Pairs of observed plantation age and a'verage !otal height of the ten tallest trees values were accessible from 150 …

Research Report No. 26, Hyperstand 2.0: Estimating Yield Of East Texas Pine Plantations (Update To Hyperstand 1.0), A. Gordon Holley, Eric L. Taylor

Informal Project Reports

An update to a computer program for estimating per acre yield for lob lolly .pine ( Pinus taeda L. ) and slash pine ( Pinus elliotti Engelm. ) plantations in East Texas is presented. The program, HYPERSTAND 2.0, was written utilizing HYPERCARD and is designed to run on MACINTOSH personal computers. In order to run, HYPERSTAND 2.0 requires the application program HYPERCARD 1.2.2 and HYPERCARD HOME STACK.

Research Report No. 25, Frmps: A Forest Resource Management Planning Simulator For East Texas Pine Plantations, Tom Hartz

Informal Project Reports

FRMPS is designed to provide a landowner an opportunity to simulate the establishing, growing and harvesting of lob lolly pine ( Pinus taeda L.) and slash pine ( Plnus elltotti Engelm. ) plantations in East Texas. Also included in the model is a procedure to s1mulate the growing of an existing non-plantation with a future conversion to ptne plantet1on. The effect of different cash flows from various activities and operations is analyzed using net present value as the decision-making criterion. FRMPS runs on a Macintosh SE or 11 personal computer and requires STELLA FOR BUSINESS v. 2. 1 software.

Research Report No. 24, Hyperstand 1.0: A Hypercard Computer Program For Estimating Yield Of East Texas Pine Plantations, Eric L. Taylor, A. Gordon Holley

Informal Project Reports

A computer program for estimating per ~e yield for lob lolly and slash pine plantations in East Texas is presented. The program, HYPERSTAND 1.0, is written in HYPERCA.RD and 1s designed to run on MACINTOSH computers. In order to run, HYPERSTAND requires the application program HYPERCA.RD l .2.

Research Report No. 23, Environmental Factors Influencing Diameter Development Within East Texas Loblolly Pine Plantations, Pilis Malim

Informal Project Reports

An assessment of the role of various environmental fa::tors on the development of four measures of diameter--minimum, arithmetic mean, quadratic mean and maximum- -was conducted for lob lolly pine ( Pinus taeda L.) plantations in East Texas. Of 12 environmental f~tors analyzed, only slope percent, two measures of non- planted vegetation Md surface soil pH significantly influenced diameter development.

Research Report No. 22, A Computer Program In Basic For Estimating Yield Of East Texas Pine Plantations, Terry L. Hackett, Tom M. Hartz

Informal Project Reports

A computer program for estimating per acre yield for lob lolly and slash pine plantations in East Texas ls presented. The program, DIADISD.BAS, ls written in BASIC and is designed to run on IBM (and compatible) PC computers. An option in DIADISD.BAS allows the user to impose mortality rates on the pine plantations for both fusiform rust infected tree stems Md disease-free stems.

Research Report No. 21, A Fortran Computer Program For Estimating Yield Of East Texas Pine Plantations, J. David Lenhart

Informal Project Reports

A computer program for estimating per acre yield for loblolly and slash pine plantations In East Texas ls presented. The interactive program, DIAYLDSUR. is written in FORTRAN and ls resigned to run on a main-frame computer. An option in DIAYLDSUR allows the user to Impose mortality rates on the pine plantations for both fusiform rust infected tree stems and disease- free stems.

Research Report No. 20, Stumpage Price Trends Of Pine Sawtimber And Pulpwood In East Texas, Update: 1977-1987, J. David Lenhart, Kent T. Adair

Informal Project Reports

An update of past stumpage price performance for East Texas pine sawtimber and pulpwood is presented, using information from Texas Forest Service 1983-87 and Timber Mart-South 1977-87. In ~ltlon. information from the Louisiana Department of Agriculture on stumpage price trends in Louisiana between 1955-87 is described. Two Prognostications on future stumpage price trends are included.

Research Report No. 19, Estimating Survival For East Texas Pine Plantations, J. David Lenhart, Terry L. Hackett

Informal Project Reports

Equations to estimate the expected number of trees per acre at future points within a rotation are presented for planted lob lolly pine ( Pinus taeda L. ) and slash pine ( Pinus elliottii Engelm ) trees on non-old-fields in East Texas. Separate functions are presented for fusiform rust infected trees and uninfected trees.

Research Report No. 18, Fusiform Rust Occurrence In East Texas Pine Plantations, 1969-1987, J. David Lenhart, Terry L. Hackett

Informal Project Reports

Information from five surveys of slash pine ( Pinus ellioitti Engelm. ) and loblolly ( Pinus taeda L. ) pine plantations in East Texas between 1969 and 1987 indicated that infection rates for fusiform rust ( Cranatlium quercuum (Berle) Miyabe ex Shirai f. sp. fusiforme) have increased to about 50~ for slash pine and are continuing to increase for loblolly pine to current levels of 10- I 5:t.

Research Report No. 17, Stand Structure And Yield Of Slash Pine Plantations In East Texas, Update: 1987, J. David Lenhart

Informal Project Reports

An updated diameter distribution yield prediction system is Presented for slash pine ( Pinus elliottii Engelm. ) plantations on non-old-fields in East Texas. The new revised system was developed using data from initial measurement ( 1982- 84) and first remeasurement ( 1985-87) of the East Texas Pine Plan tat ion Research Project permanent Plots.

Research Report No. 16, Stand Structure And Yield Of Loblolly Pine Plantations In East Texas, Update: 1987, J. David Lenhart

Informal Project Reports

An updated diameter distribution yield prediction system is presented for loblolly pine ( Pinus taeda L. ) plantations on non- old-fields in East Texas. The new revised system was developed using data from initial measurement ( 1982-84) and f irst remeasurement ( 1985-87) of the East Texas Pine Plan tat ion Research Project permanent plots.

Research Project No. 15, Predicting Individual Tree Height Of Planted Loblolly And Slash Pines In East Texas, Update: 1987, Cheryl R. Dixon

Informal Project Reports

Updated equations to estimate individual total tree height of loblolly pine ( Pinus taeda L. ) and slash pine ( Pinus elliottii Engelm. ) trees planted on non-old-fields in East Texas are presented. The new revised equations were developed using data from initial measurement and first remeasurement of the East Texas Pine Plantation Research Project Permanent plots ( 1982-1987).

Research Reports No. 14, Stumpage Price Trends Of Pine Sawtimber And Pulpwood In East Texas, 1977-1986, J. David Lenhart, Kent T. Adair

Informal Project Reports

Three different records of past stumpage price performance for Pine sawtimber and pulpwood are presented: Texas Forest Service 1983-86, Timber Mart South l 977-86 and Louisiana Departrnent of Agriculture 1955-86. The first two represent standing timber prices in East Texas, and the latter represents prices over a 32 year period in an adjacent state. In addition, a prognostication on future stumpage price trends is included.

Research Report No. 13, Estimating Dry Weight Of Understory Woody Plants In East Texas, Hershel C. Reeves, J. David Lenhart

Informal Project Reports

Equations are presented to estimate the total aboveground ovendry Weight of 19 different species of small woody plants common to understory of East Texas forests. For each of the 19 species, the predicting variable is basal diameter.

Research Report No. 12, Stand Structure And Yield Of Slash Pine Plantations On Non-Old-Fields In East Texas, J. David Lenhart

Informal Project Reports

A diameter distribution yield prediction system is presented for slash Pine ( Pinus elliottii Engelm.) plantations on non-old-fields in East Texas. The system was developed using data from the initial rneasurement of the ETPPRP permanent plots in slash pine plantations.

Research Project No. 11, Stand Structure And Yield Of Loblolly Pine Plantations On Non-Old-Fields In East Texas, J. David Lenhart

Informal Project Reports

A diameter distribution yield prediction system is presented for loblolly pine ( pinus taeda L.) plantations on non-old-fields in East Texas. The system was developed using data from the initial measurement of the ETPPRP permanent plots in loblolly pine plantations.

Research Project No. 7, Estimating The Dry Weight Of Individual Loblolly Pine Trees Planted In East Texas, Thomas J. Wiswell, Jock A. Blackard, J. David Lenhart

Informal Project Reports

Equations are presented to estimate the dry weight in pounds or the wood in the stem and branches of individual loblolly pine trees Planted on site-prepared land in East Texas.

Research Project No. 8, Estimating The Cubic Foot Volume Of Individual Slash Pine Trees Planted In East Texas, Terry L. Hackett

Informal Project Reports

Equations are presented to estimate the cubic foot content of the wood and berk in tile stern and branches of individual slash pine trees Planted on site-prepared land in East Texas. Taper functions are also developed.

Research Project No. 9, Estimating The Green Weight Of Individual Slash Pine Trees Planted In East Texas, Charlie J. Laman

Informal Project Reports

Equations are presented to estimate the green weight in pounds of the wood, bark and needles in the stern and branches of individual slash pine trees planted on site-prepared lend in East Texas.