Forest Sciences Commons^™

Localization Of Expansin Expression During Adventitious And Lateral Rooting In Response To Auxin In Loblolly Pine, Fuyu Xu

Electronic Theses and Dissertations

Loblolly Pine is the most important and widely cultivated timber species in the southern United States. Due to its fast growth, it is extensively planted for lumber and pulpwood. Vegetative propagation will enhance gains from genetic improvement of tree species. Rooted-cutting is at present the most reliable non-somatic embryogenesis method for cloning specific genotypes. However, an abrupt decline of adventitious rooting capacity has hindered the application of vegetative propagation in loblolly pine. Unraveling the rooting mechanism may facilitate a way to overcome this barrier. Regulation of lateral and adventitious root formation by auxin has been demonstrated through the application of …

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.

Financial Analysis Of Pruning Combined With Low Density Management Of Southern Yellow Pine In East Texas: An Assessment, Jayson F. Tate, A. Gordon Holley, Leslie A. Dale, Gary D. Kronrad

Faculty Publications

Time study was conducted on pruning of research plots in a IZyear-old loblolly pine (Pinus taeda) plantation thinned to 58 square feet basal area (190 trees) per acre. Pruning times with labor and equipment costs were used to determine per acre and per tree pruning costs. Pruning costs were used to find values necessary to break-even on a pruning investment. Soil expectation value (SEV) calculations were used to compare profitability of management utilizing heavy thinning with pruning to traditional management regimes. Calculations were performed using a current hourly wage of $8.00, stumpage price of $400.00, per thousand board feet (MBF) …

Four-Year Growth Results From 16 Year Old Intensively Managed Low Density Loblolly Pine Plantations, A. Gordon Holley, Leslie A. Dale, Gary D. Kronrad

Faculty Publications

In 1994 eighty four permanent research plots were established in two twelve year-old loblolly pine (Pinus taeda) plantations in East Texas. Plots differed in relation to: soil-site type, density of trees per acre, fertilization treatments, and competing vegetation control. Three levels of thinning treatments reduced the basal areas to 36,60, and 84 square feet of basal area (approximately 100,200, and 300 stems, respectively) per acre. All residual trees were pruned to a height of 25 feet. Plots were re-measured in 1995, 1996, and 1998. Significant differences in diameter and height growth rates were detected in 1996 and 1998. Average diameter …

Herbicide And Fertilizer Combinations For Newly Planted Loblolly Pine Seedlings On A Flatwoods Site In Southeastern Arkansas: Year Three Results, Jimmie L. Yeiser

Faculty Publications

Herbicide and fertilizer combinations were tested for enhanced loblolly pine (Pinus taeda L.) seedling performance on a chemically prepared, flatwoods site in southeastern AR. Fertilizer treatments were selected combinations of 40,50, and 50 pounds per acre of elemental N, P, or K, respectively. Arsenal+Oust (4 ounces+2 ounces per treated acre) was applied for herbaceous weed control (HWC). One treatment of herbicide or herbicide+ fertilizer was applied per year; the same rate was used for years one (1996) and two (1997). After three growing seasons, the greatest seedling volume resulted from two treatments of HWC+NPK fertilizer. Two treatments of HWC alone …

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.

Changes In Small Mammal Community Attributes Associated With Increasing Pine Stand Age In Managed Pine Plantations In Southeastern Virginia, James Douglas Dolan

Biological Sciences Theses & Dissertations

Loblolly pine plantations were examined at different ages to identify small mammal community attributes in relation to the succession of the plant community. Forest floor and understory plant communities were characterized. Small mammals were collected by Fitch (live) traps and pitfall traps in four age classes during five seasons of study. Fitch live traps and pitfall traps were used in conjunction with one another to obtain the most accurate depiction of the small mammal community. Fitch traps accounted for 65 % of small mammal captures and 7 of 9 species captured. Small mammal abundance and biomass declined with increasing stand …

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. 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. 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. 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. 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 …

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.

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.