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Articles 1 - 13 of 13
Full-Text Articles in Life Sciences
Clonal Selection Of Sugar Cane For Texas And Louisiana From A Common Germplasm Pool, Stephen Kresovich, Richard D. Breaux
Clonal Selection Of Sugar Cane For Texas And Louisiana From A Common Germplasm Pool, Stephen Kresovich, Richard D. Breaux
Faculty Publications
The sugar cane (a complex hybrid of Saccharum spp.) cultivar improvement program for the irrigated Lower Rio Grande Valley of Texas, initiated in 1961, has expanded greatly over the past 20 years. Initially, only 8 to 12 cultivars, selected from those previously released from commercial production in Louisiana or Florida, were screened annually for their production potential in the Lower Rio Grande Valley. The current introduction and screening program is more comprehensive utilizing 1) all clones advanced from the first to the second line trials at the U. S. Sugarcane Laboratory at Houma, Louisiana; 2) the advanced "CP" assignments from …
Microbial Degradation Of The Leachable And Lignocellulosic Components Of Leaves And Wood From Rhizophora Mangle In A Tropical Mangrove Swamp, Ronald Benner, Robert E. Hodson
Microbial Degradation Of The Leachable And Lignocellulosic Components Of Leaves And Wood From Rhizophora Mangle In A Tropical Mangrove Swamp, Ronald Benner, Robert E. Hodson
Faculty Publications
Preparations of uniformly [14C] labeled mangrove leaves and specifically radiolabeled [14C-lignin] lignocelluloses and [14C -polysaccharide]lignocelluloses from mangrove leaves and wood were used in experiments to determine the microbial rates of mineralization of the leachable and lignocellulosic components of mangrove detritus in aerobic and anaerobic sediments of a tropical mangrove swamp. The bulk of the leachable fraction from mangrove leaves was mineralized relatively rapidly and was assimilated into microbial biomass with high efficiency (30 %). In contrast, rates of mineralization of the lignocellulosic component of mangrove leaves and wood were 10fold lower than mineralization rates …
Maximizing Expected Profits In Competitive Bidding, Steven H. Bullard
Maximizing Expected Profits In Competitive Bidding, Steven H. Bullard
Faculty Publications
Forest products firms often buy much of their raw material through competitive bidding. The bidding process is vital to such companies, yet models are often used which merely help predict winning bids. Managers should consider expected returns from potential timber buying contracts-the product of profit and the prob· ability of realizing that profit. A general approach is summarized for maximizing expected profit in competitive bidding. For timber buying, profits are net returns minus stumpage costs. The probability of obtaining the profit is the probability a given bid will be accepted, and can be represented by a probability density function. The …
Reforestation Timing Influences After-Tax Present Value Of Costs, Steven H. Bullard
Reforestation Timing Influences After-Tax Present Value Of Costs, Steven H. Bullard
Faculty Publications
Public Law 96-451 provides federal income tax incentives for reforestation. Taxpayers are allowed an investment tax credit in the year reforestation costs are incurred and deductions of one-fourteenth of reforestation costs on their first tax return, one-seventh on each of their next six tax returns, and one-fourteenth on their eighth tax return. The amount amortized is 95 percent of costs if a 10-percent tax credit is claimed or 100 percent of costs if an 8- percent credit is chosen. The credit and deductions can be applied for up to $10,000 of reforestation costs each year.
Long Term Response Of Loblolly Pine To Colloidal Phosphate, M. Victor Bilan, Marcey A. Gillespie
Long Term Response Of Loblolly Pine To Colloidal Phosphate, M. Victor Bilan, Marcey A. Gillespie
Faculty Publications
Three or six ounces of colloidal phosphate were applied either in planting hole or on soil surface while planting loblolly pine in East Texas. Combination of phosphate in the planting hole with NK on soil surface increased diameter growth for four years and the height growth for 18 years after planting.
Survival Of Pines On Droughty Soils: Two-Year Results, James Kroll, William C. Deauman, C. Darwin Foster, David Kulhavy, W. David Tracey
Survival Of Pines On Droughty Soils: Two-Year Results, James Kroll, William C. Deauman, C. Darwin Foster, David Kulhavy, W. David Tracey
Faculty Publications
Three species of pines (loblolly, slash and longleaf) were planted with four treatments (loblolly and slash = bareroot, clay dip slurry and TerrasorH ; longleaf = containerized) to test survival on droughty, typic quartzipsamments soils. At the end of the first season, survival~s significantly better for the containerized longleaf and Terrasoro treated loblolly pine (81 and 85%) followed by untreaRed loblolly pine (51%), clay-treated loblolly (50%), then Terrasorb treated slash (48%), untreated slash (41%) and clay-treated slash (36%). At the e~of the second growing season, longleaf had 56% survival, Terrasor~ treated loblolly (51%), clay-dip slurry loblolly (31.9%), Terrasoro treated slash …
Establishment Of Permanent Growth And Yield Plots In Loblolly And Slash Pine Plantations, J. David Lenhart, Ellis V. Hunt Jr., Jock A. Blackard
Establishment Of Permanent Growth And Yield Plots In Loblolly And Slash Pine Plantations, J. David Lenhart, Ellis V. Hunt Jr., Jock A. Blackard
Faculty Publications
Permanent plots have been established in 178 loblolly and 78 slash pine plantations throughout East Texas to study the development of stand structure over time. Analysis of the data will provide methods of estimating growth and yield, mortality, and site productivity to assist managers of these plantations.
Evaluating Landowner Assistance Programs And Other Wood Procurement Options, Gary D. Kronrad, C. Franklin, J.E. De Steiquer
Evaluating Landowner Assistance Programs And Other Wood Procurement Options, Gary D. Kronrad, C. Franklin, J.E. De Steiquer
Faculty Publications
A major activity of forest industry is supplying their mills with wood. There are four options for wood procurement: fee land, lease land, landowner assistance programs, and open market. The task of the corporate planner is to allocate the limited budget among these options in such a way that the needed volumes of wood are procured at the least cost. A methodology has been developed to aid in this capital budget in process and has been incorporated in an easy-to-use computer program.
Business Aspects Of The Mid-South Forest Economy, Steven H. Bullard, Thomas J. Straka
Business Aspects Of The Mid-South Forest Economy, Steven H. Bullard, Thomas J. Straka
Faculty Publications
Timber resources and related economic activity are substantial in the Mid-South states of Tennessee Alabama Mississippi, Louisiana, and Arkansas. Most of u; are awar~ that timber is an important aspect of our regional economy. We observe many stands of timber and often see it being harvested and transported to shipping points and manuf~cturing facilities. Many, however, do not fully appreoate the absolute size of the Mid-South's forest resources, nor their relative importance to states within the region. The Mid-South forest economy is described in two sections: (1) forest resources in general and (2) timber manufacturing or processing. Value added and …
Estimating Optimal Thinning And Rotation For Mixed-Species Timber Stands Using A Random Search Algorithm, Steven H. Bullard, Hanif D. Sherali, W. David Klemperer
Estimating Optimal Thinning And Rotation For Mixed-Species Timber Stands Using A Random Search Algorithm, Steven H. Bullard, Hanif D. Sherali, W. David Klemperer
Faculty Publications
The problem of optimal density over time for even-aged, mixed-species stands is formulated as a nonlinear-integer programming problem with numbers of trees cut by species and diameter class as decision variables. The model is formulated using a stand-table projection growth model to predict mixed-speciesg rowth and stand-structureO. ptimal thinning and final harvest age are estimated simultaneously using heuristic random search algorithms. For sample problemsw ith two speciesr, andom searchm ethodsp rovide near-optimalc uttings trategiesw ith very little computer time or memory. Optimal solutions are estimated for problems with eight initial species/diameter class groups, projected for up to three discrete growth …
Financial Maturity Of Timber And Maximum Net Present Values, Steven H. Bullard
Financial Maturity Of Timber And Maximum Net Present Values, Steven H. Bullard
Faculty Publications
Simple financial maturity guidelines recommend harvesting timber when its rate of value growth becomes less than or equal to the highest rate that can be earned in other investments of equal risk. Several authors have shown that fin ancial maturity guides are consistent with maximizing economic c riteria such as net present va lue , but their results are sometimes accepted by fore sters and land managers without being fully understood. In this article , financial maturity guides are derived in a way that is easily understood, simply by maximizing the present value of all future net income.
Primer On Forestry Investment, Thomas J. Straka, Steven H. Bullard, William F. Watson
Primer On Forestry Investment, Thomas J. Straka, Steven H. Bullard, William F. Watson
Faculty Publications
Most forest farmers know that growing timber is a good investment. Some forest farmers, however, and many new timberland investors may not fully understand the basic ingredients that make up a forestry investment. Like other ventures, forest farming involves costs and revenues, and rates of return can be calculated. These rates can be compared with interest rates for other investments, but forest farming is not exactly like your other investments. It has special qualities.
What Is Your “Effective” Rate Of Reforestation Cost?, Steven H. Bullard, Thomas J. Straka
What Is Your “Effective” Rate Of Reforestation Cost?, Steven H. Bullard, Thomas J. Straka
Faculty Publications
If you are considering a reforestation investment, you should be concerned with its effective cost; ,that is, the cost of reforestation after considering interest arid timing of the tax savings and cost-share payments. Effective regeneration costs depend on your interest rate, marginal tax rate, and whether or not you receive assistance from a state or federal cost-share program.