3 edition of Harvesting costs for mechanized thinning systems in slash pine plantations found in the catalog.
Harvesting costs for mechanized thinning systems in slash pine plantations
James E. Granskog
by U.S. Dept. of Agriculture, Forest Service, Southern Forest Experiment Station in [New Orleans, La.]
Written in English
|Statement||James E. Granskog|
|Series||Research paper SO -- 141|
|Contributions||Southern Forest Experiment Station (New Orleans, La.)|
|The Physical Object|
|Pagination|| p. ;|
Loblolly pine (Pinus taeda L.) is the most important timber-producing tree species in Arkansas and the South as a whole. Loblolly pine naturally occurs primarily in the coastal plain region of the southern United States. In Arkansas, this region comprises the southwest third of the state (Figure 1). Though loblolly pine is native to. Thinning & Improvement Cuttings. Depending on the landowner's objectives and planned product outputs at the end of the rotation, it is sometimes necessary to carry out some sort of cutting within the established pine population in the middle of the rotation. Click on the image to the right to watch a short video about thinning.
Thinning Red Pine Plantation at Wolf Lake - Duration: John Rajala 5, views. How to Fill a Raised Bed (And Save Money) - Duration: Gardener Scott 1,, views. Plantations with no thinning can still return a profit to the landowner, but their use will likely be limited to low-value pulpwood. Unthinned stands will begin to THINNING One of the most important factors affecting the quality and quantity of sawlogs and other forest products from red pine plantations is control of the stand Size: KB.
Pine trees are harvested when they are years old, but younger trees are selectively thinned out for pulpwood. Forestry Facts South Africa has a plantation area of more than million hectares, representing only % of the land area. This percentage compares poorly to the 30% of the USA and the 67% of Japan. (Slash Pine. SELECTED FOREST HARVESTING MACHINES OPERATING IN mechanized harvesting systems in the western United States as harvest of second growth increased. A major reason for that interest is that labor productivity using conventional APPENDIX F. 1. Unit Cost Summary for Specific Harvesting Machines. .. APPENDIX F Unit Cost Summary for File Size: 2MB.
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Harvesting costs of four tree harvester systems were estimated for row thinning l&year-old slash pine plantations. Two full-tree harvester systems had lower harvesting costs per cord than shortwood harvester and tree-length harvester systems. The shortwood and tree-length harvester systems had lower manpower require-Cited by: 2.
Harvesting costs for mechanized thinning systems in slash pine plantations. [New Orleans, La.]: U.S. Dept.
of Agriculture, Forest Service, Southern Forest Experiment Station, (OCoLC) formation of this kind is needed to estimate thin- ning costs, determine economical thinning op- portunities, and obtain an optimum balance among the machines combined into a system. The study was limited to mechanical row thin- ning of slash pine plantations growing in sandy soils on flat terrain.
Results are applicable to like operations in plantations on similar sites throughout the slash pine belt. A comparative study was conducted in the second commercial thinning of a year-old slash pine (Pinus elliottii Engelm.) plantation in South Africa.
The goal of the study was to compare semi-mechanized tree-length harvesting with fully mechanized cut-to-length (CTL harvesting) in terms of: compliance with silvicultural prescriptions, value and volume recovery, productivity, cost and residual Author: Tigere Pasca Dembure, Andrew McEwan, Raffaele Spinelli, Natascia Magagnotti, Muedanyi Ramantswana.
A comparison between two alternative harvesting systems in the thinning of fast-growing pine plantations under the conditions of low labour cost Article in European Journal of Forest Research.
Mechanized row-thinning systems in slash pine plantations. [New Orleans, La.]: Southern Forest Experiment Station, Forest Service, U.S.
Dept. of Agriculture, (OCoLC) equipment. Harvesting systems include a cut-to-length harvester-forwarder system, a whole-tree/log-length skidder system, and a skyline cable system. Harvesting costs can be estimated for both clearcutting and partial cutting for trees ranging from 3 cubic feet to cubic feet.
Cost estimates are in U.S. dollars per cubic feet. Harvesting systems are named based on the form in which the wood arrives at the landing. The three general types of harvesting systems include shortwood, tree-length, and full-tree. We will focus our discussion on the tasks of moving to the tree, felling the tree, processing it at the stump, and transporting the tree to the landing.
Conventional Harvesting Costs. Conventional timber harvesting equipment is expensive and can constitute as much as 40 to 50 percent of the delivered cost of wood. Purchase costs, for highly mechanized conventional systems capable of handling the harvest and recovery of woody biomass commonly range from $, to $2, (1).
r Slash is unavoidable when timber harvesting. r Slash treatment has a definite cost. r Slash near streams, lakes and wetlands is subject to special regulation. r Slash provides soil nutrients.
Landings r Size and number of landings are affected by species, products developed, size. The increased distance between row thinning removals enhanced the potential volume harvested trail length (m3/m) and in turn led up to a 8% increase in harvesting productivity, up to a 21%.
vesting in terms of harvesting productivity, system costs and impact on stand structure. Compartments of different planting geometries ranging from × m to × m, × 3 m and × m at two thinning reference ages were simulator by: 1.
Pine straw harvesting is easily mechanized in existing longleaf plantations. The even spacing and generally closed canopy of longleaf plantations makes for high yields of clean, weed free pine straw. Plantations on existing farmland or previously cleared land lack the natural vegetation that can hinder straw gathering.
Likewise, plantations are. Slash pine, biologically, needs to be thinned when live crown ratios are greater than 1/3 (33%) if the goal is to maintain a vigorously growing stand. Pine straw revenues may not make thinning a pine stand financially attractive. Typically, once a stand is thinned in Georgia it is no longer raked for Size: 2MB.
“mechanical thinning”) has become preferred to the initial thinning of pine plantations because it is generally quick, economical and allows harvesters to utilize larger equipment.
Row thinning, as the name implies, involves removing entire rows within a plantation. Row thinning involves removing every second to seventh row, depending on the intensity of the thinning Size: KB.
Overall, mechanized harvesting systems have a number of advantages: 1) They result in higher production rates and worker productivity, so that harvesting costs per unit of production are lower. 2) They are non-labor intensive and, with proper maintenance, mechanically reliable. 3) They are intensive to adverse weather and ground conditions.
The fungus causing fusiform rust is greatly favored in young, rapidly growing pine plantations of slash and loblolly pines, especially when established in high rust hazard areas and in close proximity to oaks, especially water oak, which are alternate hosts for the fungus.
Oak abundance generally increases in areas where fire is absent. The addition of a small chipper to a tree-length harvesting system was examined in three replicated studies across Georgia. Each trial differed in species, stand location, stand age, and harvest treatments ().The first study evaluated a clearcut on a year old slash pine (Pinus elliottii) plantation that had been thinned once on a flatwoods site in Echols County, Georgia, as described by Cited by: More acres of planted slash pine are also approaching a merchantable condition than any other species, even though the bulk of the plantings has been in the last 20 years.
Because most planting is so recent, there has been a lack of information on the growth and yield of slash pine by: 3. A Look at Thinning. Here in North Florida, in the middle of one of the world's biggest concentrations of paper mills, pine pulpwood plantations make good financial sense.
Prepare the land, plant, and once the trees are big enough to sell, harvest and start again. Most of our pine plantations can be clearcut for pulpwood years after planting. standard for contemporary slash pine plantation management. Control of weeds, woody shrub, and herbaceous species is a vital part of increased slash pine plantation productivity.
Plantation establishment from seedling is usually with year old bare root seedlings or container seedlings. When out planting seedling by hand orFile Size: 98KB.slash pine plantations including competition control, fertilization (loblolly and slash at the same density as loblolly and slash pine for a cost per acre of $ Planting cost per acre for all and slash (Table 7) pine scenarios: (1) thin at age and years to 65 ft.
2 /ac, no pine straw, $/acre establishment cost File Size: KB.harvest of an unthinned loblolly pine plantation using five growth and yield programs. Site index=80 feet (base age 25 yr). Four models are for cutover sites, but WinYield-old model is for an old-field site.
Figure 2. Stumpage value and mill value of loblolly pine pulpwood, chip-n-saw, and sawlogs. Typically, about.