3 edition of Precommercial thinning of naturally seeded slash pine increases volume and monetary returns found in the catalog.
Precommercial thinning of naturally seeded slash pine increases volume and monetary returns
Earle P. Jones
by Forest Service, U.S. Dept. of Agriculture, Southeastern Forest Experiment Station in Asheville, N.C
Written in English
|Statement||by Earle P. Jones, Jr.|
|Series||Research paper SE -- 164., Research paper SE -- 164.|
|Contributions||Southeastern Forest Experiment Station (Asheville, N.C.), United States. Forest Service.|
|The Physical Object|
|Pagination||12 p. :|
|Number of Pages||12|
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. Key Words: Intermediate harvesting, nitrogen, phosphorus, Pinus taeda L., precommercial thinning. The degree that fertilization will increase volume incre- ment in pole and sawlog loblolly pine (Pinus taeda L.) stands depends on the initial stand basal area per hectare (Moehring , Windsor and Reines , Wells et al.
• In natural stands, thinning is best accomplished by individual tree selection where each tree to be cut is marked. • In pine plantations, a combination thinning (row thin-ning and selective thinning) is best. Every third, fourth or fifth row should be removed and intermediate rows thinned by individual selection. 14x14 ft. Sample trees were measured pre- and post-thinning, 3 yrs after thinning, and 5 yrs after thinning, starting in (Nez Perce sites) and (Spokane sites). Models of diameter and height growth, change in crown ratio and height to crown base, and probability of western pine shoot borer (Eucosma sonomana Kearfott) infestation were.
both fertilizers caused the greatest increase in seed weight. Mergen and Voight (18)' reported that fertilizer treatments produced heavier slash pine seeds. However, in one previous experiment with western white pine, fertilizer was ineffective in stimulating strobilus production of fruiting-age trees (2). Varietal Loblolly Pine. 75% More Revenue vs 2nd Gen 1st thinning as early as years 1st thinning can yield 60% more than OP and as much as 50% with solid wood potential Final Harvest with >80% of trees as Sawtimber.
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Precommercial thinning of naturally seeded slash pine increases volume and monetary returns. Asheville, N.C.: Forest Service, U.S. Dept. of Agriculture, Southeastern Forest Experiment Station, (OCoLC) Download PDF Precommercial Thinning Of Naturally Seeded Slash Pine Increases Volume And Monetary Returns book full free.
Precommercial Thinning Of Naturally Seeded Slash. Precommercial Thinning of Naturally Seeded Slash Pine Increases Volume and Monetary Returns Earle P. Jones, Jr, Principal Silviculturist Macon, Georgia Abstract.
--A naturally seeded slash pine (Pinus elliottii Engelm. var, elliottii) stand, having up to 50, stems per acre, was pre- commercially thinned at age by: 1. Lohrey, R.E. Precommercial thinning increases diameter and height growth of slash pine. Res. Note SO New Orleans: U.S.
Department of Agriculture, Forest Service, Southern Forest Experiment Station; 4 p. Lohrey, R.E. Growth responses of loblolly pine to precommercial thinning. Southern Journal of Applied Forestry 1(3); Precommercial thinning of naturally seeded slash pine increases volume and monetary returns / By Earle P.
Jones, United States. Forest Service and. 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 straw.
An overstocked slash pine stand. Young stands with very high densities are common for pines when naturally regenerated.
A precommercial thinning before the live crown ratios drop to this point will improve the health of the stand, increasing height growth. However, longer rotations can bring higher financial returns on larger diameter trees if landowners are willing to begin thinning their pine stands when trees are 10 to 15 years old.
Pine sawtimber, poles, and/or plylogs are most often the forest products with the highest value and, if economic returns are a priority, the most desirable. the minimum size for commercial thinning.
A common exception is a natural stand that has regenerated with over trees per acre or a plantation that has experienced heavy in-growth of additional natural pine seedlings.
Unlike a commercial thinning, a precommercial thinning costs the landowner directly. Current rates range from $80 to $ per. A first commercial thinning of loblolly pine stands to harvest pulpwood is often conducted between stand ages of 10 and 20 years (Demers et al.
At earlier stand ages, a pre-commercial. Thinning should be performed periodically (usually every 5 to 10 years after the first thinning) throughout the life of a pine forest. Determination of harvest frequency and intensity depends on several factors including management objectives, age, soil productivity, crown ratio and closure, initial planting density, markets, access, terrain.
When sawlogs or multiple products are desired, thinnings should be an integral part of southern pine stand management (Bennett ). Under such circumstances, the issues that must be addressed include: 1) The relationship between initial spacing and the need for thinnings, 2) the time to thin (age), 3) the intensity and frequency of thinnings, and 4) the most appropriate method of thinning.
For red pine, post-thinning stand density has a greater impact on post-thinning stand growth (Gilmore et al. ) than the thinning method used (Smith ). For income focused management, sawtimber trees should be thinned periodically to maintain uniform growth rates.
Loblolly pine has good seed crops every 2 or 3 years and slash has good seed crops at about 3-year intervals. Shortleaf pine has good seed crops every 3 to 5 years.
Longleaf pine, however, does not have good seed crops except every 5 to 7 years. It is important to observe flower and cone production when making plans for natural regeneration. Commercial Pine Thinning.
The practice of thinning works on the proven fact that most sites can produce the same amount of volume growth on fewer good stems as they can on many smaller ones. Thinning will occur naturally in a stand that is overcrowded, but the process will take many years and result in a reduced growth rate of all the trees.
increase the returns. The example planted pine timberland used here would be purchased at age 12 years, following a thinning, and retained for up to its 26 year and harvested or sold with the land. The land value (uninflated) is included in the income at the completion of.
The ease and success of planting slash pine have signifi-cantly increased in its range. Extensive planting and natural regeneration of open agricultural and forest land brought a sharp rise in slash pine acreage between and (Sheffield and others ).
Much of the planting was on sites that did not favor slash pine, and where performance. Ina precommercial thinning demonstration study was installed in naturally regenerated loblolly-shortleaf pine (Pinus taeda and P. echinata, respectively) stands that were 8, 14, and 19 years old.
Treatments consisted of three levels of precommercial thinning with an unthinned control. Precommercial thinning promoted the growth of individual. Slash pine was introduced in Kentucky, Virginia and eastern Texas in the 's, and now reproduces naturally within these states. Habitat: The climate within the natural range of slash pine is warm and humid, and it likes wet summers, drier falls and springs.
It grows well with rainfall averages about mm (50 in) per year, and. Slash pine seed was sown in March on 40 acres of the Palustris Experimental Forest in central Louisiana.
Since the aim was to create an over-dense stand for experimental purposes, 2 lb. of seed were sown per acre--about twice the recomn~ended rate. The catch was good, and in early. According to Lohrey and Kossuth (): "The climate within the natural range of slash pine is warm and humid with wet summers and drier falls and ll averages about mm (50 in) per year and summer rains of 13 mm ( in) or more occur about four times per month.
The mean annual temperature in the slash pine region is 17° C (63° F), with extremes of 41° C (° F) and PURPOSE: Pre-commercial thinning releases over-crowded pine stands to prevent stagnation and increase growth on remaining trees.
Pre-commercial thinning is usually applied to natural stands with trees less than 5 inches in diameter. In some rare instances a pine plantation may qualify if a substantial amount of natural pine has seeded.Precommercial thinning of naturally seeded slash pine increases volume and monetary returns / ([Asheville, N.C.]: Dept.
of Agriculture, Forest Service, Southeastern Forest Experiment Station, ), by Earle P. Jones, United States Forest Service, and N.C.) Southeastern Forest Experiment Station (Asheville (page images at HathiTrust).