scholarly journals Susceptibility of parent and interspecific F1 hybrid pine trees to tip moth damage in a coastal North Carolina planting

2001 ◽  
Vol 31 (5) ◽  
pp. 919-923 ◽  
Author(s):  
Maxine T Highsmith ◽  
John Frampton ◽  
David O'Malley ◽  
James Richmond ◽  
Martesa Webb
Keyword(s):  
North Carolina ◽  
Loblolly Pine ◽  
Dominant Mode ◽  
Slash Pine ◽  
F1 Hybrids ◽  
F1 Hybrid ◽  
Pine Trees ◽  
Rhyacionia Frustrana ◽  
Hybrid Pine ◽  
Pinus Taeda L

Tip moth damage among families of parent pine species and their interspecific F1 hybrids was quantitatively assessed in a coastal planting in North Carolina. Three slash pine (Pinus elliotti var. elliotti Engelm.), two loblolly pine (Pinus taeda L.), and four interspecific F1 hybrid pine families were used. The F1 hybrids were as susceptible to damage by Nantucket pine tip moth (Rhyacionia frustrana (Comst.)), as was their susceptible loblolly pine parent. Their phenotypes support a dominant or partially dominant mode of inheritance for susceptibility. The phenotype of one slash pine family was not statistically different from the phenotypes of the loblolly and F1 hybrid pines. The high susceptibility of that one slash pine family appeared to be intrinsic, even though slash pine is considered resistant to tip moth damage. Tip moth damage on the two other slash pine families was significantly lower.

scholarly journals Tree Content and Taper Functions for Loblolly and Slash Pine Trees Planted on Non-Old-Fields in East Texas

1987 ◽  
Vol 11 (3) ◽  
pp. 147-151 ◽  
Author(s):  
J. David Lenhart ◽  
Terry L. Hackett ◽  
Charlie J. Laman ◽  
Thomas J. Wiswell ◽  
Jock A. Blackard
Keyword(s):  
Pinus Taeda ◽  
Loblolly Pine ◽  
Slash Pine ◽  
Old Fields ◽  
East Texas ◽  
Stem Taper ◽  
Pine Trees ◽  
Pinus Taeda L

Abstract Equations are presented to estimate total or partial stem content in cubic feet and pounds (green or dry) for loblolly pine (Pinus taeda L.) and slash pine (Pinus elliotti Engelm.) trees planted on non-old-fields in East Texas. Equations are included to estimate the content of the completetree (stem and branches). In addition, a set of compatible stem taper functions are described. South. J. Appl. For. 11(3):147-151.

Optimum Paraquat Treatments for Inducing Resin-Soaking in Slash and Loblolly Pines

1983 ◽  
Vol 7 (1) ◽  
pp. 31-33
Author(s):  
Donald R. Roberts ◽  
Kenneth W. Outcalt
Keyword(s):  
South Carolina ◽  
Loblolly Pine ◽  
Tree Mortality ◽  
Pinus Elliottii ◽  
Slash Pine ◽  
Savannah River ◽  
Savannah River Plant ◽  
Pine Trees ◽  
Loblolly Pines ◽  
Pinus Taeda L

Abstract Slash pine (Pinus elliottii Engelm. var elliottii) trees near Olustee, Florida, and loblolly pine (Pinus taeda L.) trees on the Savannah River Plant near Aiken, South Carolina, were treated with five concentrations of paraquat solution at three application volumes and by two methods to determine the optimum combination of concentration and volume for lightwood production in each species. Tree mortality was considerably higher with the tree injector method than with the bark-streak method. When tree mortality and yield are both considered, the optimum treatment for loblolly pine is 0.8 ml per injection with 6-percent paraquat or 0.5 ml of 7-percent paraquat per 25 mm of bark-streak wound. In slash pine trees, injections of 0.6 to 1 ml of 2-percent paraquat should give acceptable yields.

History, Distribution, Damage, and Life Cycle of a Pine Shoot Gall Sawfly, Xyela gallicaulis (Hymenoptera: Xyelidae)

2009 ◽  
Vol 44 (3) ◽  
pp. 276-283 ◽  
Author(s):  
Harry O. Yates ◽  
David R. Smith
Keyword(s):  
Life Cycle ◽  
Larval Development ◽  
Pinus Taeda ◽  
Loblolly Pine ◽  
Slash Pine ◽  
Shortleaf Pine ◽  
Nantucket Pine Tip Moth ◽  
Rhyacionia Frustrana ◽  
Second Year ◽  
Pinus Taeda L

Larvae of Xyela gallicaulis Smith cause shoot stem galls in young pines. Loblolly pine, Pinus taeda L., is the most seriously damaged, but galls have been observed on slash pine, P. elliottii var. elliottii Engelm., and shortleaf pine, P. echinata Mill. Studies in Virginia and Georgia confirm a 2-year life cycle. Larval development takes 4 - 6 wks. After feeding, larvae bore out of the galls and drop to the ground where they form a papery cocoon in the soil to pupate, and where they remain for 22 - 25 months. Adults emerge from cells constructed in the soil from early-December to mid-January of the second year. Eggs are inserted into the vegetative buds during odd-numbered years. Insect associates found feeding in or on gall tissues are the Nantucket pine tip moth, Rhyacionia frustrana (Comstock) (Tortricidae), and the weevil Conotrachelus carolinensis Schoof (Curculionidae).

Dimensionally compatible volume and taper equations

2001 ◽  
Vol 31 (5) ◽  
pp. 797-803 ◽  
Author(s):  
Mahadev Sharma ◽  
Richard G Oderwald
Keyword(s):  
North Carolina ◽  
Loblolly Pine ◽  
Coastal Plain ◽  
Pine Trees ◽  
Volume Equation ◽  
Pinus Taeda L ◽  
Taper Equation ◽  
Natural Stands ◽  
Taper Equations ◽  
Volume Equations

A dimensional analysis approach was applied to derive analytically consistent tree taper and volume equations. To achieve numerical consistency between the taper and volume equations, parameters of the taper and the volume equations were estimated simultaneously. Data from loblolly pine (Pinus taeda L.) trees grown in natural stands in the Coastal Plain of North Carolina and the Coastal Plain and Piedmont areas of Virginia were used to estimate the parameters. The dimensionally compatible volume equation is shown to be a better equation for estimation of the volume of loblolly pine trees grown in these sites and can be applied for the estimation of total volume. The taper equation accurately predicts tree diameters from butt to the tree tip. It can be used to predict the diameter at any specified height and to predict height to any top diameter limit.

scholarly journals Fusiform Rust Trends in East Texas: 1969-1987

1988 ◽  
Vol 12 (4) ◽  
pp. 259-261 ◽  
Author(s):  
J. David Lenhart ◽  
W. Thomas McGrath ◽  
Terry L. Hackett
Keyword(s):  
Pinus Taeda ◽  
Loblolly Pine ◽  
Pinus Elliottii ◽  
Slash Pine ◽  
Pine Plantations ◽  
East Texas ◽  
Infection Rates ◽  
Fusiform Rust ◽  
Cronartium Quercuum ◽  
Pinus Taeda L

Abstract Five surveys of pine plantations in East Texas over an 18-year period (1969-1987) indicated that fusiform rust (Cronartium quercuum [Berk.] Miyabe ex Shirai f. sp. fusiforme Birdsall and Snow) infection rates have increased to current levels of about 50% on slash pine (Pinus elliottii Engelm.) and are continuing to increase on loblolly pine (Pinus taeda L.) to 10-15% levels. South. J. Appl. For. 12(4):259-261.

scholarly journals ECONOMIC PERFORMANCE OF LOBLOLLY PINE STANDS IN SOUTHERN BRAZIL AS A RESULT OF DIFFERENT CROWN THINNING INTENSITIES1

2019 ◽  
Vol 43 (2) ◽  
Author(s):  
Mário Dobner Jr ◽  
Dagoberto Stein de Quadros
Keyword(s):  
Loblolly Pine ◽  
Economic Performance ◽  
Southern Brazil ◽  
Expectation Value ◽  
Economic Output ◽  
Land Expectation Value ◽  
Pine Trees ◽  
Crown Thinning ◽  
Log Price ◽  
Pinus Taeda L

ABSTRACT Approximately 1.6 million hectares of southern Brazil are cultivated with pines, and mainly with the loblolly pine (Pinus taeda L.). More than one third of the stands belong to independent log producers, whose aim is to maximize their economic results. In this study, a thinning experiment was evaluated over a production period of 30 years. The stands evaluated were submitted to three different crown thinning intensities, with an unthinned stand used as a control. The aim of the study was to evaluate economic criteria regarding realistic discount rates and production periods varying between 16-30 years. For the circumstances that were evaluated, 'extreme' and early release from competition of pruned loblolly pine trees lead to the best economic performance (land expectation value = ~36,000 US$ ha-1, i = 3% yr-1). Stands subjected to crown thinnings, independently of intensity, produced three times the economic output of unthinned and unpruned stands. Although the optimal harvest ages, according to the internal rate of return, are between 18-22 years for thinned and unthinned stands, from a long-term perspective (land expectation value) and for the current relationship between log price and size, the optimal economic performance requires that production periods are extended (to 24-26 years) from those currently practised in southern Brazil (15-20 years).

Fifth-Year Performance of Progenies of Selected South African Slash and Loblolly Pine Clones

1981 ◽  
Vol 5 (2) ◽  
pp. 62-65
Author(s):  
John F. Kraus ◽  
Earl R. Sluder
Keyword(s):  
South African ◽  
Pinus Taeda ◽  
Loblolly Pine ◽  
Tree Improvement ◽  
Slash Pine ◽  
The South ◽  
Improvement Program ◽  
Seed Orchards ◽  
Pinus Taeda L ◽  
Better Than

Abstract Control-pollinated polymix progenies of 9 slash pine (P. elliottii Engelm.) and 10 loblolly (Pinus taeda L.) pine from some of the best clones in a South African tree improvement program were tested in Georgia. Overall, the progenies of the South African selections in both species have done well after five years in the field. One of the slash pine and three of the loblolly pine families were better than open-pollinated progeny from established seed orchards.

scholarly journals Site Index Equations for Loblolly and Slash Pine Plantations on Non-Old-Fields in East Texas

1986 ◽  
Vol 10 (2) ◽  
pp. 109-112 ◽  
Author(s):  
J. David Lenhart ◽  
Ellis V. Hunt ◽  
Jock A. Blackard
Keyword(s):  
Loblolly Pine ◽  
Pinus Elliottii ◽  
Growth Function ◽  
Site Index ◽  
Slash Pine ◽  
Old Fields ◽  
East Texas ◽  
Height Prediction ◽  
Index Index ◽  
Pinus Taeda L

Abstract Equations to estimate site index (index age 25 years) for plantations of loblolly pine (Pinus taeda L.) and slash pine (Pinus elliottii Engelm.) on non-old-fields in East Texas have been developed. The height-prediction curves were based on the Richards' growth function and track well within the range of the data (1-17 years). South. J. Appl. For. 10:109-112, May 1986.

Incorporating genetic parameters into a loblolly pine growth-and-yield model

2006 ◽  
Vol 36 (8) ◽  
pp. 1959-1967 ◽  
Author(s):  
Joshua P Adams ◽  
Thomas G Matney ◽  
Samuel B Land Jr. ◽  
Keith L Belli ◽  
Howard W Duzan Jr.
Keyword(s):  
North Carolina ◽  
Loblolly Pine ◽  
Site Index ◽  
Growth And Yield ◽  
Yield Model ◽  
Stand Volume ◽  
Regression Functions ◽  
Sib Families ◽  
Growth And Yield Model ◽  
Pinus Taeda L

Differences in survival, diameter, height (site index), and stem profile among eight North Carolina half-sib families and one Mississippi–Alabama commercial check of loblolly pine (Pinus taeda L.) at three spacings over 17 years were evaluated for effects on a growth-and-yield model. Actual stand volume at age 17 was determined from a 100% measurement of all trees. This volume was compared with predicted volumes from age nine measurements using (i) the unmodified model and (ii) the model after modifications for family differences. Modifications to the model included family-specific site indices for height differences and family-specific regression functions for each of the other traits. The unmodified model resulted in an underestimate of actual stand volume by 31%. Adjustments for family differences in dominant height (site index), survival, or profile had little effect on this bias. Insertion of family-specific regressions for stem profile and site index in combination with survival-diameter density effects greatly reduced the bias and provided the best estimates of future stand volumes.

scholarly journals WholeTree Substrates Derived from Three Species of Pine in Production of Annual Vinca

2008 ◽  
Vol 18 (1) ◽  
pp. 13-17 ◽  
Author(s):  
Glenn B. Fain ◽  
Charles H. Gilliam ◽  
Jeff L. Sibley ◽  
Cheryl R. Boyer
Keyword(s):  
Loblolly Pine ◽  
Longleaf Pine ◽  
Pinus Palustris ◽  
Ground Level ◽  
Pinus Elliottii ◽  
Slash Pine ◽  
Pine Bark ◽  
Hammer Mill ◽  
Horticultural Crops ◽  
Pine Trees

The objective of this study was to evaluate the potential for use of container substrates composed of processed whole pine trees (WholeTree). Three species [loblolly pine (Pinus taeda), slash pine (Pinus elliottii), and longleaf pine (Pinus palustris)] of 8- to 10-year-old pine trees were harvested at ground level and the entire tree was chipped with a tree chipper. Chips from each tree species were processed with a hammer mill to pass through a 0.374-inch screen. On 29 June 2005 1-gal containers were filled with substrates, placed into full sun under overhead irrigation, and planted with a single liner (63.4 cm3) of ‘Little Blanche’ annual vinca (Catharanthus roseus). The test was repeated on 27 Aug. 2005 with ‘Raspberry Red Cooler’ annual vinca. Pine bark substrate had about 50% less air space and 32% greater water holding capacity than the other substrates. At 54 days after potting (DAP), shoot dry weights were 15% greater for plants grown in 100% pine bark substrate compared with plants grown in the three WholeTree substrates. However, there were no differences in plant growth indices for any substrate at 54 DAP. Plant tissue macronutrient content was similar among all substrates. Tissue micronutrient content was similar and within sufficiency ranges with the exception of manganese. Manganese was highest for substrates made from slash pine and loblolly pine. Root growth was similar among all treatments. Results from the second study were similar. Based on these results, WholeTree substrates derived from loblolly pine, slash pine, or longleaf pine have potential as an alternative, sustainable source for producing short-term horticultural crops.

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