scholarly journals Wood properties and ring width responses to long-term atmospheric CO2 enrichment in field-grown loblolly pine (Pinus taeda L.)

1999 ◽  
Vol 22 (2) ◽  
pp. 213-219 ◽  
Author(s):  
F. W. TELEWSKI ◽  
R. T. SWANSON ◽  
B. R. STRAIN ◽  
J. M. BURNS
Keyword(s):  
Pinus Taeda ◽  
Loblolly Pine ◽  
Ring Width ◽  
Co2 Enrichment ◽  
Wood Properties ◽  
Atmospheric Co2 ◽  
Pinus Taeda L

Long-term effects of stand density management and genotype on wood properties of loblolly pine (Pinus taeda L.) in the mid-South USA

2021 ◽  
Vol 491 ◽  
pp. 119176
Author(s):  
Michael A. Blazier ◽  
Thomas Hennessey ◽  
Laurence Schimleck ◽  
Scott Abbey ◽  
Ryan Holbrook ◽  
...  
Keyword(s):  
Pinus Taeda ◽  
Loblolly Pine ◽  
Stand Density ◽  
Wood Properties ◽  
Long Term Effects ◽  
Stand Density Management ◽  
Pinus Taeda L

Nondestructive estimation of Pinus taeda L. wood properties for samples from a wide range of sites in Georgia

2005 ◽  
Vol 35 (1) ◽  
pp. 85-92 ◽  
Author(s):  
P D Jones ◽  
L R Schimleck ◽  
G F Peter ◽  
R F Daniels ◽  
A Clark III
Keyword(s):  
Pinus Taeda ◽  
Loblolly Pine ◽  
Near Infrared ◽  
Microfibril Angle ◽  
Nir Spectroscopy ◽  
Wood Properties ◽  
Small Sample ◽  
Dry Density ◽  
Wide Range ◽  
Pinus Taeda L

Preliminary studies based on small sample sets show that near infrared (NIR) spectroscopy has the potential for rapidly estimating many important wood properties. However, if NIR is to be used operationally, then calibrations using several hundred samples from a wide variety of growing conditions need to be developed and their performance tested on samples from new populations. In this study, 120 Pinus taeda L. (loblolly pine) radial strips (cut from increment cores) representing 15 different sites from three physiographic regions in Georgia (USA) were characterized in terms of air-dry density, microfibril angle (MFA), and stiffness. NIR spectra were collected in 10-mm increments from the radial longitudinal surface of each strip and split into calibration (nine sites, 729 spectra) and prediction sets (six sites, 225 spectra). Calibrations were developed using untreated and mathematically treated (first and second derivative and multiplicative scatter correction) spectra. Strong correlations were obtained for all properties, the strongest R2 values being 0.83 (density), 0.90 (MFA), and 0.93 (stiffness). When applied to the test set, good relationships were obtained (Rp2 ranged from 0.80 to 0.90), but the accuracy of predictions varied depending on math treatment. The addition of a small number of cores from the prediction set (one core per new site) to the calibration set improved the accuracy of predictions and importantly minimized the differences obtained with the various math treatments. These results suggest that density, MFA, and stiffness can be estimated by NIR with sufficient accuracy to be used in operational settings.

Identification of QTLs influencing wood property traits in loblolly pine (Pinus taeda L.). II. Chemical wood properties

2002 ◽  
Vol 104 (2) ◽  
pp. 214-222 ◽  
Author(s):  
M. M. Sewell ◽  
M. F. Davis ◽  
G. A. Tuskan ◽  
N. C. Wheeler ◽  
C. C. Elam ◽  
...  
Keyword(s):  
Pinus Taeda ◽  
Loblolly Pine ◽  
Wood Property ◽  
Wood Properties ◽  
Pinus Taeda L

An Economic Evaluation of the Use of Oust for Herbaceous Weed Control in Loblolly Pine Plantations

1992 ◽  
Vol 16 (1) ◽  
pp. 40-47 ◽  
Author(s):  
Rodney L. Busby
Keyword(s):  
Pinus Taeda ◽  
Weed Control ◽  
Loblolly Pine ◽  
Economic Returns ◽  
Stand Growth ◽  
Growth Increments ◽  
Long Term Effect ◽  
Herbaceous Weed Control ◽  
Pinus Taeda L

Abstract Herbaceous weed control using Oust (sulfometuron methyl²) is economically efficient in loblolly pine (Pinus taeda L.) plantations given reasonable expectations about the long-term effect of the treatment on stand growth. Increases in the sizes of the growth increments following treatment that have been reported in the literature, and the economic returns this analysis shows are possible, indicate that investment in herbaceous weed control can be a prudent silvicultural option. South. J. Appl. For. 16(1):40-47.

scholarly journals Effect of Fertilization on Growth and Wood Properties of Thinned and Unthinned Midrotation Loblolly Pine (Pinus taeda L.) Stands

2011 ◽  
Vol 35 (3) ◽  
pp. 142-147 ◽  
Author(s):  
Finto Antony ◽  
Laurence R. Schimleck ◽  
Richard F. Daniels ◽  
Alexander Clark
Keyword(s):  
Specific Gravity ◽  
Loblolly Pine ◽  
Nitrogen Fertilization ◽  
Block Design ◽  
Ring Width ◽  
Wood Properties ◽  
Fertilizer Application ◽  
Four Blocks ◽  
Earlywood Width ◽  
Pinus Taeda L

Abstract Growth and wood properties were measured on breast height cores collected from two stands, New Bern and Bertie, located in the lower Coastal Plain of North Carolina. The New Bern site was thinned before fertilizer application, and the Bertie site was not. The study was laid out in a randomized complete block design with each treatment replicated in four blocks at New Bern and two blocks at Bertie. The treatments were different levels of nitrogen fertilization: control (no nitrogen) and 112, 224, and 336 kg/ha. In addition, 28 kg/ha of phosphorus was included with each treatment. The objective of this study was to examine the response in growth and wood properties to midrotation fertilization in a thinned versus an unthinned stand. A significant decrease in latewood specific gravity was observed following nitrogen fertilization in the thinned stand but not in the unthinned stand. Whole ring width, latewood width, and earlywood width significantly increased following nitrogen fertilization at New Bern but not at Bertie. Whole ring specific gravity, earlywood specific gravity, latewood percentage, and earlywood:latewood ratio did not show any change due to fertilization in either stand. Responses in both growth and wood characteristics lasted for 2–3 years following fertilization and depended on the amount of fertilizer applied and whether or not the site was thinned. The response to nitrogen application was significant for the thinned stand only.

Identification of QTLs influencing wood property traits in loblolly pine (Pinus taeda L.). I. Physical wood properties

2000 ◽  
Vol 101 (8) ◽  
pp. 1273-1281 ◽  
Author(s):  
M. M. Sewell ◽  
D. L. Bassoni ◽  
R. A. Megraw ◽  
N. C. Wheeler ◽  
D. B. Neale
Keyword(s):  
Pinus Taeda ◽  
Loblolly Pine ◽  
Wood Property ◽  
Wood Properties ◽  
Pinus Taeda L

Identification of representative sampling heights for specific gravity and moisture content in plantation-grown loblolly pine (Pinus taeda)

2012 ◽  
Vol 42 (3) ◽  
pp. 574-584 ◽  
Author(s):  
Finto Antony ◽  
Laurence R. Schimleck ◽  
Richard F. Daniels
Keyword(s):  
Specific Gravity ◽  
Moisture Content ◽  
Pinus Taeda ◽  
Loblolly Pine ◽  
Wood Properties ◽  
Representative Sampling ◽  
Breast Height ◽  
Sampling Height ◽  
Pinus Taeda L ◽  
Whole Tree

Conventionally, increment cores collected at breast height (1.4 m) have been used to measure wood properties of standing loblolly pine (Pinus taeda L.) trees. This height has been used because of the ease of sampling and cost involved in extracting the cores. In this study, the efficacy of a breast-height core to represent whole-tree specific gravity (SG) and moisture content (MC) was examined. The sampling height that best represents whole-tree SG and MC was identified using the correlation between volume-weighted whole-tree SG and MC with SG and MC measurements collected at different heights within a tree. We found a high correlation between observed whole-disk SG and MC with volume-weighted whole-tree SG and MC at most sampling heights. The strength of the correlation followed a skewed parabolic curve form for both wood properties. The strongest correlations were observed between 4.6 and 6.1 m, with marginally lower correlations at the base of the tree, and the weakest correlations were observed towards the tip of the tree. In addition, it was found that the number of stands and trees that need to be sampled to achieve a certain accuracy in overall mean whole-tree SG and MC was greater if breast height was used as a sampling height compared with the most representative sampling heights identified (4.6 m for SG and 6.1 m for MC).

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