Facilitation Versus Competition in Neotropical Old-Fields: A Case Study After Pinus taeda Cultivation in Brazil

Abstract Four reproduction cutting methods employed on an average site (S.I. = 85 to 90 feet at 50 years) in second-growth loblolly-shortleaf pine (Pinus taeda L.--P. echinata Mill.) in south Arkansas provided adequate pine regeneration to establish or maintain well-stocked stands. During the 36-year study period, heavy seed-tree and diameter-limit cutting methods produced significantly more cubic-foot volume than selection and clearcutting, while clearcutting resulted in significantly less board-foot (Doyle) volume. Since many trees on the clearcut areas are just now reaching sawlog size, board-foot volume production among all treatments will probably equalize as time goes on. Advantages and disadvantages of the four cutting methods for large landholders and private nonindustrial land-owners are discussed.

Download Full-text

Predicting age-age genetic correlations in tree-breeding programs: a case study of Pinus taeda L.

Theoretical and Applied Genetics ◽

10.1007/s001220050027 ◽

2000 ◽

Vol 100 (2) ◽

pp. 199-206 ◽

Cited By ~ 17

Author(s):

D. P. Gwaze ◽

F. E. Bridgwater ◽

T. D. Byram ◽

J. A. Woolliams ◽

C. G. Williams

Keyword(s):

Pinus Taeda ◽

Genetic Correlations ◽

Tree Breeding ◽

Breeding Programs ◽

Pinus Taeda L

Download Full-text

Forestry's Third Revolution: Integrating Biotechnology into Pinus taeda L. Breeding Programs

Southern Journal of Applied Forestry ◽

10.1093/sjaf/25.3.116 ◽

2001 ◽

Vol 25 (3) ◽

pp. 116-121 ◽

Cited By ~ 3

Author(s):

Claire G. Williams ◽

Thomas D. Byram

Keyword(s):

Pinus Taeda ◽

Breeding Program ◽

Case Study Approach ◽

Breeding Programs ◽

Forest Biotechnology ◽

Study Approach ◽

Biotechnology Research ◽

Pinus Taeda L ◽

Aid Policy

Abstract The Third Revolution—the application of molecular biology to plant improvement—is providing biotechnology for Pinus taeda breeding programs in the southern United States. To harness commercial value, forest biotechnology must be integrated with pine breeding. Overlaying an agriculture biotechnology template on any aspect of forestry ignores key historical, economic and biological factors unique to pine breeding programs and even to biotechnology applications. Understanding differences between forestry and agriculture will aid policy decisions about the use of genetically enhanced pines and identify numerous leverage points for directing forest biotechnology research toward commercial advantage. Integrating biotechnology into a P. taeda breeding program is illustrated using a case study approach. A molecular marker system is proposed for improving the selection efficacy of a pine breeding program. South. J. Appl. For. 25(3):116–121.

Download Full-text

Variation of soil carbon stocks during the renaturation of old fields: the case study of the Pantelleria Island, Italy

Forest - Rivista di Selvicoltura ed Ecologia Forestale ◽

10.3832/efor0433-0040102 ◽

2007 ◽

Vol 4 (1) ◽

pp. 102-109 ◽

Cited By ~ 10

Author(s):

T La Mantia ◽

G Oddo ◽

J Rühl ◽

G Furnari ◽

R Scalenghe

Keyword(s):

Soil Carbon ◽

Carbon Stocks ◽

Old Fields ◽

Soil Carbon Stocks

Download Full-text

A Comparison of earlywood–latewood Demarcation Methods – A case study in Loblolly PINE

IAWA Journal ◽

10.1163/22941932-90000088 ◽

2012 ◽

Vol 33 (2) ◽

pp. 187-195 ◽

Cited By ~ 14

Author(s):

Finto Antony ◽

Laurence R. Schimleck ◽

Richard F. Daniels

Keyword(s):

Pinus Taeda ◽

Loblolly Pine ◽

Inflection Point ◽

Annual Ring ◽

Juvenile Wood ◽

Basic Density ◽

Threshold Value ◽

Point Method ◽

Threshold Density

Demarcating the transition from earlywood (EW) to latewood (LW) is important for accurately estimating the width of both wood types within an annual ring, their respective densities and the proportion of LW within an annual ring. Different methods have been used to define the transition from EW to LW and include Mork’s index, the threshold density method and the inflection point method. In loblolly pine (Pinus taeda L.) a threshold value of 480 kg/m3 (basic density) has conventionally been used to demarcate EW from LW. In this study the three methods: a threshold density of 480 kg/m3, the inflection point method and Mork’s index were used to define the point at which EW transitioned to LW using annual rings for 20 loblolly pine breast height increment cores. Significant correlation was observed among the three methods in identifying the demarcation point. However, the results indicated that EW-LW demarcation points identified using the three methods in juvenile wood rings were different to mature wood rings; with the most pronounced differences being observed for Mork’s index.

Download Full-text

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

Southern Journal of Applied Forestry ◽

10.1093/sjaf/11.3.147 ◽

1987 ◽

Vol 11 (3) ◽

pp. 147-151 ◽

Cited By ~ 7

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.

Download Full-text

Fire and Fertilizer as Alternatives to Hand Thinning in a Natural Stand of Precommercial-Sized Loblolly Pine

Southern Journal of Applied Forestry ◽

10.1093/sjaf/19.1.5 ◽

1995 ◽

Vol 19 (1) ◽

pp. 5-9

Author(s):

F. Thomas Lloyd ◽

Thomas A. Waldrop ◽

David L. White

Keyword(s):

Pinus Taeda ◽

Loblolly Pine ◽

Nitrogen Fertilizer ◽

Prescribed Burning ◽

Height Growth ◽

Stem Density ◽

Economic Returns ◽

Natural Stand ◽

Pinus Taeda L

Abstract A winter backing fire thinned a natural 4-yr-old loblolly pine (Pinus taeda L.) stand from below but reduced stem density less than did hand thinning. Application of nitrogen fertilizer did not accelerate natural thinning over the 4 yr test period. Burning and fertilizing increased dbh growth of crop trees, but gains were less than those produced by hand thinning. Height growth of crop trees was increased by fertilization but may have been reduced by burning. A case study showed that economic returns from prescribed burning were comparable to those from hand thinning for a 30-yr rotation. However, additional research is needed to produce prescription guidelines that minimize the risks of burning young stands before the practice can be recommended. South. J. Appl. For. 19(1): 5-9.

Download Full-text