scholarly journals Agency of Fire in Propagation of Longleaf Pines

1917 ◽  
Vol 64 (6) ◽  
pp. 497-508 ◽  
Author(s):  
E. F. Andrews
Keyword(s):  
Longleaf Pines

scholarly journals Twenty Years of Prescribed Burning Influence the Development of Direct-Seeded Longleaf Pine on a Wet Pine Site in Louisiana

2000 ◽  
Vol 24 (2) ◽  
pp. 86-92 ◽  
Author(s):  
James D. Haywood ◽  
Harold E. Grelen
Keyword(s):  
Loblolly Pine ◽  
Prescribed Burning ◽  
Longleaf Pine ◽  
Basal Area ◽  
Pinus Palustris ◽  
Fire Regimes ◽  
The Other ◽  
Direct Seeded ◽  
Longleaf Pines ◽  
Initial Research

Abstract Prescribed burning treatments were applied over a 20 yr period in a completely randomized field study to determine the effects of various fire regimes on vegetation in a direct seeded stand of longleaf pine (Pinus palustris Mill.). Seeding was done in November 1968. The study area was broadcast-burned about 16 months after seeding. The initial research treatments were applied in 1973, and as many as 12 research burns were applied through 1993. Pines were measured in March 1995. Prescribed burning resulted in a greater stocking of longleaf pine (an average of 598 trees/ac) on treated plots than on unburned plots (30 trees/ac). However, on the burned treatments, longleaf pines were significantly smaller (2.5 ft3/tree of stemwood) than were the unburned trees (3.7ft3/tree of stemwood). Half of the treated plots were burned in early March, and the other half were burned in early May. Seasons of burning did not significantly influence longleaf pine stocking. However, use of fire in May resulted in significantly greater basal area (100 ft2/ac) and stemwood production (1,921 ft3/ac) than burning in March (59 ft2/ac and 909 ft3/ac). Fire effectively kept natural loblolly pine (P. taeda L.) seedlings from reaching sapling size, but loblolly saplings and poles dominated the unburned plots (710 trees/ac). When all pines were considered on all treatments, stocking ranged from 467 to 740 trees/ac, but stocking was not significantly different among treatments. The unburned plots had significantly greater total basal area (149 ft2/ac) and stemwood productivity (2,918 ft3/ac) than the burned treatments (82 ft2/ac and 1,459 ft3 /ac). Likewise, hardwoods that were at least 1 in. dbh were more common on unburned p lots (327 stems/ac) than on burned treatments (58 stems/ac). South. J. Appl. For. 24(2):86-92.

Legend of the Longleaf Pines: An Interview with Leon Neel

2004 ◽  
Vol 22 (4) ◽  
pp. 253-261
Author(s):  
D. Morrison
Keyword(s):  
Longleaf Pines

The Longleaf Pines Are Few and Far Between

2016 ◽  
Vol 34 (1) ◽  
pp. 15-16 ◽  
Author(s):  
J. S. Kush
Keyword(s):  
Longleaf Pines

scholarly journals The University of West Florida Campus Ecosystem Study: Age-Diameter and Growth Relationships of Longleaf Pine Using Hurricane-Induced Windthrows

2021 ◽  
Author(s):  
Frank S. Gilliam ◽  
Heather N. Patten ◽  
Sarah K. Rabinowitz
Keyword(s):  
Cross Sections ◽  
Longleaf Pine ◽  
Pinus Palustris ◽  
Wildlife Sanctuary ◽  
Natural Areas ◽  
Second Growth ◽  
Florida Panhandle ◽  
Longleaf Pines ◽  
Southern Georgia ◽  
The University

Abstract The campus of the University of West Florida was constructed among second-growth longleaf pine (Pinus palustris) stands that survived extensive logging in the Florida Panhandle. Previous studies on longleaf pine on the main UWF campus have estimated that 65% of these pines are 75 to 125 years old, with estimates based on a model from old-growth longleaf in southern Georgia. To obtain more accurate age data, one can use an increment corer to collect samples from live trees on site; more accurately, disks can be collected from recently fallen trees. On 16 September 2020, Hurricane Sally impacted UWF as a Category 2 storm, with winds reaching 125 kph. Our study took advantage of longleaf pines blowdowns by Sally to obtain cross-sections for age determinations. Two on-campus natural areas were chosen for sampling: the Edward Ball Nature Trail and the Baars-Firestone Wildlife Sanctuary. For each sampled section, diameter at breast height (DBH) and number of annual rings were recorded. Based on a total of 50 sampled trees, linear regression revealed a highly significant (P<0.00001; r2 =0.84) relationship between DBH and age. Applying this to DBH measures of 2,165 stems on the main campus indicates that the oldest longleaf pines are ~130 years old (mean age = 63.9±0.4 yr), consistent with cessation of historically wide-spread harvesting in the region. Mean age for the Trails site (55.7±1.6 yr) was significantly lower than that of the Sanctuary (66.7±2.0 yr), suggesting that they represented sites of contrasting land-use history. Direction of stem windthrows did not vary between natural areas and was consistent with characteristics of the eyewall of Hurricane Sally with strongest wind gusts moving from a southeast to northwest direction.

Long-term comparison of stem growth of outplanted longleaf pines grown in six kinds of container

2021 ◽  
Author(s):  
Daniel J. Leduc ◽  
Shi-Jean Susana Sung ◽  
James D. Haywood ◽  
Mary Anne Sword Sayer
Keyword(s):  
Stem Growth ◽  
Longleaf Pines

Predicting Inside Bark Diameter for Shortleaf, Loblolly, and Longleaf Pines

1986 ◽  
Vol 10 (4) ◽  
pp. 220-224 ◽  
Author(s):  
Quang V. Cao ◽  
William D. Pepper
Keyword(s):  
Computer Program ◽  
Single Equation ◽  
Relative Height ◽  
Diameter At Breast Height ◽  
Total Height ◽  
Breast Height ◽  
Longleaf Pines ◽  
Physiographic Regions ◽  
Better Than

Abstract Equations are presented for prediction of inside bark diameter from outside bark diameter, outside and inside bark diameter at breast height, relative height, and total height for shortleaf, loblolly, natural longleaf, and planted longleaf pines. These equations performed somewhat better than the three options in Grosenbaugh's (1974) STX computer program. Users can select equations that do or do not require bark measurement at breast height. Results from shortleaf data indicated that a single equation seemed adequate for different physiographic regions. South J. Appl. For. 10:220-224, Nov. 1986.

Comparative Performance of Sand and Longleaf Pines on a Phytophthora Cinnamomi-Infested Sandhill in West Florida

1993 ◽  
Vol 17 (2) ◽  
pp. 90-95 ◽  
Author(s):  
E. L. Barnard ◽  
C. E. Cordell ◽  
S. P. Gilly ◽  
A. G. Kais
Keyword(s):  
Phytophthora Cinnamomi ◽  
Longleaf Pine ◽  
Root Disease ◽  
Comparative Performance ◽  
Resistance To Infection ◽  
Longleaf Pines ◽  
Sand Pine ◽  
Apparent Resistance ◽  
Better Than

Abstract Survival, but not growth, of Choctawhatchee sand pine exceeded that of Ocala sand pine on a Phytophthora cinnamomi-infested sandhill in west Florida. However, both varieties exhibited relatively high levels of susceptibility to root disease and mortality caused by P. cinnamomi. Longleaf pine survived significantly better than either variety of sand pine and exhibited an apparent resistance to infection by P. cinnamomi. South. J. Appl. For. 17(2):90-95.

CEPA in Sulfuric Acid Paste Increases Oleoresin Yields¹

1984 ◽  
Vol 8 (3) ◽  
pp. 168-172 ◽  
Author(s):  
Robert D. McReynolds ◽  
Susan V. Kossuth
Keyword(s):  
Sulfuric Acid ◽  
Acid Concentration ◽  
Sulfuric Acid Concentration ◽  
Pinus Elliottii ◽  
Chemical Additives ◽  
Commercial Formulation ◽  
Test Chemical ◽  
Growing Seasons ◽  
Naval Stores ◽  
Longleaf Pines

Abstract During 2 growing seasons, slash (Pinus elliottii Engelm.) and longleaf (P. palustris Mill.)pines were worked for naval stores to test chemical additives to sulfuric acid pastes. A 53% acid paste is used commercially to stimulate oleoresin flow. Only 2-chloroethylphosphonic acid (CEPA) increased gum yields significantly. Maximum yields were obtained by lowering the sulfuric acid concentration to 25% and adding CEPA at 2.5 or 5.0%. Yields were increased up to 36% in 21- to 23-year-old slash pines (25% sulfuric acid plus 5.0% CEPA) and 65% in 60-year-old longleaf pines (25% sulfuric acid plus 2.5% CEPA). In treatments with CEPA and no sulfuric acid, yields increased with increasing CEPA concentration, but all were at least 22% less than that from the commercial paste. Near-maximum yields were obtained by spraying to runoff with 21.6% CEPA (as the full-strength commercial formulation of Ethrel®) over the smoothed bark surface.

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