Early Growth Reductions in Short Rotation Loblolly and Slash Pine in Central Louisiana

1994 ◽  
Vol 18 (1) ◽  
pp. 35-39 ◽  
Author(s):  
James D. Haywood
Keyword(s):  
Pinus Taeda ◽  
Loblolly Pine ◽  
Tree Growth ◽  
Early Growth ◽  
Height Growth ◽  
Slash Pine ◽  
Logging Damage ◽  
Growing Seasons ◽  
Short Rotation ◽  
Pinus Taeda L

Abstract Twenty-two-year-old loblolly (Pinus taeda L.) and slash pine (P. elliottii Engelm. var. elliottii) research plantations were clearcut-harvested and replanted with the same species. The objective was to compare tree growth between the two rotations. Seven growing seasons into the second rotation, loblolly and slash pines averaged an 8- and 3-ft reduction in total height, respectively. Height growth of loblolly pine was especially reduced on replanted plots that had been harrowed or harrowed and bedded 22 yr earlier, but the reduction in growth occurred on the burn-only (check)plots as well. The reasons for these growth declines were not identified, but it was unlikely that differences between rotations in rainfall patterns, logging damage, or competition were responsible. South. J. Appl. For. 18(1):35-39.

scholarly journals Four Site-Preparation Techniques for Regenerating Pine-Hardwood Mixtures in the Piedmont

1997 ◽  
Vol 21 (3) ◽  
pp. 116-122 ◽  
Author(s):  
Thomas A. Waldrop
Keyword(s):  
Pinus Taeda ◽  
Loblolly Pine ◽  
Height Growth ◽  
Site Preparation ◽  
Site Conditions ◽  
Growing Seasons ◽  
Southern Appalachian ◽  
Medium Quality ◽  
Pinus Taeda L ◽  
Preparation Techniques

Abstract Four variations of the fell-and-burn technique, a system developed to produce mixed pine-hardwood stands in the Southern Appalachian Mountains, were compared in the Piedmont region. All variations of this technique successfully improved the commercial value of low-quality hardwood stands by introducing a pine component. After six growing seasons, loblolly pine (Pinus taeda L.) occupied the dominant crown position and oaks the codominant position in fell-and-burn treated stands on poor to medium quality sites. The precise timing of felling residual stems, as prescribed by the fell-and-burn technique, may be flexible because winter and spring felling produced similar results. Although summer site preparation burns reduced hardwood height growth by reducing the length of the first growing season, they did not improve pine survival or growth. Pines were as tall as hardwoods within four growing seasons in burned plots and within six growing seasons in unburned plots. Additional research is needed to determine the level or intensity of site preparation needed to establish pine-hardwood mixtures over a range of site conditions. South. J. Appl. For. 21(3):116-122.

Effect of Logging Equipment Traffic On Soil Density and Growth and Survival of Young Loblolly Pine

1984 ◽  
Vol 8 (2) ◽  
pp. 109-112 ◽  
Author(s):  
B. Graeme Lockaby ◽  
Clyde G. Vidrine
Keyword(s):  
Pinus Taeda ◽  
Loblolly Pine ◽  
Tree Growth ◽  
Soil Property ◽  
Height Growth ◽  
Soil Density ◽  
Growth And Survival ◽  
Pinus Taeda L ◽  
Root Collar ◽  
Density Results

Abstract Soil bulk densities, determined on plots representing a gradient of harvesting traffic, indicated that compaction was an average of 12 percent greater on former logging decks and primary skid roads as compared to nontrafficked areas. Penetrometer readings supported the bulk density results and, in addition, showed increased compaction on secondary roads and road borders as compared to relatively undisturbed areas. This compaction was reflected in height growth reductions of 39 to 59 percent in five-year old loblolly pine (Pinus taeda L.) on decks and primary roads. Number of pine per acre was reduced by 88 to 91 percent on the same areas. Root collar diameters also decreased but were not significantly different from those on relatively undisturbed plots. These results are discussed in relation to the 1 percent proportion of the harvested area involved in soil property impacts and reduced tree growth.

Performance of Unthinned Loblolly and Slash Pine Plantations on Three Sites in South Carolina

1977 ◽  
Vol 1 (4) ◽  
pp. 8-10
Author(s):  
D. H. Van Lear ◽  
N. B. Goebel ◽  
J. G. Williams
Keyword(s):  
South Carolina ◽  
Pinus Taeda ◽  
Loblolly Pine ◽  
Slash Pine ◽  
The Other ◽  
Fusiform Rust ◽  
Growth And Survival ◽  
Growing Seasons ◽  
Pinus Taeda L ◽  
Region Growth

Abstract The performance of adjacent unthinned plantations of loblolly (Pinus taeda L.) and slash pine (P. elliottii Engelm.) on three sites in South Carolina was evaluated after 16 growing seasons. Sites ranged from a noneroded Piedmont soil to an excessively drained sandy soil of the Sandhills physiographic region. Growth and survival varied widely among sites, with greatest productivity occurring in the Piedmont and the lowest in the Congaree Sandhills. Despite the droughty nature of the latter site, survival after 16 growing seasons was over 80 percent for both species. On a volume basis, loblolly pine outperformed slash pine at the upper Pidemont and Aiken Plateau sites, while slash pine was superior on the dry Sandhills site. Incidence of fusiform rust was much higher for both species at the Aiken Plateau than at the other sites.

scholarly journals Herbicide Release of 3-Year-Old Loblolly Pine from Competing Hardwoods in Arkansas

1996 ◽  
Vol 20 (3) ◽  
pp. 121-126 ◽  
Author(s):  
Harold E. Quicke ◽  
Glenn R. Glover ◽  
Dwight K. Lauer
Keyword(s):  
Pinus Taeda ◽  
Loblolly Pine ◽  
Basal Area ◽  
Late Summer ◽  
Height Growth ◽  
Response To Treatment ◽  
Growing Seasons ◽  
Hardwood Species ◽  
Pinus Taeda L ◽  
Area Response

Abstract Objectives were to identify effective late-summer and spring herbicide treatments for the release of 3-yr-old loblolly pine (Pinus taeda L.) from competing hardwoods and to quantify longer term pine growth response to varying levels of hardwood control. Effective late-summer treatments included imazapyr at 1.0 and 0.5 lb ae/ac, imazapyr at 0.5 lb ae/ac in combination with glyphosate at 1.125 lb ae/ac, and imazapyr at 0.25 lb ae/ac with surfactant. The best spring treatment was hexazinone at 2.0 lb ai/ac. Although spring imazapyr treatments stunted pine height growth 2 growing seasons after treatment, height growth had recovered by age 10. Late-summer imazapyr treatments provided better hardwood control than spring treatments. Although check plot hardwood basal area averaged 9 ft2/ac, and winged elm (a species known to be tolerant to imazapyr) was the predominant hardwood species at treatment, pine basal area response to treatment ranged from 6 to 27 ft2/ac at age 10. Pine response increased with imazapyr rate for late-summer treatments. Adding hexazinone to imazapyr did not improve hardwood control, and no benefits were observed from adding metsulfuron to either glyphosate or hexazinone. South. J. Appl. For. 20(3): 121-126.

Growth and Development of Loblolly and Slash Pines Direct-Seeded or Planted on a Cutover Site

1981 ◽  
Vol 5 (3) ◽  
pp. 115-119 ◽  
Author(s):  
Thomas E. Campbell
Keyword(s):  
Pinus Taeda ◽  
Loblolly Pine ◽  
Growth And Development ◽  
Height Growth ◽  
Site Preparation ◽  
Slash Pine ◽  
Direct Seeding ◽  
Direct Seeded ◽  
Pinus Taeda L

Abstract After 15 years, loblolly pine (Pinus taeda L.) planted on a cutover site yielded more volume than four of six direct-seeding treatments. Height growth of seeded loblolly responded to site treatment, but method of site preparation had little influence. Regeneration technique did not affect slash pine (P. elliottii var. elliottii Engelm.)

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.

Eight-Year Performance of Loblolly Pine with Pisolithus Ectomycorrhizae on a Good-Quality Forest Site

1988 ◽  
Vol 12 (4) ◽  
pp. 275-280 ◽  
Author(s):  
Donald H. Marx ◽  
Charles E. Cordell ◽  
Alexander Clark
Keyword(s):  
Pinus Taeda ◽  
Loblolly Pine ◽  
Basal Area ◽  
Site Index ◽  
Forest Site ◽  
Water Deficits ◽  
Growing Seasons ◽  
Area Growth ◽  
Pinus Taeda L ◽  
Crown Closure

Abstract Loblolly pine (Pinus taeda L) seedlings with different initial amounts of Pisolithus tinctorius (Pt) ectomycorrhizae (Pt index 0, 27, 46, 68, or 88) were planted on a good-quality site (site index 90 ft at age 50) in southwest Georgia. After 8 years and crown closure, trees with Pt indices of 88 and 68 had significantly better survival and greater heights, diameters, volumes, and green weights per tree and per ac than nursery-run, control seedlings (Pt index 0). Volume and weight yields per ac were over 50% greater and volume and weight yields per tree were over 20% greater for trees in the Pt index 88 treatment than they were for control trees. A special statistical analysis indicated that average per ac volume was positively correlated with initial Pt index values larger than 58. Tree-ring analyses showed that trees with a Pt index of 88 had significantly greater annual basal area growth than controls during growing seasons with water deficits of 8 to 13 in. Annual growth did not differ when water deficits were greater or less than these amounts. After 8 years, Pt basidiocarps were present throughout the study site. Mycorrhizal treatment integrity may have been lost after 3 or 4 years. South. J. Appl. For. 12(4):275-280

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 Washing Roots Reduces Vigor of Loblolly Pine Seedlings

2001 ◽  
Vol 25 (1) ◽  
pp. 25-30
Author(s):  
William A. Carey ◽  
David B. South ◽  
M. Williford ◽  
J. Britt
Keyword(s):  
Pinus Taeda ◽  
Loblolly Pine ◽  
Fine Roots ◽  
Height Growth ◽  
Initial Height ◽  
Pine Seedlings ◽  
Loam Soil ◽  
Bud Growth ◽  
Pinus Taeda L ◽  
Growth Of Seedlings

Abstract Loblolly pine (Pinus taeda L.) seedlings were lifted from two nurseries in Georgia, and the roots were washed using equipment built for that purpose. Seedlings then received two levels of storage and were outplanted not far from the nursery of origin (one loam soil and one sandy soil). Immediately after washing, root weights and the length of fine roots did not differ among wash treatments from either nursery. Survival was excellent for all treatments on the loam soil, but a single wash reduced survival by 5 to 10% when seedlings were planted in sand. Washing slowed the rate of budbreak and early height growth. Bud growth of seedlings planted in a stress pit (containing sand) was correlated with both root growth 1 month after planting (r = 0.36,P = 0.0003) and survival 2 months after planting (r =0.62,P = 0.01). Among seedlings outplanted on a sandy site, initial height growth also correlated with survival (r = 0.49,P = 0.007). South. J. Appl. For. 25(1):25–30.

Effect of nursery conditioning treatments and fall fertilization on survival and early growth of Pinus taeda seedlings in Alabama, U.S.A.

2002 ◽  
Vol 32 (7) ◽  
pp. 1171-1179 ◽  
Author(s):  
David B South ◽  
D GM Donald
Keyword(s):  
Pinus Taeda ◽  
Loblolly Pine ◽  
Experimental Error ◽  
Early Growth ◽  
Cool Storage ◽  
Reduced Height ◽  
Error Terms ◽  
Bare Root ◽  
Pinus Taeda L

Four seedling conditioning treatments and four fall fertilization treatments were applied to loblolly pine (Pinus taeda L.) seedlings in a bare-root nursery in Alabama. Three conditioning treatments involved undercutting plus root wrenching (two, four, and six times), and a fourth treatment included top-pruning (three times) and no undercutting. Fertilizer treatments consisted of (i) control, (ii) 150 kg/ha of N, (iii) 150 kg/ha of N plus 150 kg/ha of P, and (iv) 150 kg/ha of K. On two sites, seedlings were planted in November, and an equal number were placed in cool storage and planted 6 weeks later in mid-December. Results 5 years after outplanting were generally similar for both sites; however, experimental error terms were higher on the sandy site. As a result, conditioning and fertilizer treatments had a statistically significant effect on volume per hectare at the loamy site but not at the sandy site. Volume per hectare was enhanced by undercutting in August followed by two root wrenchings and fall fertilization with N plus P. Storing seedlings reduced height, groundline diameter, and volume per hectare at both sites and reduced survival at the loamy site. Survival of both freshly planted and stored seedlings was greater than 71% at both sites.

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