Site preparation influences on below ground competing vegetation and loblolly pine seedling growth

New Forests ◽  
1988 ◽  
Vol 2 (2) ◽  
pp. 131-138 ◽  
Author(s):  
B. G. Lockaby ◽  
J. M. Slay ◽  
J. C. Adams ◽  
C. G. Vidrine
Keyword(s):  
Seedling Growth ◽  
Loblolly Pine ◽  
Site Preparation ◽  
Competing Vegetation ◽  
Below Ground

scholarly journals Soil Changes and Tree Seedling Response Associated with Site Preparation in Northern Idaho

1997 ◽  
Vol 12 (3) ◽  
pp. 81-88 ◽  
Author(s):  
Deborah S. Page-Dumroese ◽  
Martin F. Jurgensen ◽  
Alan E. Harvey ◽  
Russell T. Graham ◽  
Jonalea R. Tonn
Keyword(s):  
Seedling Growth ◽  
Soil Nutrient ◽  
Soil Surface ◽  
Nutrient Status ◽  
Site Preparation ◽  
Pinus Monticola ◽  
Growth Responses ◽  
Tree Seedling ◽  
Competing Vegetation ◽  
Northern Idaho

Abstract Conifer regeneration in western North America is often hampered by low soil moisture, poor soil nutrient status, and competing vegetation. Three site preparation techniques were evaluated at two different elevations in northern Idaho as potential remedies for these problems: (1) soil mounds without control of competing vegetation, (2) soil mounds with herbicidal control of competing vegetation, and (3) scalping (removal of soil surface organic horizons and mineral topsoil). Treatments were evaluated for effects on soil nutrient levels, soil physical properties, and the growth of Douglas-fir (Pseudotsuga menziesii var. glauca) and western white pine (Pinus monticola) seedlings. Both species generally grew best when planted in the mounded treatment with competing vegetation removed and worst after scalping. Mounding with herbicide application resulted in the lowest bulk density, best seedling growth, and increased water availability. Mounding may be a viable site preparation method in the Inland Northwest on less productive sites that have severe competition. Scalping, especially when competition was not a problem, generally did not produce favorable seedling growth responses. Scalping may also reduce longer term seedling growth by removing surface organic matter. West. J. Appl. For. 12(3):81-88.

Effects of Site Preparation on Soil Physical Properties, Growth of Loblolly Pine, and Competing Vegetation

1987 ◽  
Vol 11 (2) ◽  
pp. 83-86 ◽  
Author(s):  
J. Melinda Slay ◽  
B. G. Lockaby ◽  
J. C. Adams ◽  
C. G. Vidrine
Keyword(s):  
Loblolly Pine ◽  
Seedling Survival ◽  
Dry Weight ◽  
Site Preparation ◽  
Competing Vegetation ◽  
Before And After ◽  
Ground Line Diameter ◽  
Pinus Taeda L ◽  
One Year ◽  
North Louisiana

Abstract Competing vegetation, seedling survival, and growth of loblolly pine (Pinus taeda L.) were evaluated one year following four site-preparation techniques in north Louisiana. The treatments were chop and burn, windrow, fuelwood harvest, and fuelwood harvest followed by a herbicide. Physicalsoil properties were evaluated before and after treatment application. The study was designed as a randomized complete block and was installed on a Gore silt loam (Vertic Paleudalf) soil. Windrowing significantly increased surface bulk densities. Fuelwood had significantly higher bulk densityvalues for subsurface samples. In comparisons among treatments, surface bulk densities for the windrow treatment were significantly higher than both of the fuelwood treatments. The fuelwood treatment was significantly higher in competing vegetation while the fuelwood followed by a herbicidetreatment was significantly lowest. The fuelwood followed by a herbicide ranked significantly higher in seedling height, ground line diameter, and volume. Seedling growth was inversely related to competing vegetation dry weight. There were no significant differences among treatments in seedlingsurvival. South. J. Appl. For. 11(2):83-86.

Soil change and loblolly pine (Pinus taeda) seedling growth following site preparation tillage in the Upper Coastal Plain of the southeastern United States

2007 ◽  
Vol 242 (2-3) ◽  
pp. 558-568 ◽  
Author(s):  
M. Chad Lincoln ◽  
Rodney E. Will ◽  
Lawrence A. Morris ◽  
Emily A. Carter ◽  
Daniel Markewitz ◽  
...  
Keyword(s):  
United States ◽  
Pinus Taeda ◽  
Seedling Growth ◽  
Loblolly Pine ◽  
Coastal Plain ◽  
Southeastern United States ◽  
Site Preparation

Effects of Ripping and Herbicide Site Preparation Treatments on Loblolly Pine Seedling Growth and Survival

1986 ◽  
Vol 10 (4) ◽  
pp. 253-257 ◽  
Author(s):  
R. F. Wittwer ◽  
P. M. Dougherty ◽  
D. Cosby
Keyword(s):  
Loblolly Pine ◽  
Substantial Reduction ◽  
Site Preparation ◽  
Growth And Survival ◽  
Competing Vegetation ◽  
Growing Seasons ◽  
Herbicide Treatment ◽  
Ouachita Mountain ◽  
Ground Line Diameter ◽  
Pinus Taeda L

Abstract Herbicide (1 lb ai/acre hexazinone as Velpar® L) and mechanical (ripping) site preparation treatments increased height and diameter of loblolly pine (Pinus taeda L.) seedlings planted on a Ouachita Mountain site in southeastern Oklahoma. Total height after two growing seasons was increased approximately 10% by ripping, 23% by the herbicide treatment, and 49% by the combined herbicide and ripping treatment, as compared with the check treatment. Ground-line diameter was increased 20%, 55%, and 83% respectively by these treatments. Reduction of competing vegetation and increased soil moisture were related to site preparation treatments. The combined ripping and herbicide treatment was the most effective treatment in conserving soil water and in reduction of competing biomass. Competing vegetation biomass was reduced 75% in the first year by the combined ripping-herbicide treatment, and a substantial reduction in competing biomass was still evident at the end of the second growing season. South. J. Appl. For. 10:253-257, Nov. 1986.

Yield Relationships in Unthinned Loblolly Pine Plantations on Cutover, Site-Prepared Lands

1985 ◽  
Vol 9 (2) ◽  
pp. 84-91 ◽  
Author(s):  
Harold E. Burkhart ◽  
Deborah C. Cloeren ◽  
Ralph L. Amateis
Keyword(s):  
Loblolly Pine ◽  
Coastal Plain ◽  
Measurement Data ◽  
Site Index ◽  
Site Preparation ◽  
Analysis Of Covariance ◽  
Permanent Plots ◽  
Average Height ◽  
Competing Vegetation ◽  
Physiographic Regions

Abstract Data were collected in unthinned loblolly pine (Pinus taeda) plantations on cutover, site-prepared lands across much of the southern United States. Initial measurement data from these permanent plots were used to (1) develop regression relationships between yield of the planted loblolly pine and measurements of the planted pine and competing vegetation, and (2) assess relationships between yield and site preparation methods and physiographic regions (Coastal Plain and Piedmont). These analyses showed that yield of the planted pine component could be predicted adequately from age, average height of dominant and codominant trees, and number of surviving planted trees per unit area. Measurements on the competing vegetation did not significantly reduce the error sum of squares after accounting for the planted-pine variables. An analysis of covariance showed that mean yields (after adjusting for the effects of plantation age, site index, and number of surviving trees) were not significantly different for site preparation classes or physiographic regions. Further analyses showed that survival relationships were similar for the physiographic regions and site preparation classes included. Although the height-age relationships for anamorphic site index curve construction were significantly different for the Coastal Plain and Piedmont, there were no significant differences between site preparation classes within the regions.1

scholarly journals Bedding and Fertilization Ameliorate Effects of Designated Wet-Weather Skid Trails after Four Years for Loblolly Pine (Pinus taeda) Plantations

1998 ◽  
Vol 22 (4) ◽  
pp. 222-226 ◽  
Author(s):  
W. Michael Aust ◽  
James A. Burger ◽  
William H. McKee ◽  
Gregory A. Scheerer ◽  
Mark D. Tippett
Keyword(s):  
Pinus Taeda ◽  
Loblolly Pine ◽  
Water Movement ◽  
Block Design ◽  
Site Preparation ◽  
Site Productivity ◽  
Mechanical Site Preparation ◽  
Wet Weather ◽  
Four Levels ◽  
Study Sites

Abstract Wet-weather harvesting operations on wet pine fiats can cause soil disturbances that may reduce long-term site productivity. Site preparation and fertilization are often recommended as ameliorative practices for such disturbances, but few studies have actually quantified their effects on restoration. The purposes of this study were to quantify the effects of wet-weather harvest traffic in designated skid trails on soil properties and loblolly pine (Pinus taeda) growth, and to evaluate the ameliorative effects of site preparation. Study sites were established on wet pine flats of the lower Coastal Plain within the Francis Marion National Forest (Berkeley County, SC). Treatments were arranged in a split-split plot within a randomized complete block design. Treatments were two levels of traffic (nontrafficked, trafficked), four levels of mechanical site preparation (none, disking, bedding, disking + bedding), and two levels of fertilization (none, 337 kg /ha of 10-10-10 fertilizer). initially, the trafficking increased soil bulk densities and reduced soil water movement and subsequent growth of loblolly pine (years 1 and 2). Bedding combined with fertilization restored site productivity to non trafficked levels within 4 yr, but disking or fertilization treatments alone were not effective at ameliorating the traffic effects. The effectiveness of the bedding and fertilization treatments for amelioration of traffic effects was probably facilitated by the relatively small area of disturbed skid trails (<10%) found on these sites. Areas having more severe disturbance or higher percentages of disturbance might not be ameliorated as rapidly. South. J. Appl. For. 22(4):222-226.

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.

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