Growth and water potential of j-rooted loblolly and eastern white pine seedlings over three growing seasons

New Forests ◽  
1990 ◽  
Vol 4 (2) ◽  
pp. 147-153 ◽  
Author(s):  
John R. Seiler ◽  
David J. Paganelli ◽  
Ben H. Cazell
Keyword(s):  
Water Potential ◽  
White Pine ◽  
Eastern White Pine ◽  
Growing Seasons ◽  
Pine Seedlings

Performance of Eastern White Pine and Competing Vegetation Following Two Methods of Stand Conversion

1977 ◽  
Vol 1 (3) ◽  
pp. 7-9 ◽  
Author(s):  
Phillip C. Freeman ◽  
D. H. Van Lear
Keyword(s):  
South Carolina ◽  
Average Diameter ◽  
Treatment Combination ◽  
White Pine ◽  
Eastern White Pine ◽  
Growth And Survival ◽  
Growing Seasons ◽  
Pine Seedlings ◽  
Stand Conversion ◽  
Sprout Growth

Abstract Growth and survival of eastern white pine (Pinus strobus L.) seedlings planted beneath a residual hardwood overstory were compared for two growing seasons with seedlings in a clearcut area in the Piedmont of South Carolina. After two growing seasons, average diameter of white pine seedlings was significantly greater in the clearcut area. Seedling diameters in the clearcut were further increased by herbicide spraying, but not in the residual overstory plots where overstory competition inhibited sprout growth. Neither height growth nor survival (49 percent overall) of white pine seedlings was influenced by any treatment combination.

Internal and external control of net photosynthesis and stomatal conductance of mature eastern white pine (Pinusstrobus)

1992 ◽  
Vol 22 (9) ◽  
pp. 1387-1394 ◽  
Author(s):  
C.A. Maier ◽  
R.O. Teskey
Keyword(s):  
Internal Control ◽  
Leaf Gas Exchange ◽  
Net Photosynthesis ◽  
Leaf Conductance ◽  
External Control ◽  
White Pine ◽  
Eastern White Pine ◽  
Pressure Potential ◽  
Growing Seasons ◽  
Xylem Pressure Potential

Leaf gas exchange and water relations were monitored in the upper canopy of two 25 m tall eastern white pine (Pinusstrobus L.) trees over two consecutive growing seasons (1986 and 1987). Examination of the seasonal and diurnal patterns of net photosynthesis and leaf conductance showed that both internal and external (environmental) factors were controlling net photosynthesis and leaf conductance. Internal control was indicated by a rapid increase and then decrease in the photosynthetic capacity of 1-year-old foliage during the development and maturation of current-year foliage, which was independent of environmental conditions. Large differences in net photosynthesis were observed between growing seasons due to seasonal differences in soil water availability, as indexed by predawn xylem pressure potential. Water stress reduced the maximum rate of net photosynthesis and altered the response of net photosynthesis and leaf conductance to absolute humidity deficit.

scholarly journals Budset and Growth of Eastern White Pine Following Application of 6-Benzylaminopurine to Seedlings Fertilized with Different Levels of Nitrogen

1988 ◽  
Vol 6 (2) ◽  
pp. 42-45
Author(s):  
L. Eric Hinesley ◽  
Robert D. Wright
Keyword(s):  
Irrigation Water ◽  
Pinus Strobus ◽  
Dry Weight ◽  
Growing Season ◽  
First Year ◽  
White Pine ◽  
Eastern White Pine ◽  
Growing Seasons ◽  
One Year ◽  
Different Levels

Eastern white pine (Pinus strobus L.) were potted and solution fed once weekly during 2 growing seasons with 5 levels of N in the irrigation water: 50, 100, 200, 300 and 400 ppm. Leaders were treated with 750 ppm 6-benzylaminopurine (BA) in late June of the first year. The higher N levels resulted in greater stem diameter, greater foliage dry weight, longer and heavier needle fascicles, better foliage color, greater budset after application of BA, and more and longer branches on the BA-treated leader the second growing season. BA should be applied to trees with N concentration ≥ 1.5% in one-year-old foliage.

Pathogenicity of three fungal associates of Hylobiuspales and Pissodesnemorensis (Coleoptera: Curculionidae) to eastern white pine

1992 ◽  
Vol 22 (9) ◽  
pp. 1438-1440 ◽  
Author(s):  
R.J. Nevill ◽  
S.A. Alexander
Keyword(s):  
The Other ◽  
Lesion Length ◽  
Malt Extract ◽  
Perfect State ◽  
White Pine ◽  
Eastern White Pine ◽  
Pine Seedlings ◽  
Blue Stain Fungi ◽  
Blue Stain ◽  
Fungal Associates

The pathogenicity of three fungal associates of the pine reproduction weevils, Hylobiuspales (Hbst) and Pissodesnemorensis Germar, to eastern white pine (Pinusstrobus L.) was investigated. Three-year-old eastern white pine seedlings were inoculated with isolates of Leptographiumprocerum (Kendr.) Wingf., Ophiostomapiceae (Munch) Sydow & Sydow, or a Graphium species that produced no perfect state. The inoculations were made by wounding the seedlings and inserting a block of malt extract agar colonized by the respective fungi into the wounds. After 3 months, the wounds of seedlings inoculated with L. procerum were resinous and there were significantly longer lesions in the bark and sapwood than in seedlings inoculated with the other fungi. Based on reisolation from the xylem, both L. procerum and O. piceae colonized the sapwood beyond lesions or any visual discoloration, but the Graphium species did not. These results confirm the pathogenicity of L. procerum and O. piceae and suggests that lesion length alone does not fully characterize colonization by some blue stain fungi.

Growth and physiological response of eastern white pine seedlings to partial cutting and site preparation

2007 ◽  
Vol 240 (1-3) ◽  
pp. 151-164 ◽  
Author(s):  
Jean-François Boucher ◽  
Pierre Y. Bernier ◽  
Hank A. Margolis ◽  
Alison D. Munson
Keyword(s):  
Physiological Response ◽  
Site Preparation ◽  
White Pine ◽  
Eastern White Pine ◽  
Partial Cutting ◽  
Pine Seedlings

scholarly journals Growth of Eastern White Pine (Pinus strobus L.) Related to Forest Floor Consumption by Prescribed Fire in the Southern Appalachians

2002 ◽  
Vol 26 (1) ◽  
pp. 18-25 ◽  
Author(s):  
Katherine J. Elliott ◽  
James M. Vose ◽  
Barton D. Clinton
Keyword(s):  
Forest Floor ◽  
Fire Severity ◽  
The Other ◽  
Size Difference ◽  
Southern Appalachians ◽  
White Pine ◽  
Eastern White Pine ◽  
Growing Seasons ◽  
Humus Layer

Abstract Chainsaw felling, burning, and planting of eastern white pine (Pinus strobusL.) have been prescribed on degraded pine/hardwood stands in the Southern Appalachians to improve overstory composition and productivity. The desired future condition of the overstory is a productive pine/hardwood mixture, with white pine, which is resistant to southern pine beetle (Dendroctonus frontalis), as the dominant pine. We evaluated the growth of white pine planted after fell-and-burn treatments through eight growing seasons after planting on three sites that differed in their fire characteristics and carbon and nitrogen losses. The three sites (JE, JW, and DD) differed in heat penetration and forest floor consumption. Although very little consumption of the Oe+Oa humus layer occurred during burning, consumption of the Oi litter layer was 94%, 94%, and 63% at JE, JW, and DD, respectively. Corresponding to the forest floor layer consumption (Oi and Oe+Oa combined), 46% of forest floor N was lost at JE, 45% of forest floor N was lost at JW, and less than 0.1% of the forest floor N was lost at DD. Biomass and density of woody competitor species were not significantly related to white pine size or growth. By the eighth growing season, no differences in white pine size or growth were detected between JE and JW, but DD had significantly smaller white pine trees. The size difference between DD and the other two sites was attributed to the replanting of seedlings at DD in 1992. However, relative growth rate (RGR) was significantly higher on DD in 1998 than the other two sites. Eight growing seasons after planting, white pine growth was negatively related to percent Oi layer consumed on the JE and JW sites. We also found significant relationships between white pine RGR and percent Oi consumed using data from all three sites. Although fire severity had a long-term effect on pine growth, fire severity was considered low overall on these sites because there were limited losses from the forest floor Oe+Oa layer. However, white pine increment and RGR were significantly related to percent forest floor Oi mass and N loss. This loss of site N capital could have a significant negative effect on growth of planted white pine over the long term. South. J. Appl. For. 26(1):18–25.

scholarly journals Influence of herbaceous and woody competition on white pine regeneration in a uniform shelterwood

2011 ◽  
Vol 87 (05) ◽  
pp. 653-668 ◽  
Author(s):  
Douglas Pitt ◽  
Andrée Morneault ◽  
William Parker ◽  
Len Lanteigne ◽  
Michael Hoepting ◽  
...  
Keyword(s):  
Maximum Growth ◽  
Deciduous Trees ◽  
White Pine ◽  
Herbaceous Vegetation ◽  
Vegetation Control ◽  
Growing Seasons ◽  
Light Levels ◽  
Pine Seedlings ◽  
Pine Regeneration ◽  
Survival And Growth

We investigated the effects of herbaceous and woody vegetation control on the survival and growth of planted and natural eastern white pine (Pinus strobus L.) seedlings through six growing seasons following a uniform shelterwood regeneration harvest on two independent sites. Subsequent to chain scarification, white pine seedlings were planted at 2-m spacing, augmenting natural regeneration (full stocking and >3000 seedlings per ha). Herbaceous vegetation control involved the suppression of grasses, forbs, ferns, and low shrubs, and was maintained for zero, two, or four growing seasons after planting. Woody control involved the removal of all tall shrubs and deciduous trees, and was conducted at the time of planting, at the end of the second or fifth growing seasons, or not at all. White pine seedling growth responded positively to increased duration of herbaceous vegetation control and negatively to delayed woody control. Maximum growth was not realized unless both types of vegetation were suppressed. During the first six growing seasons, the height growth of planted pine was more than twice that of naturally regenerating pine, regardless of tending regime. The study suggests that successful white pine regeneration may be achieved by thinning from below to allow 50% to 60% of full sunlight in the understory, followed by the proactive, early suppression of woody and herbaceous vegetation to maintain optimum light levels and reduce competition for soil moisture and nutrients.

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