Simulated root freezing in the nursery: effects on the growth and physiology of containerized boreal conifer seedlings after outplanting

2002 ◽  
Vol 32 (4) ◽  
pp. 605-615 ◽  
Author(s):  
Daniel Dumais ◽  
Carole Coursolle ◽  
Francine J Bigras ◽  
Hank A Margolis
Keyword(s):  
Water Potential ◽  
Black Spruce ◽  
Nitrogen Concentration ◽  
Net Photosynthesis ◽  
White Spruce ◽  
Jack Pine ◽  
Freezing Injury ◽  
Root Damage ◽  
Height Increment ◽  
Seedling Mortality

The effects of induced root freezing injury on 2+0 white spruce (Picea glauca (Moench) Voss), black spruce (Picea mariana (Mill.) BSP), and jack pine (Pinus banksiana Lamb.) seedlings were studied. Hardened seedlings were exposed to freezing during the fall and cold stored until planting. Seedlings were planted in spring on two field sites with different soil moisture levels (wet or dry). Seedling morphology and physiology were measured periodically during the first growing season, and mortality was evaluated at the end of the season. With the exception of June measurements on the wet site, where daytime water potential fell as low as –2.0 MPa, root damage did not seriously affect shoot water potential. Generally, stomatal conductance decreased with increasing root damage. Net photosynthesis on both sites decreased between 22 and 39% with increasing root damage. Root damage did not affect the ratio of intercellular to ambient CO2 concentration. As well, reductions in the nitrogen concentration of current-year foliage with increasing root damage were observed, suggesting that the observed reductions in net photosynthesis were caused by nonstomatal factors. Root growth was greater on the wet site than on the dry site, particularly between August and October, when mean soil minimum temperatures were lower on the dry site. On both sites, aerial dry mass was only slightly affected by root damage in July and August, but the effect of damage became more pronounced in October on the wet site. Black spruce and white spruce seedling mortality began being affected when approximately 50% of the root systems were damaged, while jack pine mortality was affected starting at 40% damage. Root damage levels of 50% caused 2.0 and 1.5 cm reductions in annual height increment of white spruce and black spruce, respectively, and 40% damage caused a reduction of 1.0 cm in annual height increment of jack pine.

scholarly journals Cold hardiness of white spruce, black spruce, jack pine, and lodgepole pine needles during dehardening

2017 ◽  
Vol 47 (8) ◽  
pp. 1116-1122 ◽  
Author(s):  
Rongzhou Man ◽  
Pengxin Lu ◽  
Qing-Lai Dang
Keyword(s):  
Picea Glauca ◽  
Pinus Banksiana ◽  
Cold Hardiness ◽  
Black Spruce ◽  
Lodgepole Pine ◽  
White Spruce ◽  
Visual Assessment ◽  
Jack Pine ◽  
Pine Needles ◽  
Late Winter

Conifer winter damage results primarily from loss of cold hardiness during unseasonably warm days in late winter and early spring, and such damage may increase in frequency and severity under a warming climate. In this study, the dehardening dynamics of lodgepole pine (Pinus contorta Dougl. ex. Loud), jack pine (Pinus banksiana Lamb.), white spruce (Picea glauca (Moench) Voss), and black spruce (Picea mariana (Mill.) B.S.P.) were examined in relation to thermal accumulation during artificial dehardening in winter (December) and spring (March) using relative electrolyte leakage and visual assessment of pine needles and spruce shoots. Results indicated that all four species dehardened at a similar rate and to a similar extent, despite considerably different thermal accumulation requirements. Spring dehardening was comparatively faster, with black spruce slightly hardier than the other conifers at the late stage of spring dehardening. The difference, however, was relatively small and did not afford black spruce significant protection during seedling freezing tests prior to budbreak in late March and early May. The dehardening curves and models developed in this study may serve as a tool to predict cold hardiness by temperature and to understand the potential risks of conifer cold injury during warming–freezing events prior to budbreak.

scholarly journals Deep Planting Has No Short- or Long-Term Effect on the Survival and Growth of White Spruce, Black Spruce, and Jack Pine

2011 ◽  
Vol 28 (3) ◽  
pp. 146-151 ◽  
Author(s):  
Alain Paquette ◽  
Jean-Pierre Girard ◽  
Denis Walsh
Keyword(s):  
Black Spruce ◽  
White Spruce ◽  
Jack Pine ◽  
Eastern Canada ◽  
Planting Depth ◽  
Early Results ◽  
Significant Difference ◽  
Negative Effect ◽  
Tukey Honestly Significant Difference

Abstract Although studies in the past have reported that the deeper planting of conifers has no effect on seedling performance, most planting guidelines in use today still recommend that seedlings be planted to the rootcollar. Past studies were mostly observational, used bareroot seedlings, and often reported early results from just one or two depths of planting treatments. Most of the results available regarding planting depth for boreal species are anecdotal, although they are planted by the hundreds of millions every year. The present study reports no short-term (1 year) or long-term (15 to 19 years) negative effect of planting depth on the survival and height and diameter growth of black spruce, white spruce, and jack pine seedlings over three large, replicated experiments in the boreal forest of eastern and northern Quebec (eastern Canada). Four different depth treatments were compared, from manual planting at the rootcollar to the deepest mechanical planting treatment at 10 cm or more, making this the largest, longest-lasting study of its kind. Although, as expected, important differences in growth were present between species, all three commonly planted conifers reacted similarly to the planting depth treatments (no effect). This result can in part be attributed to an almost perfect control of frost heaving in the deepest two treatments. Planting depth effects were assessed using analysis of variance, multiple Tukey honestly significant difference, and uncorrected pairwise one-tailed t-tests to increase the probability of detecting a negative effect. Absolute differences and effect sizes (generally small and often positive with greater depths) were also analyzed.

Container Volume Affects Survival and Growth of White Spruce, Black Spruce, and Jack Pine Seedlings: A Literature Review

1988 ◽  
Vol 5 (3) ◽  
pp. 185-189 ◽  
Author(s):  
D. Craig Sutherland ◽  
Robert J. Day
Keyword(s):  
Literature Review ◽  
Seedling Growth ◽  
Black Spruce ◽  
Seedling Survival ◽  
White Spruce ◽  
Jack Pine ◽  
Greenhouse Production ◽  
Production Phase ◽  
Pine Seedlings ◽  
Survival And Growth

Abstract This paper is the first general review of the affects of container volume on the survival and growth of containerized white spruce, black spruce, and jack pine seedlings. The review shows that the literature on this topic is fragmentary and inconsistent. Seedling growth in the greenhouse production phase has been more completely quantified than subsequent establishment and growth after out-planting in the field. In the greenhouse production phase, seedling growth increased from 72 to 360% when the container volume was tripled in size. After outplanting in the field, seedling growth trends were more variable. Seedling height growth increased from 34 to 84% when container volume was tripled in size. Seedling survival was more difficult to assess because of limited data. Only white spruce showed a 10% increase in survival with an increase in container volume. The indications from this literature review suggest that nursery managers and practicing foresters should become more aware of the limitations imposed on seedling survival and growth due to container volume. To maintain optional survival and growth for white spruce, black spruce and jack pine, the container volume should range from 90 to 120 cm3. North. J. Appl. For. 5:185-189, Sept. 1988.

Reduction in turgid water volume in jack pine, white spruce and black spruce in response to drought and paclobutrazol

2000 ◽  
Vol 20 (10) ◽  
pp. 701-707 ◽  
Author(s):  
J. G. Marshall ◽  
R. G. Rutledge ◽  
E. Blumwald ◽  
E. B. Dumbroff
Keyword(s):  
Black Spruce ◽  
White Spruce ◽  
Jack Pine ◽  
Water Volume

scholarly journals Effects of pH and Mineral Nutrition on Growth and Physiological Responses of Trembling Aspen (Populus tremuloides), Jack Pine (Pinus banksiana), and White Spruce (Picea glauca) Seedlings in Sand Culture

Plants ◽  
2020 ◽  
Vol 9 (6) ◽  
pp. 682
Author(s):  
Feng Xu ◽  
Maryamsadat Vaziriyeganeh ◽  
Janusz J. Zwiazek
Keyword(s):  
Populus Tremuloides ◽  
Pinus Banksiana ◽  
Root Zone ◽  
Net Photosynthesis ◽  
White Spruce ◽  
Jack Pine ◽  
Sand Culture ◽  
Plant Responses ◽  
Trembling Aspen ◽  
High Ph

Responses of trembling aspen (Populus tremuloides), jack pine (Pinus banksiana), and white spruce (Picea glauca) seedlings to root zone pH ranging from 5 to 9 were studied in sand culture in the presence of two mineral nutrition levels. After eight weeks of treatments, effects of pH on plant dry weights varied between the plant species and were relatively minor in white spruce. Higher nutrient supply significantly increased dry weights only in trembling aspen subjected to pH 5 treatment. There was little effect of pH and nutrition level on net photosynthesis and transpiration rates in white spruce and jack pine, but net photosynthesis markedly declined in aspen at high pH. Chlorophyll concentrations in young foliage decreased the most in trembling aspen and jack pine. The effects of high pH treatments on the concentrations of Mg, P, Ca, Mn, Zn, and Fe in young foliage varied between the plant species with no significant decreases of Fe and Zn recorded in trembling aspen and white spruce, respectively. This was in contrast to earlier reports from the studies carried out in hydroponic culture. The sand culture system that we developed could be a more suitable alternative to hydroponics to study plant responses to pH in the root zone. Plant responses to high pH appear to involve complex events with a likely contribution of nutritional effects and altered water transport processes.

Late Wisconsin Vegetational and Climatic History at Kylen Lake, Northeastern Minnesota

1981 ◽  
Vol 16 (3) ◽  
pp. 322-355 ◽  
Author(s):  
H. J. B. Birks
Keyword(s):  
Black Spruce ◽  
Source Area ◽  
White Spruce ◽  
Progressive Increase ◽  
Jack Pine ◽  
Snow Accumulation ◽  
Glacial History ◽  
Black And White ◽  
Pollen Stratigraphy ◽  
Shrub Tundra

AbstractKylen Lake, located within the Toimi drumlin field, is critically positioned in relation to Late Wisconsin glacial advances, for it lies between the areas covered by the Superior and St. Louis glacial lobes between 12,000 and 16,000 yr B.P. The pollen and plant-macrofossil record suggests the presence of open species-rich “tundra barrens” from 13,600 to 15,850 yr B.P. Small changes in percentages of Artemisia pollen between 14,300 and 13,600 yr B.P. appear to be artifacts of pollen-percentage data. Shrub-tundra with dwarf birch, willow, and Rhododendron lapponicum developed between 13,600 and 12,000 yr B.P. Black and white spruce and tamarack then expanded to form a vegetation not dissimilar to that of the modern forest-tundra ecotone of northern Canada. At 10,700 B.P. spruce and jack pine increased to form a mosaic dominated by jack pine and white spruce on dry sites and black spruce, tamarack, and deciduous trees such as elm and ash on moist fertile sites. At 9250 yr B.P. red pine and paper birch became dominant to form a vegetation that may have resembled the dry northern forests of Wisconsin today. The diagram terminates at 8410 ± 85 yr B.P. Climatic interpretation of this vegetational succession suggests a progressive increase in temperature since 14,300 yr B.P. This unidirectional trend in climate contrasts with the glacial history of the area. Hypotheses are presented to explain this lack of correspondence between pollen stratigraphy and glacial history. The preferred hypothesis is that the ice-margin fluctuations were controlled primarily by changes in winter snow accumulation in the source area of the glacier, whereas the vegetation and hence the pollen stratigraphy were controlled by climatic changes in front of the ice margin.

The influence of ultraviolet-B light and carbon dioxide enrichment on the growth and physiology of seedlings of three conifer species

1994 ◽  
Vol 24 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Roberta Yakimchuk ◽  
John Hoddinott
Keyword(s):  
Plant Growth ◽  
Black Spruce ◽  
Stratospheric Ozone ◽  
White Spruce ◽  
Relative Magnitude ◽  
Jack Pine ◽  
Ultraviolet B ◽  
Growth Environment ◽  
Growth Analyses ◽  
Conifer Seedling

Anthropogenic production of CO2 and stratospheric ozone depleting chemicals is altering the plant growth environment. Numerous studies have examined the influence of increasing CO2 and UV-B levels on plant growth and physiology, but few studies examine their interaction. Jack pine (Pinusbanksiana Lamb.), black spruce (Piceamariana (Mill.) B.S.R), and white spruce (Piceaglauca (Moench) Voss) were raised in growth rooms from seed for 16 weeks in air with either 350 or 700 μmol•mol−1 of CO2 in the presence or absence of supplemental UV-B irradiation. Classical and functional growth analyses were performed to identify treatment effects. Biomass production in all three species was increased by high CO2 levels while UV-B light reduced it. Shade-intolerant jack pine showed a greater production of UV-B absorbing pigments in UV-B light than did shade-tolerant spruce species. Overall, white spruce was the most sensitive species to both treatment factors. The relative magnitude of the effects in the three species caused by enhanced CO2 and UV-B levels indicate that future conifer seedling growth and competitive ability will be altered by the changing environment.

Comparison of growth and physiology of layers and naturally established seedlings of black spruce in a boreal cutover in Quebec

1999 ◽  
Vol 29 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Raynald Paquin ◽  
Hank A Margolis ◽  
René Doucet ◽  
Marie R Coyea
Keyword(s):  
Water Potential ◽  
Picea Mariana ◽  
Black Spruce ◽  
Net Photosynthesis ◽  
Growing Season ◽  
Height Growth ◽  
Total Height ◽  
Acclimation Period ◽  
Use Efficiency ◽  
Growth Of Seedlings

Growth and physiology of layers versus naturally established seedlings of boreal black spruce (Picea mariana (Mill.) BSP) were compared 15 years after a cutover in Quebec. During the first 8 years, height growth of seedlings was greater than that of layers, averaging 10.4 and 7.0 cm/year, respectively. For the last 5 years, annual height growth of layers and seedlings did not differ (25 cm/year; p > 0.05). Over the entire 15-year period, total height growth of seedlings (251 cm) was greater than that of layers (220 cm), although total height did not differ (p > 0.05) over the last 6 years. During the 15th growing season, there were no differences (p > 0.05) for predawn shoot water potential, stomatal conductance, net photosynthesis, intercellular to ambient CO2 ratio, water use efficiency, and hydraulic conductance between layers and seedlings. For diurnal shoot water potential, seedlings showed slightly less stress than layers on two of the four sampling dates. Thus, in the first few years following the cutover, the slower growth observed for layers indicated that they had a longer acclimation period following the cutover. Afterwards, similar height growth, total height, and physiological characteristics of the two regeneration types indicated that layers can perform as well as naturally established seedlings.

Growth and Morphology of Black Spruce, Jack Pine, and White Spruce Container Seedlings in Northern Ontario

1995 ◽  
Vol 12 (2) ◽  
pp. 69-74
Author(s):  
Anneli Jalkanen
Keyword(s):  
Shoot Growth ◽  
Black Spruce ◽  
Growing Season ◽  
White Spruce ◽  
Dry Mass ◽  
Jack Pine ◽  
Northern Ontario ◽  
Morphological Attributes ◽  
Crop Development ◽  
In The Beginning

Abstract The development of morphological attributes of containerized seedlings during the growing season was studied in eight crops from three nurseries in Northern Ontario, including four black spruce crops, three jack pine crops, and one white spruce crop. The variability was proportionally largest in root and shoot dry mass, followed by height and diameter. During seedling growth, proportionally the variability of size did not seem to increase. In absolute scale, however, differences between individual seedlings increased more than differences between seedling trays, possibly due to competition between individuals. Height and shoot growth were greater in the beginning of the growing season, and diameter and root growth were greater toward the end. In comparison to standards, the balance between morphological attributes (height/diameter, shoot/root) was usually acceptable, and usually independent of seedling size. The easiest way of monitoring crop development is to take seedling samples at regular intervals and to construct a growth progression curve for seedling height, if diameter growth reaches acceptable level. Care should be taken that the height of seedlings does not increase too much at the expense of diameter and root development in the larger crops. To monitor this, height-diameter ratios and shoot-root ratios might be measured a couple of times during the growing season to take corrective action if necessary. North. J. Appl. For. 12(2):69-74.

Field Performance of Five Species in Four Different Containers in Maine

1989 ◽  
Vol 6 (4) ◽  
pp. 183-185
Author(s):  
David I. Maass ◽  
Andrea N. Colgan ◽  
N. Lynn Cochran ◽  
Carl L. Haag ◽  
James A. Hatch
Keyword(s):  
Norway Spruce ◽  
Black Spruce ◽  
Field Performance ◽  
White Spruce ◽  
Jack Pine ◽  
Red Pine ◽  
Conifer Species ◽  
Long Term Performance ◽  
Term Performance

Abstract Long-term performance of container-grown seedlings in Maine was unknown in the late 1970s. A study was established to test the performance of five conifer species: Norway, white and black spruce, and red and jack pine, grown in four containers of similar volume: Can-Am Multipot #1, Multipot #2, Japanese Paperpot FH408, and Styroblock 4. Seven years after outplanting, stem heights of jack pine and red pine were significantly greater for trees started in Multipot #2 containers. Three spruce species with the greatest growth were started in Multipot #1 containers. Paperpot seedlings ranked second in height for pines, Norway spruce, and white spruce; Styroblock 4's ranked last for all species. North. J. Appl. For. 6:183-185, December 1989.

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