scholarly journals Effect of Biochar and Manual Vegetation Control on Early Growth and Survival of Planted Jack Pine (Pinus banksiana Lamb.) Seedlings in Northern Minnesota

2021 ◽  
Author(s):  
Robert A Slesak ◽  
Sara G Kelso ◽  
Marcella A Windmuller-Campione
Keyword(s):  
Soil Amendment ◽  
Seedling Survival ◽  
Soil Amendments ◽  
Jack Pine ◽  
Diameter Growth ◽  
Early Interventions ◽  
Growth And Survival ◽  
Vegetation Control ◽  
Significant Difference ◽  
Survival And Growth

Abstract Survival of planted seedlings following a regeneration harvest can be challenging and early interventions through silvicultural treatments may be required for successful stand establishment. We tested the influence of soil amendment (biochar+compost, compost-only, or control) and vegetation control (VC; applied either initially or annually for five years using brush saws) on the growth and survival of jack pine at three sites in northern Minnesota. Application of the biochar+compost soil amendment increased seedling survival by 30% relative to the control in the first year, but there was no significant difference in survival among soil amendment treatments after five years. Both soil amendments increased diameter growth relative to the control (14% increase with biochar+compost, 10% increase with compost only), with most of the biochar+compost effect attributed to the compost. Annual VC increased diameter growth by 17% relative to initial VC, but overall effects on survival and growth were generally small relative to reported effects of VC via herbicide. The limited short-term influence of biochar and manual VC on growth and survival of jack pine indicates that these practices are likely not an effective means to increase jack pine establishment, but other benefits (e.g., increased carbon storage) may become apparent with time. Study Implications Emerging changes to forest conditions and climate are likely to create challenges for successful regeneration in even-aged silvicultural systems. Early interventions such as application of soil amendments and vegetation control may be required to increase seedling survival. However, our findings indicate that biochar application and manual vegetation control were not very effective at increasing survival and growth of planted jack pine seedlings across a range of site conditions in northern Minnesota. Further study is warranted to determine whether other biochar application rates and techniques or other forms of vegetation control are more effective for successful jack pine establishment.

scholarly journals Prunus Africana Provenances Growth and Survival Evaluation in the Highland of Awi zone, Amhara Region, North Western Ethiopia

2018 ◽  
Author(s):  
Abraham Demekristos
Keyword(s):  
Light Exposure ◽  
Seedling Survival ◽  
Block Design ◽  
Soil Water Potential ◽  
Mean Value ◽  
Good Growth ◽  
Growth And Survival ◽  
Prunus Africana ◽  
Survival And Growth ◽  
Establishment Rate

The aims of the study were to evaluate seedling growth and survival of Prunus africana provenances in awi highland based on ecological requirement of the tree. We measured survival and growth of three P.africana provenances seedlings found in Ethiopia (provenances sources namely: Gedeo, Jibat and Munnessa). Design of experiment with randomized complete block design (RCBD) with three replications. Seedlings planted at 2m, 2.5m and 3m distance between plants, plot, and blocks respectively. A plot size of 10mx10m and 25 plants are found per plot (0.01ha). We used ANOVA to test differences in survival, and growth among provenances over time. Results concluded that, provenances have no significant variation among in establishment rate, plant height and collar diameter growth. Of these provenances, Jibat was the first in establishment (56%), second in height (1.97m) and diameter (2.89cm). Gedeo was stood first in height (2.30m) but second in establishment rate (52%) and thickness(3.45cm), but Munessa with very good growth in diameter(3.59cm) might be prefreed for bark extraction followed by Gedeo, last in height (1.75m),but established second (52%). Contrary to expectations, seedlings were still at substantial risk of mortality ≥3 years after planting. Probably the plants survival rate and growth probably affected by altitude, soil water potential, light exposure, and wild animal presence in the surrounding. In steep slope sites, canopy shade, existing weed vegetation as well as wild animals such as apes is unlikely to enhance seedling survival after planting. Our results suggest that seedling mean growth increased with 0.008mm thickness and 0.41mm per day while 2.8mm thickness and 146.8mm tall increment recorded in 2560meter elevated high land or injibara with mean value of 18.5°C and rain fall is 1300mm.

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.

Early Survival and Growth of Russian Pinus sylvestris L. in Canada

1970 ◽  
Vol 46 (4) ◽  
pp. 325-328
Author(s):  
A. H. Teich ◽  
M. J. Holst
Keyword(s):  
Pinus Sylvestris ◽  
Scots Pine ◽  
High Performance ◽  
Jack Pine ◽  
Stem Form ◽  
Growth And Survival ◽  
Growing Seasons ◽  
Survival And Growth ◽  
Continental Climate ◽  
Better Than

Scots pine provenances from Russia were grown in Ontario at Longlac, Dorset and Chalk River, and in Saskatchewan at Prince Albert and Indian Head. After eight growing seasons in the field all provenances survived well. The three tallest, Orel, Woronesh and Kiev provenances, grew considerably taller than the others, and at Prince Albert, where native jack pine was also grown, the growth and survival of these provenances was also better than that of jack pine. If further studies show that this high performance persists and that stem form is commercially acceptable, seedlings from these three provenances may be useful for reforestation in those parts of Canada with a continental climate.

Survival and growth response of white spruce stock types to site preparation in Alaska

2011 ◽  
Vol 41 (4) ◽  
pp. 793-809 ◽  
Author(s):  
Andrew Youngblood ◽  
Elizabeth Cole ◽  
Michael Newton
Keyword(s):  
Picea Glauca ◽  
Seedling Survival ◽  
White Spruce ◽  
Site Preparation ◽  
Herbicide Application ◽  
Preparation Methods ◽  
Vegetation Control ◽  
Survival And Growth ◽  
Stock Types ◽  
Bare Root

To identify suitable methods for reforestation, we evaluated the interacting effects of past disturbance, stock types, and site preparation treatments on white spruce (Picea glauca (Moench) Voss) seedling survival and growth across a range of sites in Alaska. Replicated experiments were established in five regions. At each site, two complete installations differed in time since disturbance: “new” units were harvested immediately before spring planting and “old” units were harvested at least 3 years before planting. We compared mechanical scarification before planting, broadcast herbicide application during the fall before planting, and no site preparation with 1-year-old container-grown seedlings from two sources, 2-year-old bare-root transplants from two sources, and 3-year-old bare-root transplants. Seedlings were followed for 11 years on most sites. Based on meta-analyses, seedling survival increased 10% with herbicide application and 15% with mechanical scarification compared with no site preparation. Scarification and herbicide application increased seedling height by about 28% and 35%, respectively, and increased seedling volume by about 86% and 195%, respectively, compared with no site preparation. Soil temperature did not differ among site preparation methods after the first 7 years. Results suggest that white spruce stands may be successfully restored through a combination of vegetation control and use of quality planting stock.

scholarly journals Influence of Organic and Inorganic Soil Amendments on Soil Moisture Content and Micronutrients

2019 ◽  
pp. 1-12
Author(s):  
E. K. Kago ◽  
Z. M. Kinyua ◽  
J. M. Maingi ◽  
P. O. Okemo
Keyword(s):  
Soil Moisture ◽  
Moisture Content ◽  
Soil Amendment ◽  
Soil Moisture Content ◽  
Soil Amendments ◽  
Orange Peel ◽  
Petri Dish ◽  
Significant Difference ◽  
Dry Soil ◽  
Metham Sodium

Aims: This study was carried out to evaluate the influence of organic and inorganic soil amendments on soil moisture content and micronutrients in semi and arid areas.   Methodology: The study was laid out as randomized complete block design (RCBD) in split plot arrangement for two seasons. The treatments were ChalimTM, Super-hydro-grow polymer and Metham sodium, Metham sodium, Metham sodium + Orange peel, Super-hydro-grow polymer, Control, Brassica tissue, ChalimTM + Super-hydro-grow polymer, Brassica tissue + Orange peel and Metham sodium + Super-hydro-grow polymer. Soils were sampled from each experimental site, dried and taken to laboratories for determination of Zinc, Iron, Manganese and copper both at initial and at the end of the experiment using a SpectrAA- 40 atomic absorption spectrometer, PSC-56 programmable sample changer. Moisture content was calculated by subtracting total dry soil plus Petri dish weight from total wet soil plus Petri dish weight. Calculated moisture content was recorded in all samples across the two seasons for analysis. Results: There was a significant difference (p≤0.05) in the treatment effect on soil moisture content in except for MS and CM+OP in both season one and season two in the green house. A combination of both organic and inorganic soil amendments like BT+OP, BT+ SHG had the highest moisture content. There was significant difference (p≤0.05) in the soil amendments effect on the amount of Micronutrients in the beginning and end of the experiement. Conclusion: Through this study, it was realized significant difference (p≤0.05) in the soil amendments effect on soil moisture content in all the treatment in both seasons. BT +SHG soil amendment was superior in maintaining soil moisture content in both season 1 and 2. It is therefore recommended that Metham sodium should not be applied in very dry soil to avoid reduction of the moisture content. There was micronutrient increment in all the treatments. BT+ SHG was superior soil amendment in increment of micronutrients.

scholarly journals THE EFFECT OF SEASONS AND DEPTHS ON GROWTH AND SURVIVAL RATE OF PEARL OYSTER (Pinctada maxima) IN KODEK BAY, NORTH LOMBOK

2011 ◽  
Vol 3 (2) ◽  
Author(s):  
M. S. Hamzah ◽  
Bisman Nababan ◽  
Bisman Nababan
Keyword(s):  
Survival Rate ◽  
Seedling Survival ◽  
Pearl Oyster ◽  
Mass Mortality ◽  
Growth And Survival ◽  
Transition Season ◽  
Pearl Oysters ◽  
Significant Difference ◽  
Similar Survival ◽  
Pinctada Maxima

The pearl oyster (Pinctada maxima) farming in the West Nusa Tenggara waters in particular and in other areas, complained to the mass mortality of pearl oysters saplings on shell width between 3-4 cm. The mass mortality, allegedly as a result of changing in environmental conditions and triggered by the shift in seasons. This research aimed to determine the effect of seasonal variations in water conditions at different depth levels on growth and survival of seedlings of pearl oysters conducted on March 23, 2008 to February 22, 2009. This research was very useful for pearl oyster farming in an effort to suppress the mass mortality rates based on the appropriate level of depth and seasons. Analysis of variance showed that the seasonal factors, the level of depth, and the interaction between both factors responded very significantly on pearl oyster seedling survival. The "significant difference test" showed that the interaction between season and level of 2 m depth provided the best result with 100% survival. The similar survival rate was also found at a depth of 8 m during the transition season I and the east season. For single factor (depth), the best result for growth and survival rate was found in 2 m deep during the transition season I.Keywords: Oyster sapling, Pinctada maxima, growth, mortality, season, depth, Kodek Bay

scholarly journals Survival and Growth of Stewartia pseudocamellia Rooted Cuttings and Seedlings

1999 ◽  
Vol 17 (2) ◽  
pp. 53-56
Author(s):  
Daniel K. Struve ◽  
L. Mark Lagrimini
Keyword(s):  
Caffeic Acid ◽  
Seedling Survival ◽  
Growing Season ◽  
Stem Cuttings ◽  
Indolebutyric Acid ◽  
Rooted Cuttings ◽  
Rooted Cutting ◽  
Growth And Survival ◽  
Survival And Growth ◽  
Minimum Heat

Abstract Japanese Stewartia, Stewartia pseudocamellia (Maxim.), cuttings were rooted and seeds germinated to compare growth and survival of the two plant types. Softwood cuttings collected from 18-month-old, 1 to 1.3 m (3 to 4 ft) tall stock plants were rooted successfully (greater than 64%) at two propagation times by giving severed cuttings a basal quick dip in 0.1 M ascorbic or caffeic acid, before a basal quick dip in 100 ppm indolebutyric acid (IBA). Cuttings were overwintered in either a minimum heat (3C, 35F) polyhouse (89% survival), or in a 7C (45F) cooler (97% survival). There was no difference in height following overwintering, but by the end of the first growing season following propagation, seedlings were significantly taller than rooted cuttings, 84 vs 72 cm (33 vs 28 in), respectively. Although growth was vigorous, survival after upcanning was poor; rooted cutting survival was 17%, seedling survival was 48%. This study demonstrates that Japanese Stewartia can be propagated readily by softwood and semi-hardwood stem cuttings dipped in low IBA concentrations if cuttings are pre-treated with either ascorbic or caffeic acid. These cuttings can also be overwintered successfully.

scholarly journals Assessment of a Climate-smart Cropping Combination for Integrated Crop and Livestock Production System

2020 ◽  
pp. 8-15
Author(s):  
Langa Tembo ◽  
Lydia M. Chabala ◽  
Pharaoh C. Sianangama
Keyword(s):  
Soil Amendment ◽  
Soil Amendments ◽  
Principal Component ◽  
Smallholder Farming ◽  
Velvet Bean ◽  
Rhodes Grass ◽  
Experimental Implementation ◽  
Significant Difference ◽  
Cropping Seasons ◽  
On Farm

Aims: To investigate sustainable climate-smart cropping combinations for integrated production of crops and livestock. Study Design: The mother baby trial design was used. The mother trial being an on-station experiment and the on-farm being baby trials. The experiment was arranged as a split plot design. The main plots were 3 types of soil amendments; cattle manure, fertilizer and a control. The subplots were eight (8) crop combinations, arising from velvet bean, cowpea, rhodes grass and ryegrass. Place and Duration of Study: The on-station field experiment was located at Liempe farm of the University of Zambia, in Chongwe district. The on-farm experiments were laid in Mazabuka and Chibombo districts of Zambia for two consecutive seasons, 2016/17 and 2017/18 cropping  seasons. Methodology: The cropping combination responses were measured based on variable performance of maize test-crop. The ‘soil amendments type’ and ‘crop combination’ performance were evaluated using analysis of variance. Means were separated using Fisher protected Least Significant Difference (LSD) at α = 0.05. Principal component analysis (PCA), was also undertaken to further understand responses among crop combinations. Farmers reactions arising from experimental implementation was qualitatively analysed using content analysis. Results: Significant differences (P = .05) across cropping combinations on measured variables (for maize test crop) were exhibited among soil amendments type at an on-station trial during the 2017/ 18 season. Fertilizer soil amendment type was the best performer followed by manure and the control. Significant differences (P = .05) were also obtained among crop combinations across soil amendment type in all experimental sites. Crop combinations with velvet bean performed better than others. Qualitative grass inspection showed that rhodes grass was a better performer than rye grass. Conclusion: Maize grown in combination with legumes particularly velvet beans and rhodes grass are a viable option as a smallholder farming practice in a changing climate.

scholarly journals THE EFFECT OF SEASONS AND DEPTHS ON GROWTH AND SURVIVAL RATE OF PEARL OYSTER (Pinctada maxima) IN KODEK BAY, NORTH LOMBOK

2011 ◽  
Vol 3 (2) ◽  
Author(s):  
M. S. Hamzah ◽  
Bisman Nababan ◽  
Bisman Nababan
Keyword(s):  
Survival Rate ◽  
Seedling Survival ◽  
Pearl Oyster ◽  
Mass Mortality ◽  
Growth And Survival ◽  
Transition Season ◽  
Pearl Oysters ◽  
Significant Difference ◽  
Similar Survival ◽  
Pinctada Maxima

<p>The pearl oyster (Pinctada maxima) farming in the West Nusa Tenggara waters in particular and in other areas, complained to the mass mortality of pearl oysters saplings on shell width between 3-4 cm. The mass mortality, allegedly as a result of changing in environmental conditions and triggered by the shift in seasons. This research aimed to determine the effect of seasonal variations in water conditions at different depth levels on growth and survival of seedlings of pearl oysters conducted on March 23, 2008 to February 22, 2009. This research was very useful for pearl oyster farming in an effort to suppress the mass mortality rates based on the appropriate level of depth and seasons. Analysis of variance showed that the seasonal factors, the level of depth, and the interaction between both factors responded very significantly on pearl oyster seedling survival. The "significant difference test" showed that the interaction between season and level of 2 m depth provided the best result with 100% survival. The similar survival rate was also found at a depth of 8 m during the transition season I and the east season. For single factor (depth), the best result for growth and survival rate was found in 2 m deep during the transition season I.</p><p>Keywords: Oyster sapling, Pinctada maxima, growth, mortality, season, depth, Kodek Bay</p>

scholarly journals Seed encrusting with salicylic acid: a novel approach to improve establishment of grass species in ecological restoration

2020 ◽  
Author(s):  
Simone Pedrini ◽  
Jason C. Stevens ◽  
Adam Cross ◽  
Kingsley W. Dixon
Keyword(s):  
Salicylic Acid ◽  
Ecological Restoration ◽  
Seedling Survival ◽  
Seedling Emergence ◽  
Field Conditions ◽  
Grass Species ◽  
Seed Coating ◽  
Seeding Rate ◽  
Significant Difference ◽  
Survival And Growth

AbstractTo achieve global ambitions in large scale ecological restoration, there is a need for approaches that improve the efficiency of seed-based restoration, particularly in overcoming the bottleneck in the transition from germination to seedling establishment. In this study we tested a novel seed-based application of the plant stress modulator compound, salicylic acid, as a means to reduce seedling losses in seed-to-seedling phase. First-time seed coating technology (encrusting) was developed as a precursor for optimising field sowing for three grass species commonly used in restoration programs, Austrostipa scabra, Microlaena stipoides, and Rytidosperma geniculata. Salicylic acid (SA, 0.1mM) was delivered to seeds via imbibition and seed encrusting with the effects tested on seed germination under controlled conditions (to test for resilience to drought), and in field conditions on seedling emergence, plant survival, and seedling growth. SA did not significantly impact germination under water stress in controlled laboratory condition and did not affect seedling emergence in the field. However, seedling survival and growth was improved in plants from SA treated seeds (imbibed and encrusted) under field conditions. When SA delivery mechanisms of imbibing and coating were compared, there was no significant difference in survival and growth, showing that seed coating has potential to deliver SA. Effect of intraspecific competition as a result of seedling density was also considered. Seedling survival over the dry summer season more than doubled when seed was sown at low density (40 plants/m2) compared to high density seeding (380 plants/m2). Overall, adjustment of seeding rate according to expected emergence combined with the use of salicylic acid is a cost-effective means for improving seed use efficiency in seed-based restoration.

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