Artificial Regeneration of Spruce on Cold, Wet Soil: 10 Years Along

1995 ◽  
pp. 115-124
Author(s):  
C. Hawkins ◽  
T. Letchford ◽  
M. Krasowski
Keyword(s):  
Artificial Regeneration

scholarly journals Artificial Regeneration of Major Oak (Quercus) Species in the Eastern United States—A Review of the Literature

2008 ◽  
Vol 54 (1) ◽  
pp. 77-106 ◽  
Author(s):  
Daniel C. Dey ◽  
Douglass Jacobs ◽  
Ken McNabb ◽  
Gary Miller ◽  
V. Baldwin ◽  
...  
Keyword(s):  
United States ◽  
Seedling Survival ◽  
Early Years ◽  
Eastern United States ◽  
Oak Regeneration ◽  
Artificial Regeneration ◽  
Quercus Species ◽  
Physiological Quality ◽  
Oak Tree ◽  
Guidelines And Recommendations

Abstract Although natural regeneration is often the best method for establishing new oak (Quercus spp.) stands, there are increasingly more situations in which high potential for oak regeneration failure dictates the use of artificial regeneration including direct seeding and planting seedlings. Additionally, afforestation planting programs frequently incorporate oak species. Artificial regeneration of oak stands is challenging for numerous reasons. In this article we synthesize the current state of knowledge regarding growing and planting the major oak species in the eastern United States, point out critical research gaps, and provide some general growing, planting, and stand tending guidelines and recommendations. Adequate site preparation, careful planting of healthy, genetically adapted seed or seedlings of high morphological and physiological quality, and subsequent control of competing vegetation and browse damage are necessary actions to assure regeneration success. Oak seedling survival in the early years after planting or seeding is a poor indicator of regeneration success. Successful regeneration may be defined as having a desired proportion of the oak planting stock reach dominant/codominant status in the stand. The costs of all activities required to produce a successful oak tree in the future stand should be considered in economic comparison of alternative prescriptions for oak regeneration.

scholarly journals The contribution of natural and artificial regeneration at the restoration of fire-affected peri-urban forest of Thessaloniki (Northern Greece)

2017 ◽  
Vol 19 (1) ◽  
pp. 29-36
Keyword(s):  
Natural Regeneration ◽  
Urban Forest ◽  
Burned Area ◽  
Cupressus Sempervirens ◽  
Northern Greece ◽  
Mixed Stands ◽  
Artificial Regeneration ◽  
Pinus Brutia ◽  
Stem Quality ◽  
Cupressus Arizonica

<p>In this study, the post-fire regeneration of three coniferous species (<em>Pinus brutia, Cupressus sempervirens </em>and<em> Cupressus arizonica)</em> was examined in the peri-urban forest of Thessaloniki, Northern Greece. The wildfire took place in July 1997 and burned almost 60% of the forest vegetation. During the autumn of 2010, 34 experimental plots were established in all aspects within the burned area. In each experimental plot the following measurements were carried out: height, diameter at breast height and crown projection in two perpendicular diameters. The results show that the <em>Pinus brutia </em>individuals, most of which came from natural regeneration, presented the best growth, in relation to the two other species in all aspects. As for <em>Cupressus sempervirens</em>, equal parts of which came from natural and artificial regeneration was characterized by remarkable growth especially in the Northeastern aspect. Finally, <em>Cupressus arizonica</em> existed in all aspects except the Northeastern. It also presented a satisfactory development, especially on the Southern aspect. Fourteen years after the fire pure or mixed stands of the above mentioned species show vigorous growth and good stem quality. Finally, the rates of participation of individual forest species indicate that the restoration has been achieved mainly by natural regeneration.</p>

Artificial Regeneration of Baldcypress in a Louisiana Crayfish Pond

1993 ◽  
Vol 17 (1) ◽  
pp. 54-57 ◽  
Author(s):  
William H. Conner ◽  
John R. Toliver ◽  
George R. Askew
Keyword(s):  
Cold Storage ◽  
Height Growth ◽  
Planting Date ◽  
Taxodium Distichum ◽  
Multiple Use ◽  
Artificial Regeneration ◽  
Growth And Survival ◽  
Containerized Seedlings ◽  
Bareroot Seedlings ◽  
Better Than

Abstract Baldcypress (Taxodium distichum [L.] Rich.) seedlings were planted in a Louisiana crayfish pond to evaluate the effect of planting date on growth and survival. Storage techniques also were evaluated against containerized seedlings to determine the best method of holding seedlings fordelayed plantings. Seedlings planted in February had better survival and grew better than seedlings planted in July. Cold storage of bareroot seedlings was superior to tub storage or containerization for both survival and height growth. Planting baldcypress seedlings in crayfish ponds representsa viable multiple-use alternative for aquaculture operations. South. J. Appl. For. 17(1):54-57.

scholarly journals Effect of climatic factors on forest succession in the forest-steppe zone of the Republic of Tatarstan

2020 ◽  
Vol 17 ◽  
pp. 00037 ◽  
Author(s):  
Irek Singatullin ◽  
Zulfiya Khakimova ◽  
Vasily Chernov ◽  
Rustam Davletshin
Keyword(s):  
Tree Species ◽  
Forest Succession ◽  
Climatic Factors ◽  
Steppe Zone ◽  
Biological Characteristics ◽  
Forest Steppe ◽  
Artificial Regeneration ◽  
Forested Area ◽  
The Republic ◽  
Forest Rehabilitation

The paper analyzes the effect of climatic factors on forest succession in the forest-steppe zone of the Republic of Tatarstan. A reliable relationship was revealed between a decrease of the oak forested area and extremely low frosts in 1939–1940, 1941–1942 and 1978–1979, and a decrease in the area of birch after the 2010 drought. Birch and oak are replaced by maple, linden and aspen. Insignificant amount of young trees and the predominance of ripe and overripe plantations of oak and birch will lead to the continuation of forest succession in the forest-steppe zone. Impossibility of reverse succession at this stage by natural rehabilitation is associated with the biological characteristics of these species. Oak and birch forest rehabilitation is only possible with measures to promote natural or artificial regeneration with due regard to the biological characteristics of tree species.

scholarly journals Germination of Dracaena cinnabari Balf.f. Seeds under Controlled Temperature Conditions

Forests ◽  
2020 ◽  
Vol 11 (5) ◽  
pp. 521
Author(s):  
Lucie Bauerová ◽  
Shiferaw Alem Munie ◽  
Kateřina Houšková ◽  
Hana Habrová
Keyword(s):  
Germination Rate ◽  
Germination Percentage ◽  
T Test ◽  
Test Results ◽  
Optimal Temperature ◽  
Artificial Regeneration ◽  
Seed Collection ◽  
Different Temperatures ◽  
Test Result ◽  
Dracaena Cinnabari

Research highlights: This study is focused on the germination of Dracaena cinnabari seeds in order to discover the possibility of natural and artificial regeneration of this species. Background and Objectives: This study aimed to determine the optimal temperature for D. cinnabari seed germination, e.g., the temperature at which the germination percentage and germination rate (vitality) are the highest. The objectives of this study are to: (1) determine the optimal temperature for the germination of D. cinnabari seeds, (2) compare the suitability of different seed collection methods, and (3) compare the germination parameters of seeds that were collected from different localities. The results of this study will contribute to obtaining the highest number of seedlings from limited seed material for reforestation of the most endangered localities of D. cinnabari species. Materials and methods: Four seed sections were employed. These sections were directly collected from either the fruits of a cut panicle or the ground and were obtained from different localities that differ in altitude. The seeds were tested in a greenhouse while using Petri dishes at three different temperatures—22, 26, and 30 °C—with four replicates of 25 seeds of each section. ANOVA and the t-test were employed for data analysis. Results: The highest germination percentages (GPs) were achieved at 26 °C and 30 °C, which were 84.6% and 82.5%, respectively. The ANOVA and t-test results showed that the germination index (GI) of the species was relatively higher at a temperature of 30 °C relative to that at other temperatures in the study. Although seeds that were collected from the tree achieved a higher GP, the t-test result showed no significant differences in the GI of D. cinnabari seeds that were collected from the ground and from the tree (p > 0.05). Overall, the findings of this study show that temperature has substantial influence on the germination of seeds of D. cinnabari. Therefore, we recommend a temperature of 30 °C to facilitate the germination of D. cinnabari, as it achieved the highest GI at this temperature relative to that at the other temperatures (22 °C, 26 °C) applied in this study.

scholarly journals Development and dynamics of mountain spruce (Picea abies [L.] Karsten) stand regeneration

2014 ◽  
Vol 60 (No. 2) ◽  
pp. 61-69 ◽  
Author(s):  
K. Malík ◽  
J. Remeš ◽  
S. Vacek ◽  
V. Štícha
Keyword(s):  
Picea Abies ◽  
Bark Beetle ◽  
Natural Regeneration ◽  
National Park ◽  
Height Growth ◽  
Seedling Height ◽  
Artificial Regeneration ◽  
Class Differences ◽  
The Past ◽  
Tree Layer

We summarized development and dynamics of natural regeneration in mountain spruce forests in areas affected by bark beetle gradation in the &Scaron;umava National Park. Detailed measurements of the regeneration were carried out using Field-Map technology (www.fieldmap.com) on ten permanent research plots. Research plots included the forests with decaying tree layer, stands in partial decline and stands with a generally healthy, or only partially damaged tree layer. Differences in rates of regeneration are very significant between the particular types of plots, especially in the youngest age class. Differences are also evident in the seedling height under varying treatments. The highest numbers of recruits (9,880 per ha) were found under intact overstorey canopies, while the fastest height growth occurred on clearcuts. This study also investigated and evaluated artificial regeneration done in the past. &nbsp;

scholarly journals Some Lessons Learned on Early Survival and Growth of Containerized, Locally-Sourced Ponderosa Pine Seedlings in the Davis Mountains of Western Texas, US

Forests ◽  
2019 ◽  
Vol 10 (3) ◽  
pp. 267
Author(s):  
Lance Vickers ◽  
James Houser ◽  
James Rooni ◽  
James Guldin
Keyword(s):  
Ponderosa Pine ◽  
Monsoon Season ◽  
Vegetation Management ◽  
Lessons Learned ◽  
Artificial Regeneration ◽  
Ponderosa Pine Forests ◽  
Pine Seedlings ◽  
Pine Regeneration ◽  
Davis Mountains ◽  
Early Survival

The ponderosa pine forests in the Davis Mountains of western Texas recently experienced a major mortality event caused, in part, by an extended regional drought that predisposed trees and stands to mortality from both western pine beetle and wildfires. The loss of many overstory pines and the scarcity of natural ponderosa pine regeneration pose a considerable challenge to restoration. A commissioned study investigated artificial regeneration using containerized ponderosa pine seedlings with multiple planting seasons and vegetation management alternatives. Early survival was statistically greater for dormant season plantings than monsoon season plantings. Vegetation management treatments influenced early growth, survival, and herbivory rates. Physical weed control, which consisted of fibrous weed mats around the base of planted seedlings, showed early advantages over some vegetation management treatments in growth, survival and herbivory deterrence, but all vegetation management treatments had similar survival and herbivory results after 2.5 years. Early survival was poor in all treatments, mainly due to herbivory, which was identified as the principal short-term obstacle to artificial regeneration of ponderosa pine in the Davis Mountains. The larger question regarding feasibility of recovery in this isolated population, particularly if local climatic conditions become increasingly unfavorable, remains.

Development Trends in Swedish Silviculture and Some Comparisons with European Countries

1969 ◽  
Vol 45 (1) ◽  
pp. 30-37
Author(s):  
Eric Stefansson
Keyword(s):  
Forest Management ◽  
Special Problem ◽  
The Other ◽  
European Countries ◽  
Northern Sweden ◽  
Small Farm ◽  
Artificial Regeneration ◽  
Productive Potential ◽  
Silvicultural Practice ◽  
Humus Accumulation

This paper is mainly concerned with progress in silvicultural practice in Sweden and the other Scandinavian countries. Reference is made to a forestry act which has been in force in Sweden since the beginning of the century and which has led to an over-emphasis on the thinning of older crops in preference to final felling. At the same time labour shortages and other factors have caused a neglect of thinning in younger crops.The small farm-forest units which are common in Scandinavia are now seen as a special problem in achieving rationalization of forest management. Co-operation to achieve larger management units is considered important.Although increasing emphasis is being placed on artificial regeneration, some 50% of Swedish forests are still being regenerated by means of seed trees. In future, intensive methods of artificial regeneration are expected to be concentrated in forests with a high productive potential. The availability of better quality planting stock has also made it possible to plant smaller numbers of trees per acre and still achieve satisfactory results.Prescribed burning is no longer considered advantageous except in areas of thick humus accumulation in Northern Sweden and to dispose of logging waste. Extensive trials are also being carried out with new types of ploughs and planting machines.

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