scholarly journals Use of organic biostimulant for growing Siberian spruce seedlings

2021 ◽  
Vol 875 (1) ◽  
pp. 012084
Author(s):  
Y V Saltsevich ◽  
A A Ageev ◽  
L V Buryak ◽  
I S Achikolova
Keyword(s):  
Growth Rate ◽  
Forest Plantations ◽  
Hypocotyl Growth ◽  
Green Pigment ◽  
Siberian Spruce ◽  
Planting Material ◽  
Natural Phenolic Compounds ◽  
Qualitative Characteristics ◽  
Sayan Mountain ◽  
Mountain Taiga

Abstract This study aims to assess the possibility of using a biostimulant Verva-spruce based on spruce’s natural phenolic compounds to reduce the time of growing planting material with improved features. The targets were seeds and 1-4-year-old seedlings of Siberian spruce, untreated and treated with the biostimulant. The effect of the biostimulant on seed germination, seedlings growth, and the pigment’s content in needles were studied. Results shown that soaking seeds in biostimulant at a concentration of 0.00025% increased the germination energy and accelerated hypocotyl growth. Moreover, using the biostimulant significantly increased the growth rate of experimental seedlings and heightened the amount of green pigment chlorophyll a up to 2.5 times. In 2020, in order to study the dynamics of the qualitative characteristics of the plants grown using biostimulant, experimental forest plantations of 4-year-old Siberian spruce seedlings were planted in the Altai-Sayan mountain taiga area. The experimental plantation will be monitored at least until the closure of the canopy.

scholarly journals Large planting material employment in the creation and reconstruction of protective forest plantations

2018 ◽  
Author(s):  
Д.Ю. Дручинин ◽  
М.В. Драпалюк
Keyword(s):  
Forest Canopy ◽  
Forest Plantations ◽  
Agricultural Lands ◽  
Existing Structures ◽  
Planting Material ◽  
The Creation ◽  
Forest Nurseries ◽  
Harvesting Process ◽  
Frost Penetration ◽  
Protective Forest

Обозначена важнейшая роль защитных лесных насаждений в вопросе защиты сельскохозяйственных земель от негативных процессов ветровой и водной эрозии, роста оврагов и значительного промерзания. Рассмотрены существующие конструкции лесных полос, являющихся частью защитных лесных насаждений. Отмечено неудовлетворительное состояние большинства существующих защитных лесополос, вследствие чего необходим ремонт либо реконструкция данных насаждений. Показана перспективность применения крупномерного посадочного материала, пересаживаемого с комом почвы, при выполнении работ по защитному лесоразведению. Представлена разработанная конструкция выкопочной машины. Орудие агрегатируется с трактором и применяется для работы в лесных питомниках, где наблюдается рядное размещение выкапываемых растений. Для повышения эффективности процесса заготовки посадочного материала с возможностью работы под пологом леса разработано технологическое оборудование для выкопки и пересадки крупномерных саженцев, размещаемое на базе гидроманипуляторных установок. Представленные машины могут также применяться для подготовки посадочных мест под посадку ими же выкопанных саженцев. При этом образованное посадочное место будет полностью повторять контуры кома почвы высаживаемого растения. Рассмотрены положения Стратегии развития защитного лесоразведения в Российской Федерации до 2020 года. Выявлена необходимость создания 4 млн га защитных лесных насаждений для устранения негативных процессов эрозии и опустынивания сельскохозяйственных земель и предотвращения дальнейшей деградации агротерриторий. Предложенная технология использования крупномерного посадочного материала в защитном лесоразведении и средства механизации процесса выкопки и пересадки саженцев с комом почвы позволяют повысить эффективность и качество создания, ремонта или реконструкции защитных лесных полос. The most important role of protective forest plantations in the issue of protecting agricultural lands from negative processes of wind and water erosion, ravine growth and frost penetration is indicated. Considered are the existing structures of forest strips that are part of protective forest plantations. The dissatisfactory condition of the many of the existing protective forest strips is noted, as a result of which it is necessary to repair or reconstruct these plantations. The prospects of using large planting material, transplanted with a soil clod, are shown when performing protective afforestation work. The developed plant lifter design is presented. The tool is aggregated with a tractor and is used for work in forest nurseries, where in-line escapement of lifting plants is observed. To improve the efficiency of the planting material harvesting process with the ability to work under the forest canopy, technological equipment has been developed for lifting and transplanting large plantlets, located on the basis of grapple plants. Presented machines can also be used to prepare planting places for planting them with excavated plantlets. In this case, the formed planting place will completely repeat the contours of the plant being planted soil clod. The provisions of the Strategy for the development of protective afforestation in the Russian Federation until 2020 are considered. The need to create 4 million hectares of protective forest plantations for eliminating the negative processes of erosion and desertification of agricultural lands and preventing further degradation of agroterritories was identified. The proposed technology for the use of large planting material in protective afforestation and the means for mechanization of the process of lifting and transplanting plantlets with a soil clod make it possible to improve the efficiency and quality of the creation, repair or reconstruction of protective forest strips.

scholarly journals Microalgae to Energy

2020 ◽  
Vol 4 (2) ◽  
pp. 1-22
Author(s):  
Olushola O
Keyword(s):  
Growth Rate ◽  
Infrared Spectroscopy ◽  
Energy Content ◽  
Soxhlet Extraction ◽  
Extraction Process ◽  
Green Pigment ◽  
Potential Source ◽  
Extraction Processes ◽  
Algae Oil

Microalgae, an organism which is considered as a potential source of biofuel from the last decade endowed with excellent capability of CO 2 capture and sequestration, water treatment, prolific growth rate and enormous energy content. The Soxhlet extraction of lipids from microalgae (Chlorella Vulgaris, Nannochloropsis sp., and Thalassiosira weissflogii), was carried out with several solvents (methanol, ethanol, isopropanol, acetone, and hexane), pure and mixtures, in order to optimize the extraction process. For the paper, the highest amount of lipid was obtained using a combination of methanol and acetone or methanol alone. The extract liquid fractions were treated with activated carbon to remove the green pigment. Attempts to in situ algae oil transesterification were accomplished using acid (H 2 SO 4 ) and base (NaOH and CaO) catalysts. The extend of extraction processes was assessed by infrared spectroscopy.

scholarly journals Economic assessment of the carbon sequestration potential of plantation forests

2021 ◽  
Vol 875 (1) ◽  
pp. 012013
Author(s):  
A Ivanova
Keyword(s):  
Primary Production ◽  
Net Primary Production ◽  
Economic Assessment ◽  
Forest Plantations ◽  
Low Carbon ◽  
Carbon Sequestration Potential ◽  
Clonal Micropropagation ◽  
Planting Material ◽  
Sequestration Potential

Abstract The goals set by Russia for the implementation of the Paris Agreement on Climate Change Mitigation, taking into account the absorptive capacity of forests, have become an additional incentive for the creation of carbon-saving forest plantations, while the formation of a voluntary carbon market has made it possible to receive income from the sale of carbon from such climate forest projects. However, in the absence of experience in the implementation of such projects in Russia and the long-term return on investment in them, associated with the specifics of forestry and the existing risks of obtaining the final result, it has become an unattractive activity. This problem can be solved by creating carbon-depositing forest plantations using fast-growing seedlings of planting material obtained by innovative biotechnological methods. The study determined the costs of creating 1 hectare of carbon-depositing forest plantations, forecasting the possible additional income from 1 hectare per year from forest plantations for the implementation of net primary production. It is concluded that even with conservative net primary production and low carbon prices, the use of planting material obtained by in vitro clonal micropropagation when creating carbon-depositing forest plantations will reduce the payback period of climate forestry projects to 5 years.

scholarly journals Experience in the Creation of Forest Plantations Using Container Seedlings

2021 ◽  
pp. 192-200
Author(s):  
Nikita M. Debkov ◽  
Keyword(s):  
Survival Rate ◽  
Test Site ◽  
Forest Plantations ◽  
Site Location ◽  
Untreated Soil ◽  
Container Seedlings ◽  
Planting Material ◽  
Tomsk Region ◽  
Standard Values ◽  
The Creation

Intensification of forestry requires the use of modern methods of reforestation, which include the introduction of container planting material. The purpose of this work is to evaluate the survival rate and linear growth of spruce container seedlings depending on the planting site location and the agrotechnical tending. The studies were carried out at the test site located in the Tomsk district of the Tomsk region. It was found that many planting containers store not 1 seedling, but 2–4 pcs and therefore approximately the same quantity of seedlings as in the traditional planting of container planting material. It was revealed that the height of 30–35 % of seedlings fails to fulfill the standard values, which was observed, as a rule, in the planting containers with several plants. According to the autumn inventory data, the height of plantations created by planting seedlings in the furrow bottom (Kruskal-Wallis test, p = 0.0001 > 0.05) reliably differs from the height of plantations of “mound” and “untreated soil” options. In terms of height growth, the options “mound side” and “furrow” have the best performance, also significantly different from the options “mound” and “untreated soil” (Kruskal-Wallis test, p = 0.0001 > 0.05). Survival rate below 85 % was observed in the plantings of the following options: “untreated soil”, “furrow bottom”, and “mound” with agrotechnical tending. The 3-fold tending decreased the survival rate of plantations except for planting in the mound side. Thus, the most successful option of planting is planting in the mound side. For citation: Debkov N.M. Experience in the Creation of Forest Plantations Using Container Seedlings. Lesnoy Zhurnal [Russian Forestry Journal], 2021, no. 5, pp. 192–200. DOI: 10.37482/0536-1036-2021-5-192-200

scholarly journals THE EFFECTIVENESS OF NATURAL GROWTH STIMULANTS IN THE CULTIVATION OF SEEDLINGS OF PICEA OBOVATA LEDEB.

2021 ◽  
pp. 329-333
Author(s):  
Tatiana Vladimirovna Khurshkainen ◽  
Svetlana Karlenovna Stetsenko ◽  
Elena Mikhailovna Andreeva ◽  
Gennady Grigorievich Terekhov ◽  
Alexander Vasilievich Kutchin
Keyword(s):  
Forest Nursery ◽  
Picea Obovata ◽  
Siberian Spruce ◽  
Stages Of Growth ◽  
Planting Material ◽  
Agricultural Plants ◽  
Forest Nurseries ◽  
Slow Growing ◽  
Effective Growth ◽  
Seedling Tree

Picea obovata Ledeb. is a slow-growing in the early stages of growth type of coniferous trees. The use of growth stimulants in the cultivation of spruce seedlings can accelerate the production of standard planting material. The paper presents the results of research of plant growth regulators influence on spruce seedlings within three years of cultivation in forest nursery conditions. Before sowing seeds of spruce soak in solutions of biological-active preparations Verva and Verva-spruce, obtaining from Abies and Picea wood greenery extracts. The plants growth regulator Verva from Abies needles (operating substance – triterpenic acids) is applied in plant growing at cultivation agricultural and commercial crops. Operating substance of a preparation Verva-spruce used for protection of agricultural plants from diseases, are phenolic compounds of Picea wood greenery possessing fungicidal and insecticidal activity. It is established that spruce seedlings processed before sowing by bio-preparation had higher parameters of growth (seedling height, diameter of seedling tree at root neck) in comparison with control plants within three years of cultivation in conditions of forest nursery. Three-year spruce seedlings which have been grown up with use of growth stimulators Verva and Verva-spruce exceeded control on 20–30% on height and on 19–20% on seedling tree thickness.  Bio-preparations Verva and Verva-spruce can be recommended for application in forest nurseries as effective growth stimulators at cultivation of Siberian spruce landing material.

scholarly journals Analysis of Inheritance and Growth of Curly Birch Progenies from Controlled Hybridisation and Possibilities of their Utilisation for Timber Production in Agricultural Landscape

2011 ◽  
Vol 40 (No. 2) ◽  
pp. 51-62 ◽  
Author(s):  
V. Paganová
Keyword(s):  
Growth Rate ◽  
Agricultural Landscape ◽  
Statistical Significance ◽  
Height Growth ◽  
Timber Production ◽  
Large Variability ◽  
Hybrid Combination ◽  
Excellent Growth ◽  
The Relationship ◽  
Qualitative Characteristics

The influence of habit form on progeny growth was studied within the evaluation of the height growth of curly birch hybrid progenies. In all years 1998, 1999 and 2001 statistically significant differences in height were found between progenies in dependence on the hybrid combination of their parents. A large variability of heights was recorded in particular hybrid combinations nearly in all evaluated years. The effect of distant hybridisation can occur within the combination of the parents with different habit forms and their progenies reach excellent growth rate. The qualitative characteristics – rhytidome colour, occurrence of curly grain (decorative timber) on the trunk and branches and habit form were evaluated in 2001. The results confirmed statistical significance of the relationship between hybrid combination and occurrence of the studied qualitative characteristics in their progeny. The curly grain on trunk was found in all evaluated progenies, in four of them the ratio of individuals with curly grain and individuals without it was 2:1, in one progeny it was in 1:1. The proportion of birches with decorative timber will possibly increase because especially fine types of curly grain can be correctly identified at higher age.  

scholarly journals Methods of Formation of Sustainable and Highly Productive Forest Plantations Created by Biogroups

2017 ◽  
Vol 7 (3) ◽  
pp. 58-65
Author(s):  
А. Вахтин ◽  
A. Vahtin ◽  
Владимир Вавин ◽  
Vladimir Vavin ◽  
Александр Ахтямов ◽  
...  
Keyword(s):  
Growth Rate ◽  
Tree Height ◽  
Forest Plantations ◽  
Crown Height ◽  
Trunk Diameter ◽  
Crown Diameter ◽  
Silvicultural Treatments ◽  
Group Methods ◽  
Significant Difference ◽  
Forest Belts

Protective forests created by nest and a diagonal-group methods in its development differ from ordinary forest stands created by planting of seedlings. In Stone Steppe from 1948 to 1954, 23.6 ha of the nesting forests were laid, and in the period 1955-1964 19 experimental and production diagonal and group belts with a total area of 27.8 ha was laid in the territory of the Institute and its experimental farms. Carrying out cleaning cuttings has a significant difference from silvicultural treatments in ordinary forest belts.The studies were conducted in forest belts, with test plots (TP) with the measurements of trees (trunk diameter, tree height, crown height, crown diameter in two directions). A comparative analysis was carried out according to the test plots on the areas with cleaning cuttings and without them. The results of research allowed to determine growth rate of tree species under the influenced of cleaning cuttings and it was used to develop methods of forest management treatments in forest belts, created by biogroups.Contemporary condition of experienced middle-aged forest belts was also studied with different methods of creation and allocation of seats on the silvicultural area.

scholarly journals The main results of a cameral inventory of protective forest plantations on agricultural land in the steppe regions of the republic of Crimea

2021 ◽  
Vol 937 (3) ◽  
pp. 032113
Author(s):  
A Kluchkina ◽  
V Tabunshchik
Keyword(s):  
Agricultural Land ◽  
Quality Characteristics ◽  
Forest Plantations ◽  
Linear Type ◽  
Crimean Peninsula ◽  
The Republic ◽  
Protective Forest ◽  
Agricultural Areas ◽  
Qualitative Characteristics ◽  
The Crimean Peninsula

Abstract The article presents the results of a cameral inventory of protective forest plantations of a linear type for any purpose for the steppe agricultural territories of the Crimean Peninsula in 2009 and 2019. As a result of the work, more than 20 thousand objects were identified, a geodatabase was compiled with a set of attributive information for each of the identified objects, indicating the length and quality characteristics of each object. An overview of the data obtained is presented for each of the diagrams, as well as a comparative analysis of the quantitative and qualitative characteristics of the identified objects for 2009 and 2019. It was revealed that from 2009 to 2019, 386 objects of the linear type corresponding to the parameters of protective forest plantations in agricultural areas, with a total length of 3.9 thousand were completely destroyed. That is, well-read forest stripes are present in the images for 2009, in the images of 2019 they are already missing.

scholarly journals Influence of potting mixture on growth and economics of stone graft of mango cv. alphonso

2020 ◽  
Vol 15 (2) ◽  
pp. 233-237
Author(s):  
O A Lad ◽  
M M Kulkarni ◽  
S G Ragaji ◽  
M S Gavankar ◽  
M M Burondkar ◽  
...  
Keyword(s):  
Growth Rate ◽  
Dry Weight ◽  
Transport Cost ◽  
Basic Medium ◽  
Manure Compost ◽  
Planting Material ◽  
Absolute Growth ◽  
The Media ◽  
Maximum Root ◽  
Grafting From

Konkan is considered as an important mango belt of India. This belt is not only famous for the production of the king of mango ‘Alphonso’ but also for the supply of quality planting material throughout the country. Soil is the basic medium used in the nursery. Availability of quality soil for nursery is getting scared and it is a need of the hour to find out lightweight, well-aerated media for reducing transport cost and mortality. Hence field experiment was carried out to find the response of mango cv. Alphonso stone grafts in the different potting mixtures. The treatment cocopeat + leaf manure + compost (1:1:2) was recorded significant increase in plant height (129.40%), girth of grafts (38.08%), highest number of shoot (1.50), number of leaf (22.70), highest absolute growth rate (0.1483 cm/day) and relative growth rate (0.0237 cm/cm/day). Whereas, maximum leaf area (617.03 cm2) was obtained in soil + leaf manure (1:1) followed by leaf manure + cocopeat (1:3) (610.17 cm2) leaf manure + cocopeat (1:3). Maximum root length (21.97 cm) and dry weight of root (7.23g) were obtained in treatment cocopeat + leaf manure + compost (1:1:1). The economics involved for different treatments showed that cocopeat + leaf manure + compost (1:1:2) was recorded with the highest B:C (1.39) followed by Soil + Cocopeat (1:1) in stone grafting. From the above investigation, it is concluded that potting mixture had a significant effect on the growth performance and economics of mango grafts. For raising mango grafts, the media containing cocopeat along with leaf manure and compost was the ideal soilless media.

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