scholarly journals Winter resistance and frost resistance of representatives of the genus Cotinus Mill. in the conditions of the Right Bank Forest Steppe of Ukraine

2021 ◽  
pp. 164-175
Author(s):  
Valentina Oksantyuk ◽  
Larysa Koldar
Keyword(s):  
Frost Resistance ◽  
Abiotic Factors ◽  
Winter Hardiness ◽  
Winter Period ◽  
Forest Steppe ◽  
Point Scale ◽  
National Academy Of Sciences ◽  
Crown Shape ◽  
The Right ◽  
Academy Of Sciences

Aim. The goal is to assess the winter and frost resistance of plants of representatives of the genus Cotinus Mill. from the collection of the National Dendrological Park "Sofiyivka" of the National Academy of Sciences of Ukraine and the Botanical Garden named after Academician Alexander Fomin of the Taras Shevchenko National University of Kyiv. Methods. The frost resistance of plants was investigated in the laboratory of plant physiology of the Institute of Horticulture of the National Academy of Sciences of Ukraine, by the method of direct freezing of shoots during the period of forced dormancy of plants. The intensity of damage (browning) of tissues on transverse sections of shoots was assessed using a six-point scale by M. A. Solov'eva (1982). The objects of study were plants C. obovatus Raf., C. coggygria Scop., C. coggygria 'Royal Purple', C. coggygria 'Purpurea'. Winter hardiness was assessed visually on an eight-point scale by S. Ia. Sokolov, (1957). Results. According to estimates of the general freezing of plants in the winter period of 2014–2020, minor injuries were found in all representatives of the genus Cotinus, which were estimated at 1–2 points. The results of experimental studies of plant frost resistance showed that in most variants of the experiment, the tissues of the upper internode and buds froze more. The tissues of the medial part of the shoot turned out to be the most resistant to freezing. According to the results of artificial freeze testing of cut shoots of C. coggygria and C. coggygria 'Royal Purple", sampled in the period of forced dormancy of plants, insignificant tissue damage was revealed at freezing temperature of –25 °С and –30 °С (0.63–1.70), only at temperature of –35 °C, the score of bark damage was 2.3–2.5 points. Conclusions. The low temperatures of the winter period of the study area cannot be considered as limiting abiotic factors that limit the widespread use of the studied representatives of the genus Cotinus in landscape construction. The high potential of frost and winter hardiness of the studied taxa gives grounds to test them in the more northern regions of the Right Bank Forest-Steppe of Ukraine to create garden and park compositions, because due to high decorative flowering and specific crown shape they have an attractive appearance in both group and solitary plantations.

scholarly journals Drought resistance of English roses varieties in the conditions of the Right-bank Forest-Steppe of Ukraine

2021 ◽  
Vol 17 (1) ◽  
pp. 60-65
Author(s):  
D. S. Gordienko ◽  
O. L. Rubtsova ◽  
T. O. Buidina ◽  
V. I. Chizhankova ◽  
O. F. Rozhok ◽  
...  
Keyword(s):  
Drought Resistance ◽  
Urban Areas ◽  
Unit Area ◽  
Stomatal Density ◽  
Forest Steppe ◽  
Laboratory Studies ◽  
National Academy Of Sciences ◽  
The Right ◽  
Academy Of Sciences ◽  
Field And Laboratory Conditions

Purpose. To study the drought resistance of plants of English roses varieties. Methods. Field, anatomical, biometric. The drought resistance of plants in the field was assessed according to S. S. Pyatnitsky 6-point scale (1961). The number of stomata per unit area of the leaf blade was determined using a JSM-6700F scanning electron microscope (JEOL, Tokyo, Japan).  Results. The drought resistance of plants of English rose varieties was investigated both in the field and laboratory conditions. According to visual observations, during periods with a low level of moisture supply, leaf turgor did not decrease; therefore, the field drought resistance of all varieties was estimated at 5 points. According to the parameters of stomatal density per unit of leaf area, varieties that have the maximum and minimum values of this indicator were identified. Conclusions. It was found that all studied varieties of English roses from the collection of the State Dendrological Park “Alexandria” of the National Academy of Sciences of Ukraine are quite drought-resistant in the field. But they differed significantly in the density of stomata per unit area. The largest average number of stomata per 0.5 mm2 (163.67±7.93 pcs.) was recorded in the variety ‘Alan Titchmarsh’, the lowest (47.67±1.94) – in ‘Charles Austin’. Comparison of data on leaf morphology of English roses and stomata density showed that varieties with smaller leaf sizes (‘Cottage Rose’, ‘Fisherman Friend’, ‘Noble Antony’, ‘Crocus Rose’) have a greater number of stomata per unit area, which indicates their high drought resistance. The data obtained from field and laboratory studies will be taken into account in the formation of recommendations on the use of roses for landscaping urban areas, where plants may find themselves in more extreme conditions than in an arboretum.

Apricot (Prunus armeniaca L.) promise cultivars frost resistance and winter-hardiness under the conditions of the Right-Bank subzone of the Ukraine’s Western Lisosteppe

2021 ◽  
pp. 102-109
Author(s):  
O.O. Ignatenko ◽  
◽  
N.V. Moiseichenko ◽  
V.I. Vasylenko ◽  
◽  
...  
Keyword(s):  
Frost Resistance ◽  
Botanical Garden ◽  
Prunus Armeniaca ◽  
Winter Hardiness ◽  
General Level ◽  
Winter Period ◽  
Critical Temperatures ◽  
The Difference ◽  
One Year ◽  
The Right

In the winter-spring period of 2019-2020 the researches were carried out on the territory of the Institute of Horticulture of the National Academy of Agrarian Sciences (IH NAAS) of Ukraine (the Kyiv region) under the field and modeled conditions in order to determine the influence of variable temperatures on the frost resistance and winter-hardiness of five apricot cultivars bred in Crimea (Nikitsky Botanical Garden). Cv Siaivo of IH NAAS was used as the control. The varieties estimation in the natural conditions showed that they were characterized with high winter-hardiness and frost resistance in all the variants of the experiment in the orchards. During the relatively cool winter of 2018/2019 with the minimum temperature -14,2°C the damage of the shoots tissues and buds were by almost two times more severe (all the strains) than in the nearly frostless winter of 2019/2020. When testing in the laboratory under t -25 °C the difference in the cultivars damage by years was not considerable, its general level being higher than in the winter period of 2018/2019 (in the control freezing was not utilized). At the same time under a temperature of -30 °C percent of the damage of most of cvs (5 out of 6) was higher in the winter of 2019/2020. That showed the importance of the cold influence on the plants preparation to the effect of low temperatures. The usage of such temperatures as -30 °C established the critical level of their influence on the varieties, especially on such tissues as the top and generative buds of the one-year increment. In the field conditions under the effect of the critical temperatures, namely: after the long thaw the plants could lose crop at all as their generative buds did not endured significant air temperature fluctuations which took place in the winter period of 2019/2020. However, with the proper management the trees could be restored after the stress influence, the crop losses being rather substantial though. It was the strain Vynoslivyi that appeared the most frost resistant and can be applied in breeding as one of the parental forms and grown in sufficiently great industrial volumes.

scholarly journals THE MATERIALS OF THE KOMAROVO AND SOSNITSA CULTURES IN THE EXPOSITION OF THE ARCHAEOLOGICAL MUSEUM OF THE INSTITUTE OF ARCHEOLOGY OF THE NAS OF UKRAINE

2019 ◽  
Vol 32 (3) ◽  
pp. 49-62
Author(s):  
S. D. Lysenko
Keyword(s):  
Detailed Comparison ◽  
Forest Steppe ◽  
National Academy Of Sciences ◽  
Soil Burial ◽  
Site Analysis ◽  
Ruminant Animal ◽  
Long Time ◽  
Funeral Practice ◽  
Academy Of Sciences ◽  
Late Stages

The article republishes the ceramics and bronze decorations of Komarovo and Sosnitsa cultures of the Trzciniec cultural circle (TCC) from the exposition of the Archaeological Museum of the Institute of Archeology of the National Academy of Sciences of Ukraine. Detailed descriptions of the exhibits and their author’s graphic reconstructions are given. These things, which became a textbook long time ago, previously were published only in the form of schematic and inaccurate drawings or in the form of not very high-quality photographs. The materials originate from the sites of the northern part of the forest-steppe eastern Volhynia (Wojciechowka), Kiev (Ukrainka, Zavalovka, Zdvizhevka, Plitovische, Gostomel) and Chernigov (Rudnya) Polesie. The finds refer to different periods of the formation and development of the TСC and date back to 2nd thousand BC. Special attention is paid to vessels discovered in 1956 by N. T. Evstropov at the site Gostomel, Stekol’nyy zavod 1. S. S. Berezanskaya came to the conclusion that this point is not a household site, but «a small soil burial ground with burning», referring to a series of observations of N. T. Evstropova. Detailed comparison of the primary publication of N. T. Evstropov with subsequent re-publication of the site of S. S. Berezanskaya, allow us to call into question conclusions of the latter. One of the reasons for skepticism is the miraculous transformation of «destroyed teeth of a ruminant animal» (in N. T. Evstropov publication) into «worn-out» and «calcified bones» (in S. S. Berezanskaya publications). Fragments of the teeth of a ruminant animal (bull?) are still folded into one of the vessels exhibited at the Archaeological Museum of Institute of Archeology of the National Academy of Sciences of Ukraine. Could the vessels from Gostomel be connected with ritual-funeral practice, such as the vessels found in the ritual-funeral complexes of the Malopolovetskoe, Wojciechowka, Bukovna cemeteries? It is possible, but there is no evidence for this. Similarly, they can be associated with any other rituals, as well as with the remains of an ordinary household complex. N. T. Evstropov did it at the first publication of the site. Analysis of the ceramic complex allows us to attribute the Gostomel, Stekol’nyy zavod 1 point to the turn of the middle and late stages of the TCC Sosnitsa culture and date it to the end of the 13th — the beginning of the 12th centuries BC.

scholarly journals The technique of integrated assessment of varieties of korean chrysanthemum (Chrysanthemum coreanum), introduced in Belarus

2019 ◽  
Vol 64 (1) ◽  
pp. 33-39
Author(s):  
S. V. Tsekhanovich
Keyword(s):  
Integrated Assessment ◽  
Vegetative Reproduction ◽  
Ornamental Plants ◽  
Botanical Garden ◽  
Landscape Design ◽  
Point Scale ◽  
National Academy Of Sciences ◽  
Modified Method ◽  
Number Of Leaves ◽  
Academy Of Sciences

Recently, with the development of decorative gardening and landscape design, the extension of the assortment of floral and ornamental plants including perennial plants becomes relevant. chrysanthemum Korean – one of the most promising crops for flower decoration of the cities of Belarus, characterized by long flowering periods, unpretentiousness at cultivation, accessible ways of reproduction ways of plants, a wide variety of varieties. In the article present a modified method of comprehensive assessment of chrysanthemum Korean (Chrysanthemum coreanum), recommended for use in industrial landscaping. The method is based on 11 decorative and biological qualities: stability of flower coloration, duration and stability of flowering plants, number of inflorescences, height and shape of the plant, number of leaves on the stem, winter hardiness of plants, resistance to diseases and pests, ability of plants to vegetative reproduction, preservation of decorative qualities without plant transplantation which are important for industrial cultivation of plants. Each qualities is evaluated on a 3-point scale. The sum of points determines the perspective of the variety for use in gardening. Varieties of chrysanthemum that received 27 points or more are very promising plants, 19–26 – a promising plants, below 18 points – to the unpromising plants.The method was used on a collection of chrysanthemum Korean of the Central Botanical Garden of the National Academy of Sciences of Belarus. Based on this technique, perspective plant varieties were selected for the green construction of Belarus.

New insights into Southern Caucasian glacial-interglacial climate conditions inferred from Quaternary gastropod faunas

2021 ◽  
Author(s):  
Christiane Richter
Keyword(s):  
Limiting Factor ◽  
Forest Steppe ◽  
National Academy Of Sciences ◽  
Gastropod Species ◽  
Climate Conditions ◽  
University Of Technology ◽  
The Republic ◽  
Significant Patterns ◽  
Glacial Periods ◽  
Academy Of Sciences

<p><strong>New insights into Southern Caucasian glacial-interglacial climate conditions inferred from Quaternary gastropod faunas</strong></p><p>Dr. Christiane Richter<sup>1</sup>, Dr. Daniel Wolf<sup>1</sup>, Dipl.-Biol. Frank Walther<sup>2</sup>, Dr. Stefan Meng<sup>3</sup>, Dr. Lilit Sahakyan<sup>4, </sup>M. Sc. Tilmann Wolpert<sup>5</sup>, Prof. Dr. Markus Fuchs<sup>5</sup>, Prof. Dr. Michael Zech<sup>1</sup>, Prof. Dr. Dominik Faust<sup>1</sup></p><p><sup>1</sup>Dresden University of Technology, Helmholtzstr. 10, 01069 Dresden, Germany</p><p><sup>2</sup> University Hamburg, Centrum für Naturkunde, Martin-Luther-Platz 3, 20146 Hamburg, Germany</p><p><sup>3</sup> Ernst-Moritz-Arndt-University Greifswald, Friedrich-Ludwig-Jahn-Str. 17a, 17489 Greifswald, Germany</p><p><sup>4</sup> National Academy of Sciences of the Republic of Armenia, Baghramyan Ave. 24a, 0019 Yerevan, <br>  Armenia</p><p><sup>5 </sup>Justus-Liebig-University Giessen, Senckenbergstr. 1, 35390 Gießen, Germany</p><p>We present our latest results  from gastropod analyses conducted on loess palaeosol sequences from northeast Armenia (Southern Caucasia) covering at least three glacial-interglacial cycles. The ecostratigraphy shows significant patterns of species composition related to the succession of pedocomplexes and loess, respectively. Pedocomplexes included species that can be associated with highgrass- to forest-steppe biomes, indicating increased humidity for these sections compared to loess layers. In contrast, loess layers that relate to glacial periods are associated with gastropod species of semidesert environments with shrub- and shortgrass-steppes, indicating semiarid to arid conditions. Furthermore, the loess deposits do not show any evidence for cold-adapted gastropod species. Therefore we suggest that average July temperatures in the study area were above 10°C, even during periods of loess deposition. We propose, that the limiting factor for bios during glacial periods was aridity, rather than temperature. In addition, we observe environmental differences between the various glacial times, with our results indicating a trend towards steadily increasing aridity in Southern Caucasia across the Middle to Late Pleistocene.</p>

Cognitive and Transformative Human Activity in Academician E.M. Babosov’s Philosophical Discourse (Book review: E.M. Babosov. Science and Human Dimensionality of Surrounding Reality. Minsk: Belaruskaya navuka 2021)

2021 ◽  
Vol 64 (2) ◽  
pp. 149-155
Author(s):  
Alexander N. Danilov
Keyword(s):  
Human Activity ◽  
Political System ◽  
National Academy Of Sciences ◽  
Scientific Cognition ◽  
World Picture ◽  
New Ideas ◽  
The Republic ◽  
The Government ◽  
The Right ◽  
Academy Of Sciences

The article presents reflections on the book Science and Human Dimensionality of Surrounding Reality written by E.M. Babosov, who is a famous philosopher and sociologist, academician of the National Academy of Sciences of Belarus. The book was published to the 90th anniversary of the author’s birth. The reviewed book reveals the nature, features, and trends of scientific cognition. There demonstrates wide panorama of interconnections between scientific cognition and education, religion, culture, political system, management, national and global security. The book’s author describes the challenges, issues, and prospects of the 21st century. In his research, E.M. Babosov searches the answer to the question: Will science save humanity? The author’s meditations in the book is the result of his thoughts and concerns of recent decades. The academician acknowledges that scientific cognition, comprehension, and interpretation have eventually become his vocation. According to the book’s author, the progress of science is always a challenge, when the right and the wrong are equal, and new ideas change the usual world-picture. E.M. Babosov provides his vision on relevant modern issues in the light of the government practice of the Republic of Belarus, its diverse manifestation under the global instability condition as well as emphasizes the most relevant problems in the areas of cyber and media spaces, network society formation, largescale digitalization of all human activity spheres. The author analyzes the issues of the development of Belarusian statehood, national identity, national system of government management, personal and public security, political system advance.

Determinants of citizens' attitude to the Ukrainian government: a sociological analysis

2020 ◽  
pp. 133-146
Author(s):  
Oleksandr Rakhmanov
Keyword(s):  
Social Research ◽  
Economic Value ◽  
Structural Factors ◽  
National Academy Of Sciences ◽  
Economic Interests ◽  
Political Forces ◽  
Form Of Government ◽  
The Government ◽  
The Right ◽  
Academy Of Sciences

The article considers the perception of citizens of the government of Ukraine depending on the institutional forms of its formation. Citizens 'attitudes toward government are individuals' reactions to government policies and the activities of its leaders. The formation of these reactions occurs by comparing one's own expectations about the government's activities with the perception of the results of these activities. The dynamics of the influence of socio-economic, value-ideological and structural factors on the assessment of government activities was analyzed on the basis of empirical data from the five waves of the European Social Research (ESS) and the 2020 monitoring study of the Institute of Sociology of the National Academy of Sciences of Ukraine. the dynamics of the influence of socio-economic, value-ideological and structural factors on the assessment of power was analyzed. It was found that in the case of forming the government through a coalition of political forces in the parliament, citizens' perception of government activities is largely determined by their ideological beliefs. In particular, in relation to both governments of Yulia Tymoshenko, more satisfaction was observed among people who position themselves on the right ideological flank. On the other hand, in relation to the government of Viktor Yanukovych, more satisfaction was observed among people positioning themselves on the ideological left flank. In contrast to this, when the government is formed on the initiative of the presidential administration, government policy is perceived by the population through the prism of their structural and socio-economic interests. Satisfaction with the activities of the second Mykola Azarov’s Government and the Denys Shmyhal’s Government was mostly conditioned by an income and financial situation of the respondens. The results of the study generally supported the assumption that the turnover of government and the institutional form of government is reflected in the attitude of citizens to the activities of governments.

scholarly journals INVESTIGATION OF THE POROSSYA ARCHAEOLOGICAL EXPEDITION IA NAS OF UKRAINE (2011—2016)

2019 ◽  
Vol 30 (1) ◽  
pp. 62-66
Author(s):  
A. V. Borysov
Keyword(s):  
Route Planning ◽  
Research Topic ◽  
Archaeological Sites ◽  
Forest Steppe ◽  
National Academy Of Sciences ◽  
Research Activity ◽  
Junior Research ◽  
Important Direction ◽  
Burial Mounds ◽  
Academy Of Sciences

The Porossya archaeological expedition of the Institute of Archaeology of the National Academy of Sciences of Ukraine (PorAE) is part of the research project about the Old Rus Porossay. The project is realizing in the Department of Old Rus and Medieval Archeology of the IA NAS of Ukraine. First Porossya archaeological expedition started on August 9, 1945. In 2011 it was renewed. Investigations are carried out on the territory of the South of Medieval Kyiv Region. Special attention in research activity is focused on surveys of archeological monuments and their documentation. The basis of the expedition is the annual work within the framework of the research topic of the Department of Old Rus and Medieval Archeology of the IA NAS of Ukraine. The head of the expedition is Artem Borysov, the junior research fellow of the department. The model for the expedition is the organizational structure of multi-year survey expeditions, in particular, the Ovruch / East-Volyn archaeological expedition of the IA NAS of Ukraine (leaded by A. Tomashevsky and S. Pavlenko) and Cherkassy Forest-steppe archaeological expedition (leaded by M. Syvolap). Field route planning and tasks are related to the program for collecting and analyzing the source base and for recording and mapping of the archaeological sites of Porossay. By 2017, the expedition surveyed 160 archeological monuments of different chronological periodss. The work of the expedition is aimed at a systematic, full-scale survey of Old Rus monuments in river Ros basin and adjacent territories. An important direction of the expedition is the multy-season study of certain micro-regions (the Nehvoroshch basin, the vicinity of chronicle Torchskye). Such areas are gradually approaching the level of continuous inspection of the territory. In total, during the 10 seasons, participents of the Porossya archaeological expedition surveyed 267 archaeological sites (including 22 settlements), 118 mounds in 20 burial groups and 9 separate burial mounds. The tradition of archeological exploration in Porossya is related to the names of V. Dovzhenko, M. Kuchera, L. Ivanchenko. The work of the expeditions on the study of the settlements of the Kyiv region and the Zmiyiv shaft (leaded by M. Kuchera) and the detachments of the Dnieper Ancient Expedition (leaded by O. Mitsev, L. Ivanchenko) allowed to create a basic map of monuments for this territory in the time of Old Rus.

scholarly journals CONTENT OF ANTHOCYANINS IN THE BARK OF FRUIT AND BERRY PLANTS DUE TO ADAPTION TO LOW TEMPERATURES

2021 ◽  
pp. 233-239
Author(s):  
Inna Valerievna Goncharovska ◽  
Vladimir Fedorovych Levon
Keyword(s):  
Dry Matter ◽  
Abiotic Factors ◽  
Winter Hardiness ◽  
The Body ◽  
Winter Period ◽  
Viburnum Opulus ◽  
Important Indicator ◽  
Adverse Conditions ◽  
Physiological Processes ◽  
Adaptive Reactions

The most important indicator of adaptability cultivar is the winter hardiness of wood. In adverse conditions of autumn-winter period trees of many cultivars may be severely damaged and even die. At the same time, in the process of evolution, a system of adaptive reactions is formed that are associated with a deep change in metabolism and is determined by the speed and depth of its change without violating the consistency between individual functions, so that the unity of the organism and the environment is not violated. This, ultimately, determines the vital activity of the body and its endurance. At this stage of the study, it is shown how plants react to lower temperatures by changing the color of sprouts and accumulating anthocyanins. The aim of the work was to determine the winter hardiness of different cultivars of fruit plants based on physiological processes. Cultivars Malus domestica 'Era' and M. domestica 'Vydubytska plakucha' were isolated in the presence of the largest accumulation of secondary metabolites in their generative organs – 378.18–273.33 mg/100 g of dry matter, that is, they are the most plastic before adapting to abiotic factors. The Ribes uva-crispa 'Hamamekii' and Viburnum opulus genotypes with the lowest overall quantity of anthocyanins were 75.79–67.37 mg/100 g of dry matter. Based on the results of the analysis found that the highest content of anthocyanins in the cultivar Everest, and the lowest – cultivar John.

scholarly journals Energy productivity of grain sorghum depending on the elements of cultivation technology in the Right-Bank Forest-Steppe of Ukraine

2021 ◽  
pp. 122-130
Author(s):  
L. Pravdyva
Keyword(s):  
Grain Sorghum ◽  
Forest Steppe ◽  
Energy Yield ◽  
Research Station ◽  
National Academy Of Sciences ◽  
Energy Productivity ◽  
Sowing Time ◽  
Solid Biofuel ◽  
Cultivation Technology ◽  
The Right

In Ukraine, grain sorghum is an important grain crop used in bioethanol and solid fuel production. It stands out signifcantly from other grain crops by its economically valuable features, drought resistance, high productivity and universality of use. Grain sorghum is grown for use in the food industry (the main processed products are sorghum starch, glucosefructose syrups, alcohol, etc.), in fodder production and, more recently, in the energy industry. Therefore, the research of the elements of the cultivation technology, namely the sowing time and the depth of planting of grain sorghum seeds, is expedient and perspective. The article highlights the research results of the influence of the sowing time and the depth of planting seeds on the energy productivity of sorghum crops of the grain varieties ‘Dniprovskyi 39’ and ‘Vinets’ in the Right-Bank ForestSteppe of Ukraine. The purpose of the research is to establish the optimal sowing time and the depth of planting of grain sorghum seeds and to substantiate their influence on the crop energy productivity in condition of the Right-Bank Forest-Steppe of Ukraine. The research was conducted during 2016–2020 at the Bilotserkivska Research Station of the Institute of Bioenergy Crops and Sugar Beet of the National Academy of Sciences of Ukraine. It was found that the highest crop yield was obtained by sowing grain sorghum seeds in the 1st decade of May at a planting depth of 4–6 cm. At the same time, the grain yield of the ‘Dniprovskyi 39’ variety was 7.1–7.4 t/ha, of the ‘Vinets’ variety – 6.3–6.7 t/ha; the yield of biomass of the ‘Dniprovskyi 39’ variety was 40.2–44.4 t/ha, of the ‘Vinets’ variety – 37.3–39.5 t/ha. The highest bioethanol yield was obtained by sowing grain sorghum seeds in the 1st decade of May at a depth of planting of seeds of 4–6 cm. Cultivation of the ‘Dniprovskyi 39’ variety allowed to obtain 2.37–2.47 t/ha of bioethanol, the ‘Vinets’ variety – 2.08–2,21 t/ha. The yield of solid biofuel in this variant of the experiment was also the largest and amounted to 9.29–10.26 t/ha for the ‘Dniprovskyi 39’ variety and 8.62–9.12 t/ha for the ‘Vinets’ variety. The total energy yield from the obtained biofuel of the ‘Dniprovskyi 39’ variety was 210.66–228.98 GJ/ha, of the ‘Vinets’ variety – 192.37–203.95 GJ/ha. Key words: grain sorghum, varieties, sowing time, seeding depth, energy productivity.

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