scholarly journals SEED REPRODUCTION OF PHLOX PANICULATA L. IN PERM REGION CLIMATIC CONDITIONS

2020 ◽  
pp. 103-108
Author(s):  
S. A. Shumikhin ◽  
◽  
M. A. Chertkova ◽  
L. V. Aksenova ◽  
◽  
...  
Keyword(s):  
Air Temperature ◽  
Weather Conditions ◽  
Climatic Conditions ◽  
Seed Productivity ◽  
Large Variability ◽  
Phlox Paniculata ◽  
Insect Pollinators ◽  
Complex Hybrid ◽  
Seed Propagation ◽  
Perm Region

During 2015-2018 in the conditions of the Perm region, the seed productivity of 6 varieties Phlox paniculata L. has been studied. The effectiveness of seed production and the success of seed propagation of the phlox depend on the weather conditions strongly, in particular on the air temperature and the amount of precipitation at the corresponding stages of plant development. This is determined by the activity of insect pollinators and effectiveness of pollination. In addition, the large variability of the studied indices in different flox cultivars is probably due to their complex hybrid nature, which reduces their reproductive abilities to varying degrees.

scholarly journals Identification of solar radiation effect on climatic indicators of the territory of Ukraine

2018 ◽  
Keyword(s):  
Solar Radiation ◽  
Solar Energy ◽  
Air Temperature ◽  
Temperature Regime ◽  
Atmospheric Pressure ◽  
Weather Conditions ◽  
Climatic Conditions ◽  
Practical Significance ◽  
Statistical Dependence ◽  
Physical Processes

Formulation of the problem. Understanding that solar energy is the main source of the majority of biological, chemical and physical processes on Earth, investigation of its influence on different climatic fields allows us to define the features of its space and hour fluctuations. To define radiation and temperature regime of the territory it is necessary to determine climatic features of the spreading surface, which absorbs and will transform solar energy. Considering the fact that modern climatic changes and their consequences cover all components of the system, today there is a problem of their further study for comprehension of atmospheric processes, modeling weather conditions on different territories depending on the properties. The purpose of the article is to determine interrelations between indexes of solar radiation (the Wolf's number) and air temperature, atmospheric pressure on the territory of Ukraine during 1965-2015, their change in space and time. Methods. Correlative method is one of the main methods of a statistical analysis which allows us to receive correlation coefficients of solar radiation variability indexes, air temperature, atmospheric pressure on the territory of the research. This technique estimates the extent of solar radiation influence on temperature regime of the territory and distribution of atmospheric pressure. Results. Coefficients of correlation, which characterize variability of solar radiation indexes, air temperature and atmospheric pressure on the explored territory have been received by means of statistical correlation analysis method. This technique allows us to estimate the degree and nature of solar radiation influence on a temperature regime of the territory and distribution of atmospheric pressure. It has been defined that direct correlative connection between indexes of solar radiation is characteristic of air temperature and atmospheric pressure fields. Significant statistical dependence between incoming solar radiation on the territory of Ukraine and atmospheric pressure has been noted during the spring and autumn periods mainly at the majority of stations. Between indexes of solar radiation and air temperature the inverse correlative connection in winter will be transformed to a direct connection during the spring and summer periods. Scientific novelty and practical significance. Physical processes, which happen in the atmosphere, are characterized by complex interrelations. For further research it is important to define solar radiation value and the extent of influence on climatic conditions.

scholarly journals Impact of weather conditions and sowing method on seed performance of meadow clover in the Middle Urals

2021 ◽  
Vol 59 (2) ◽  
pp. 178-185
Author(s):  
N. I. Kasatkina ◽  
Z. S. Nelyubina ◽  
I. Sh. Fatykhov
Keyword(s):  
Seed Production ◽  
Negative Impact ◽  
Weather Conditions ◽  
Climatic Conditions ◽  
Middle Urals ◽  
Seed Productivity ◽  
Weather Factors ◽  
Seed Formation ◽  
Hydrothermal Coefficient ◽  
Hydrothermal Regime

Seed production of perennial leguminous herbs, including meadow clover (Trifolium praténse), is complicated due to the natural and climatic conditions of the region. In Middle Urals, only two to three years out of ten are favorable for seed production. Estimation of influence of the hydrothermal regime of the growing season and the sowing method has been carried out in the experimental crop rotation of the Udmurt Research Institute of Agriculture, UdmFRC Ural Branch of the RAS with the seed grass stand of meadow diploid clover varieties Pelican and Trio, tetraploid variety Kudesnik It has been revealed that seed productivity of meadow clover on sod-podzolic medium loamy soil was more dependent on the prevailing hydrothermal regimes of vegetation periods, as well as on the variety’s ploidy. A relatively high seeds yield of the Pelican variety (2n) 444-593 kg/ha and Kudesnik variety (4n) 101-116 kg/ha was formed under conditions of insufficient and optimal moisture supply of the vegetation period with a hydrothermal coefficient of 0.67-1.41. With increase in hydrothermal coefficient p to 1.56-1.69, the seeds yield of the Trio variety (2n) decreased to 251-328 kg/ha, of the Kudesnik variety (4n) - to 77-91 kg/ha. Under the same conditions, according to the hydrothermal regime of vegetation, the Kudesnik clover variety formed a relatively larger number of stems and heads, however, the heads productivity was significantly inferior to diploid varieties, which ultimately affected its seed productivity. Sowing diploid varieties of meadow clover Pelican and Trio in the usual ordinary way (15 cm), tetraploid variety Kudesnik in a wide-row way (30 cm) allowed increasing seeds yield and thereby neutralizing the negative impact of weather factors. Sstudy of the seed formation features of meadow clover varieties differing in ploidy in contrasting agrometeorological conditions may be of interest in developing methods for optimizing their seed productivity.

scholarly journals Water consumption and irrigation regime of seed alfalfa under the conditions of regional climate change in the southern Steppe of Ukraine

2021 ◽  
pp. 52-66
Author(s):  
S. P. Holoborodko ◽  
O. M. Dymov
Keyword(s):  
Climate Change ◽  
Sandy Loam ◽  
Regional Climate ◽  
Regional Climate Change ◽  
Weather Conditions ◽  
Optimal Growth ◽  
Climatic Conditions ◽  
Irrigated Agriculture ◽  
Seed Productivity ◽  
Chestnut Soils

The article presents the results of scientific research to specify the seed productivity of alfalfa grown on irrigated and rainfed lands of the southern Steppe of Ukraine. It is proved that obtaining stably high yields of conditioned alfalfa seeds under the conditions of regional climate change is possible only providing an optimal supply of productive moisture in the soil, since in recent years the crop has been grown under high temperature conditions and insufficient precipitation. It was established that irrigation of seed alfalfa throughout the growing season regardless of cultivar and mowing, should be conducted in two interphase periods: "the beginning of regrowth (shoots) – early budding" and "the beginning of budding – beginning of flowering". In the first interphase period, it is necessary to create conditions for optimal growth and development of plants that is achieved by maintaining the level of pre-irrigation humidity in 0-100 cm layer in the range of 70-75% MMHC on dark chestnut soils and 55-60% – on sandy loam chernozems. In the second interphase period, it is necessary to provide optimal conditions for the development of production processes and the formation of conditioned seed yields that is achieved by inhibiting growth processes, since alfalfa tends to grow up. Therefore, the level of pre-irrigation humidity of the calculated layer on medium and heavy loamy soils should be maintained within 60-65% MMHC and 45-50% MMHC – on sandy loam chernozems. The analysis of changes in natural and climatic conditions carried out over the past years shows that in the subzone of the southern Steppe, alfalfa cultivation for seeds is possible only by providing the developed irrigated agriculture. Getting the deficit of natural moisture solved, combined with high availability of heat resources and fertile dark‑chestnut soils and southern chernozems, is an objective natural prerequisite for further growth of seed productivity of alfalfa and reducing its dependence on extreme weather conditions and, above all, in medium‑dry (75%) and dry (95%) precipitation years.

Modeling of air temperatures using a combination of TBATS and SVM models for various climatic locations in Europe

2020 ◽  
Author(s):  
Magdalena Gos ◽  
Piotr Baranowski ◽  
Jaromir Krzyszczak ◽  
Małgorzata Murat ◽  
Iwona Malinowska
Keyword(s):  
Time Series ◽  
State Space ◽  
Air Temperature ◽  
Weather Conditions ◽  
Exponential Smoothing ◽  
Climatic Conditions ◽  
State Space Models ◽  
Temperate Climate ◽  
Support Vector ◽  
Air Temperatures

<p>By modelling and forecasting  of meteorological  time  series it is possible to  improve   understanding  of  the  weather dynamics and fluctuations as a result of climate change . The most frequently used forecasting models are exponential smoothing, ARIMA models (Box and Jenkins, 1970), state-space models (Harvey, 1989) and innovations State Space Models (Hyndman et al., 2008).</p><p>The aim of this study was to check the effectiveness of the coupled TBATS and Support Vector Machines (SVM) model, supplied with some measured meteorological quantities to forecast air temperature for six years for four climatic localizations in Europe. The study was calculated from northern (Jokioinen in Finland), central (Dikopshof located in the west part of Germany and Nossen in the south part of Germany) and southern (Lleida in Spain) Europe to present different climatic conditions. Jokioinen city has a subarctic climate that has severe winters, with cool and short summers and strong seasonality. Lleida has a semi-arid climate with Mediterranean. Dikopshof represents maritime temperate climate. There are significant precipitation throughout the year in Dikopshof and Nossen. In the study we study on air temperature dataset collected on a daily basis from January 1st 1980 to December 31st 2010 (11322 days).</p><p>For all the studied sites coupled TBATS/SVM models occurred to be effective in predicting air temperature courses, giving an improved precision (up to 25%) in forecasting of the seasonality and local temperature variations, compared to pure SVM or TBATS modelling. The precision of prediction of the maximum and minimum air temperatures strongly depended on the dynamics of the weather conditions, and varied for different climatic zones.</p><p>This study has been partly financed from the funds of the Polish National Centre for Research and Development in frame of the project: MSINiN, contract number: BIOSTRATEG3/343547/8/NCBR/2017.</p><p> </p><p>Reference to a journal publication:</p><p>BOX, G.E.P. – Jenkins, G. 1970. Time Series Analysis: forecasting and control. Holden-Day, p. 20-31.</p><p>HARVEY A. 1989. Forecasting Structural Time Series Model and the Kalman Filter. New York, Cambridge University press., p. 32-41.</p><p>HYNDMAN, R.J. – KOEHLER, A.B. – ORD, J.K. – SNYDER, R.D. 2008. Forecasting with Exponential Smoothing: The State Space Approach. Springer-Verlag, p. 50-62.</p>

scholarly journals The Influence of Weather Conditions During Vegetation Period on Yielding of Twelve Determinate Tomato Cultivars

2012 ◽  
Vol 40 (2) ◽  
pp. 203 ◽  
Author(s):  
Elzbieta JEDRSZCZYK ◽  
Barbara SKOWERA ◽  
Joanna KOPCINSKA ◽  
Anna M. AMBROSZCZYK
Keyword(s):  
Total Yield ◽  
Weather Condition ◽  
Weather Conditions ◽  
Vegetation Period ◽  
Climatic Conditions ◽  
Marketable Yield ◽  
Large Variability ◽  
Tomato Yield ◽  
Third Stage ◽  
Tomato Cultivars

Tomato yield and biomass growth are closely linked to climatic conditions during vegetation period. Low temperatures and high precipitation in summer constitute the main cause of the large variability of field tomato yielding contributing to worsen the quality of the yield. The aim of the investigation was determining the influence of meteorological basic components in the growing season of the tomato to total and marketable yield of twelve determinate cultivars. Experiment took place in the open field in the Vegetable Experimental Station of Agricultural University of Mydlniki near Cracow in the years 2008 - 2010. A different sensitivity of examined tomato cultivars to the course of weather conditions was stated. ‘Ondraszek’ cultivar get the highest marketable yield in all years of investigation what indicate the most adaptation to variable weather conditions and cultivars ‘Hetman’, ‘Hubal’ and ‘Babinicz’ were the least adaptated and they gave the lowest yield. Analysis of the influence of weather condition on total and marketable yield of twelve determine tomato cultivars showed, that the sum and distribution of precipitation were decisive. High precipitations decreased total and marketable yield, whereas frequent and lower precipitations influenced favorable. Since from the third stage, i.e., the beginning of fruits setting to the beginning of ripening, a larger impact of meteorological factors on marketable than total yield had been observed. In the fruits ripening stage a marketable yield depended only on sum of temperatures.

Trends in the Phenology of Climber Roses under Changing Climate Conditions in Mazovia Lowland in Central Europe

2021 ◽  
Author(s):  
Marta Monder
Keyword(s):  
Central Europe ◽  
Air Temperature ◽  
Ornamental Plants ◽  
Ground Level ◽  
Weather Conditions ◽  
Frost Damage ◽  
Growth Conditions ◽  
Climatic Conditions ◽  
Climate Conditions ◽  
Urban Green Spaces

The genetic pool of valuable old ornamental cultivars and their in situ maintenance may be threated by climate change. Meanwhile, the ornamental plants like roses make up an important share of both gardens and urban green spaces, where they are particularly vulnerable to multistress growth conditions. The aim of this research was to evaluate the effect of changing climatic conditions on growth and flowering of 11 historic climber roses through long-term studies (2000-2017) conducted in Central Europe. The evaluation of plants consisted of assessment of frost damage and the timing of early phenological stages (starting of bud break, leaf unfolding) as well as gathering data on beginning, fullness and end of flowering and its abundance. Frost damage was not recorded in any year only in ‘Mme Plantier’, and did not occur for any cultivar after the winter in the years 2007, 2008, and 2014. Only a little damage to one-year shoots was recorded after the winter in the years 2015-2017. Frost damage to ‘Alberic Barbier’, ‘Albertine’, ‘Chaplin's Pink Climber’, ‘Orange Triumph clg’ and ‘Venusta Pendula’ led to pruning to ground level in every year excluding those listed above. Frost damage of once blooming roses limited their flowering; however, the many-year data-sets showed a trend for decreased frost damage and improved abundance of flowering, and these results can be interpreted as a response to the increase of average air temperature. The timing of bud breaking and leaf development in all climber roses was strictly correlated with average air temperature in the dormancy period. The reactions of climber roses to weather conditions confirmed the influence of climatic changes on ornamental crop plants in Central Europe, introducing the potential possibility for the wider application of climber roses, but without certainty of flowering every year.

scholarly journals Introduction to the Dynamics of Heat Transfer in Buildings

Energies ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 6469
Author(s):  
Bożena Babiarz ◽  
Władysław Szymański
Keyword(s):  
Heat Transfer ◽  
Air Temperature ◽  
Thermal Inertia ◽  
Weather Conditions ◽  
Climatic Conditions ◽  
Point Of View ◽  
Thermal Dynamics ◽  
Annual Cycles ◽  
Gains And Losses ◽  
Over Time

Changing climatic conditions cause the variability of the parameters of the building’s surroundings, which in turn causes both the gains and losses of heat to change over time. There is variability in both daily and annual cycles. Meeting the requirements of thermal comfort in rooms requires maintaining the required parameters, including constant temperature. Heat gains and losses must be balanced, and this balance is ensured through appropriate heating systems. At the same time, the above means that the demand for heating buildings is not constant but depends on external weather conditions and the energy efficiency of the building. This, in turn, affects the thermal inertia, causing changes in the partition temperature to occur slower than the changes in air temperature. Therefore, the amplitude of the heating power changes is not proportional to the amplitude of the outside air temperature change. The paper presents an example of the analysis of thermal dynamics in buildings. Various aspects of heat transfer in the building were investigated taking into account the transient conditions. The variability of temperature over time at different depths of the partition was analysed, showing the results graphically. The periodic variability of the outside air temperature and the intensity of solar radiation were described by the Fourier series. Moreover, the article shows the influence of the thermal insulation thickness of the external wall on the annual amplitude of temperature changes and on the duration of the heating season, which is important from the point of view of optimization.

scholarly journals STUDYING PARAMETERS OF SEED GRASS STAND OF PANNONIAN CLOVER (Trifolium pannonicum Jacq.) VARIETY 'SNEZHOK' AT LONG-TERM USE OF SOWING IN THE CONDITIONS OF THE KIROV REGION

2019 ◽  
Vol 2019 (4) ◽  
pp. 15-26
Author(s):  
Evgenia Valerievna Popova ◽  
Maria Gripas ◽  
Ekaterina Arzamasova
Keyword(s):  
Seed Yield ◽  
Dry Matter ◽  
Weather Conditions ◽  
Climatic Conditions ◽  
Seed Productivity ◽  
Scientific Center ◽  
North East ◽  
Grass Stand ◽  
Beginning Of Flowering

The article presents results of study of biological features of pannonian clover 'Snezhok' (created in the Federal Agricultural Scientific Center of North-East) at long-term use of a reproduction nursery (2011 sowing) for seeds. The soil-climatic conditions of research, the used material and assessment methods are described. The duration of periods of above-ground mass formation, height of plants, structure of stand and seed yield are determined. An elongation of the period from regrowth to the beginning of flowering with increasing of the stand's age was noted. The height of plants, yield of green mass and dry matter in the phase of head and seed ripening increased with the age of the grass stand. An increase in the number of generative stems, heads and mass of seeds per head was also observed. The level of seed productivity of pannonian clover depended more on the age of the grass stand than on the weather conditions of the growing season. We found that the potential seed productivity in favorable years can reach 8.48 kg/ha, while the actual seed yield on average over the years of research was 1.29 kg/ha, with fluctuations from 0.71 (2017) up to 4.63 kg/ha (2015).

scholarly journals Adaptive phenological response of autochthonous grape varieties to changes in weather and climatic conditions in the South of Russia

2020 ◽  
pp. 210-215
Author(s):  
Валерий Семенович Петров ◽  
Анна Александровна Марморштейн ◽  
Анна Александровна Лукьянова ◽  
Александр Григорьевич Коваленко ◽  
Владимир Александрович Волынкин
Keyword(s):  
Field Experiment ◽  
Air Temperature ◽  
Adaptive Response ◽  
Weather Conditions ◽  
Climatic Conditions ◽  
Stationary Field ◽  
The South ◽  
Beginning Of Flowering ◽  
Grape Varieties

В длительном стационарном полевом опыте на ампелографической коллекции (г.-к. Анапа) установлен тренд устойчивого влияния изменений погодных условий юга России на адаптивную фенологическую реакцию автохтонных сортов винограда Плечистик, Сибирьковый, Цимлянский черный. При повышении температуры воздуха на 1,2 - 5,0 °С период от распускания почек до полной физиологической зрелости ягод винограда у сорта Плечистик уменьшился на 22, Сибирьковый - 30, Цимлянский черный - 25 дней. Уменьшение произошло за счет смещения сроков и продолжительности фаз вегетаций. У сорта Плечистик вегетация от начала распускания глазков до начала цветения уменьшилась на 10, от начала цветения до начала созревания ягод на 11, от начала созревания до полной физиологической зрелости ягод на 23 дня, у сорта Сибирьковый соответственно на 8, 9 и 13 дней, у сорта Цимлянский черный на 7, 5 и 23 дня. Начало распускания глазков сместилось в более поздние сроки у сорта Плечистик на 1 день, Сибирьковый на 5 дней, Цимлянский черный на 2 дня. Начало цветения сместилось в ранние сроки у сорта Плечистик на 9 дней, Сибирьковый на 3 дня, Цимлянский черный на 5 дней. Начало созревания ягод винограда у сорта Плечистик сдвинулось на 1 день в поздний срок, Сибирьковый на 12 дней и Цимлянский черный на 3 дня в ранние сроки. Полная физиологическая зрелость ягод сместилась в ранние сроки у сорта Плечистик на 21 день, Сибирьковый на 25 дней и Цимлянский черный на 23 дня. При положительной адаптивной реакции на повышение температуры воздуха у сортов сохранились без изменений ростовые и продукционные процессы. In a long-term stationary field experiment on the ampelographic collection (Anapa), a trend for the stable influence of changes in weather conditions in the South of Russia on the adaptive phenological reaction of autochthonous grape varieties ‘Pletchistik’, ‘Sibirkovy’, ‘Tsimlyansky Cherny’ was established. With an increase in air temperature by 1.2 - 5.0 °С, the period from budbreak to physiological ripeness of the ‘Pletchistik’ variety decreased by 22, ‘Sibirkovy’ - 30, ‘Tsimlyansky Cherny’ - 25 days. The decrease was due to the shift in the timing and duration of vegetative stages. For ‘Pletchistik’ variety, the period from budbreak to flowering decreased by 10, from flowering to veraison by 11, from veraison to physiological ripeness by 23 days; for ‘Sibirkovy’ variety, by 8, 9 and 13 days respectively; for the variety ‘Tsimlyansky Cherny’ by 7, 5 and 23 days. The beginning of budbreak shifted to later dates: for ‘Pletchistik’ variety by 1 day, for ‘Sibirkovy’ by 5 days, for ‘Tsimlyansky Cherny’ by 2 days. The beginning of flowering shifted to earlier dates: for ‘Pletchistik’ variety by 9 days, for ‘Sibirkovy’ by 3 days, for ‘Tsimlyansky Cherny’ by 5 days. The beginning of veraison for ‘Pletchistik’ variety shifted by 1 day later, for ‘Sibirkovy’ by 12 days and for ‘Tsimlyansky Cherny’ by 3 days earlier. The beginning of full physiological ripeness shifted earlier for all varieties: ‘Pletchistik’ by 21 days, ‘Sibirkovy’ by 25 days and ‘Tsimlyansky Cherny’ by 23 days. With a positive adaptive response to an increase in air temperature, the growth and productional processes of varieties remained without changes.

scholarly journals Possible impacts of temperature changes on recreational and tourist activities in Ukraine’s regions

2017 ◽  
pp. 18-28
Author(s):  
T. Safranov ◽  
V. Khokhlov ◽  
A. Volkov
Keyword(s):  
Climate Change ◽  
Air Temperature ◽  
Weather Conditions ◽  
Climatic Conditions ◽  
The Black Sea ◽  
Change Scenario ◽  
Significant Deterioration ◽  
Climate Conditions ◽  
Temperature Changes ◽  
Recreation And Tourism

Temperature is one of the main meteorological parameters. It determines the weather and climatic conditions, and impacts on human activities. Weather and climate conditions (precisely air temperature) are the most important factors which affect natural and recreational resources and also stipulate recreational and tourist activities. The article discusses the possible impact of air temperature changes from 2021 to 2050 on recreational and tourist activities in Ukrainian regions. We have analyzed the data gathered by 85 observation stations which are located in various Ukrainian regions. The analysis was based on scenario due to average level of greenhouse gases emissions (medium climate change pattern) for 30 years (2021-2050). The coastal zone in North-western part of the Black Sea has one of the high level of recreational-tourism potential. The fore-cast in this region makes rather small increasing of the temperature in summer time. So, it has not significant influence to the present forms of recreation and tourism activities. The research indicates that changes in average annual, average summer and winter air temperatures according to the scenario will not significantly affect the possibility of summer recreational and tourism activities. Also climate changes will not affect sustainable development of recreation and the level of thermal impact on recreants (tourists) within Ukrainian regions. Following this climate change scenario we don’t anticipate significant deterioration of weather conditions for winter recreation and tourism activities, especially for the Ukrainian Carpathians.

Sign in / Sign up

Export Citation Format

Share Document