scholarly journals Climatic indices in viticulture

2020 ◽  
pp. 26-28
Author(s):  
Евгений Александрович Рыбалко
Keyword(s):  
Drought Index ◽  
Climatic Factors ◽  
Climatic Conditions ◽  
International Organization ◽  
Growing Period ◽  
Air Temperatures ◽  
Joint Influence ◽  
Bioclimatic Index ◽  
Method Of Assessment ◽  
Cool Night

В статье рассмотрен вопрос важности анализа климатических условий местности при закладке виноградников. Дан обзор различных подходов к количественной оценке параметров климата. Освещена необходимость расчётов не только отдельных показателей температуры, влажности, освещённости, но и применения комплексных индексов, отражающих совместное влияние климатических факторов на процессы роста и развития виноградного растения. Приведены как традиционные, широко известные (сумма активных и эффективных температур воздуха, гидротермический коэффициент Селянинова), так и редко применяемые индексы (гелиотермический индекс Branas G., биоклиматический индекс Constantinescu Gh.). Рассмотрена методика оценки климатических ресурсов применительно к винограду, предложенная Международной организацией винограда и вина, согласно которой рекомендовано использовать такие показатели как средняя температура вегетационного периода, индекс Уинклера (Winkler Index), биологически эффективная сумма температур, индекс Хьюглина (Huglin Heliothermal Index), индекс холодных ночей (Cool Night Index), индекс Фрегони (Fregoni Index), индекс сухости (Drought index). Приведены формулы для расчёта величины рассматриваемых индексов. Выделены наиболее часто применяемые индексы из перечня, рекомендованного Международной организацией винограда и вина. The article deals with the importance of the analysis of climatic conditions of the area for planting of the vineyards. Various approaches to the quantitative assessment of climate parameters are reviewed. The necessity of calculations of not only separate indicators of temperature, humidity, light intensity, but also of the application of complex indices reflecting joint influence of climatic factors on the processes of growth and development of grapes is highlighted. Both traditional, well-known (sum of active and effective air temperatures, hydrothermal coefficient of Selyaninov) and rarely used indices (solar thermal index of Branas G., bioclimatic index of Constantinescu Gh.) are given. The method of assessment of climatic resources in relation to grapes, proposed by the International Organization of Vine and Wine, according to which it is recommended to use such indicators as the average temperature of the growing period, the Winkler Index, biologically effective amount of temperature, the Huglin Heliothermal Index, the Cool Night Index, the Fregoni Index, the Drought index. The formulas for calculating the value of the considered indices are given. The most frequently used indices from the list recommended by the International Organization of Vine and Wine are highlighted.

scholarly journals AGROBIOLOGICAL FEATURES OF SUNFLOWER HYBRIDS CULTIVATION UNDER THE CONDITIONS OF THE NON-CHERNOZEM ZONE

2019 ◽  
pp. 11-15
Author(s):  
Дмитрий Виноградов ◽  
Dmitri Vinogradov ◽  
Марина Макарова ◽  
Marina Makarova
Keyword(s):  
Oil Content ◽  
Gray Forest Soil ◽  
Climatic Conditions ◽  
Average Height ◽  
Growing Period ◽  
Air Temperatures ◽  
Hybrid Plants ◽  
Productive Area ◽  
Rain Fall ◽  
High Yields

The purpose of the research is to evaluate the productivity of sunflower hybrids in the climatic conditions of the Non-chernozem zone of Russia. In 2013-2017, in the Ryazan region, field experiment was conducted on dark gray forest soil, the Hungarian sunflower hybrids BA-306, Samanta, Nova, Walcer, Larissa were subjected to studies. The natural and climatic conditions of the southern part of the Ryazan region are favorable for the cultivation of oilseeds and are characterized by the following indicators: the sum of the active air temperatures is 2200-2350°C, the rain-fall during the growing period is 510-560 mm. As a result of the measurements of the main morphometric parame-ters, Larissa and Samanta, were identified as the tallest hybrids. The average height of plants produced by these hybrids reached 219 and 205 cm, respectively. The BA-306 hybrid (176 cm) had the smallest parameters. Walcer hybrid plants formed the largest area of the assimilation surface and amounted to 31.6 thousand m2/ha. The area of the leaves of other Hungarian sunflower hybrids was less by 11.0-19.9%. The lowest values of this indicator were observed in the hybrid Nova. In Samanta, Walcer and Larissa hybrids, the diameter of the anthodium exceed-ed 21 cm. However, the Samanta hybrid anthodium resulted in the smallest productive area – 73.5%. The largest mass of 1000 seeds was obtained from hybrids BA-306 and Nova and amounted to 61.4 and 62.2 g respectively. Due to the yield, the Hungarian hybrids were arranged in the following order: Nova, Samanta, Larissa, BA-306, Walcer. This pattern was observed both taken from average values over the years of research, during each year separately. The oil content of all studied sunflower hybrids was high and amounted to 48.4-51.2%. The ability of Hungarian sun-flower hybrids to produce high yields of good quality when grown in the conditions of the Ryazan region, belonging to the southern part of the Non-Chernozem zone, is established.

Working collection formation of apple-tree (Malus domestica Mill.) gene pool for priority breeding trends

2019 ◽  
pp. 101-108
Author(s):  
T.I. Krasulia
Keyword(s):  
Climatic Factors ◽  
Venturia Inaequalis ◽  
High Water ◽  
Laboratory Method ◽  
Apple Trees ◽  
Growing Period ◽  
Breeding Efficiency ◽  
Abiotic And Biotic Factors ◽  
Distinguished Varieties ◽  
Spring Frosts

Aim. To define the priority trends of apple breeding in the southern steppe of Ukraine and to identify varieties – sources of high valuable-for-breeding indices for building up a working collection. Results and Discussion. Spring frosts and wet weather in May-June contributing to development of the scab pathogen (Venturia inaequalis), high temperature and water deficit in the 2nd half of the growing period, when fruits grow and ripen, are the major stress weather/climatic factors for apple trees in the southern steppe of Ukraine. Therefore, the priority in breeding is given to developing varieties that would be resistant to several unfavorable factors. At the same time, commercial use of new varieties is possible provided high commercial quality indicators of fruits. High resistance of buds to spring frosts was observed in varieties Vechirnia Zoria, Moldavskoye Krasnoye, and Prima. Oligogenic varieties (genes Vm and Vf), including Harant, Skifske Zoloto, and Liberty, showed no signs of scab development. Varieties with polygenic resistance to this disease were identified; they included Vechirnia Zoria, Ornament, Carola. Drought-tolerant varieties with high water-holding capacity of leaves and their turgor restoration after wilting, including Carola, Florina, and Prima, were selected by a laboratory method. Assessment of drought tolerance in the field made it possible to enrich this group with numerous varieties. Varieties giving fruits with high commercial qualities on insufficient water availability, such as Vechirnia Zoria, Harant, Moldavskoye Krasnoye, Ornament and others, were distinguished. Varieties combining resistance to several unfavorable abiotic and biotic factors with high marketability traits of fruits were singled out. Among them. Harant, Delicious Spur, Liberty, and Prima should be mentioned. Conclusions. The development of varieties with complex tolerance to spring frosts, drought, scab pathogen and high qualities of fruits is the priority trend in the breeding of apple trees in the southern steppe of Ukraine. Varieties - sources of individual valuable traits and their various combinations were identified. Varieties Vechirnia Zoria, Moldavskoye Krasnoye, Ornament, and Golden Resistant combine the maximum number of valuable-for-breeding features. It is varieties-sources of several traits that should make up a working collection of apple trees to increase the breeding efficiency.

scholarly journals Radial Growth Response of European Larch Provenances to Interannual Climate Variation in Poland

Forests ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 334
Author(s):  
Norbert Szymański ◽  
Sławomir Wilczyński
Keyword(s):  
Radial Growth ◽  
Climatic Factors ◽  
Principal Component ◽  
Climatic Conditions ◽  
Growth Responses ◽  
European Larch ◽  
Temperature And Precipitation ◽  
Provenance Trials ◽  
High Precipitation ◽  
Climatic Elements

The present study identified the similarities and differences in the radial growth responses of 20 provenances of 51-year-old European larch (Larix decidua Mill.) trees from Poland to the climatic conditions at three provenance trials situated in the Polish lowlands (Siemianice), uplands (Bliżyn) and mountains (Krynica). A chronology of radial growth indices was developed for each of 60 European larch populations, which highlighted the interannual variations in the climate-mediated radial growth of their trees. With the aid of principal component, correlation and multiple regression analysis, supra-regional climatic elements were identified to which all the larch provenances reacted similarly at all three provenance trials. They increased the radial growth in years with a short, warm and precipitation-rich winter; a cool and humid summer and when high precipitation in late autumn of the previous year was noted. Moreover, other climatic elements were identified to which two groups of the larch provenances reacted differently at each provenance trial. In the lowland climate, the provenances reacted differently to temperature in November to December of the previous year and July and to precipitation in September. In the upland climate, the provenances differed in growth sensitivity to precipitation in October of the previous year and June–September. In the mountain climate, the provenances responded differently to temperature and precipitation in September of the previous year and to precipitation in February, June and September of the year of tree ring formation. The results imply that both climatic factors and origin (genotype), i.e., the genetic factor, mediate the climate–growth relationships of larch provenances.

Impact of climatic conditions on the parameters of failure flow of military vehicles

2021 ◽  
pp. 095440702110202
Author(s):  
Nikolaj Dobrzinskij ◽  
Algimantas Fedaravicius ◽  
Kestutis Pilkauskas ◽  
Egidijus Slizys
Keyword(s):  
Climatic Factors ◽  
Armed Forces ◽  
Climatic Conditions ◽  
Operating Conditions ◽  
Technical Equipment ◽  
Factors Affecting ◽  
Military Vehicles ◽  
Equipment Reliability ◽  
Number Of Factors ◽  
The Impact

Relevance of the article is based on participation of armed forces in various operations and exercises, where reliability of machinery is one of the most important factors. Transportation of soldiers as well as completion of variety of tasks is ensured by properly functioning technical equipment. Reliability of military vehicles – armoured SISU E13TP Finnish built and HMMWV M1025 USA built were selected as the object of the article. Impact of climatic conditions on reliability of the vehicles exploited in southwestern part of the Atlantic continental forest area is researched by a case study of the vehicles exploitation under conditions of the climate of Lithuania. Reliability of military vehicles depends on a number of factors such as properties of the vehicles and external conditions of their operation. Their systems and mechanisms are influenced by a number of factors that cause different failures. Climatic conditions represent one of the factors of operating load which is directly dependent on the climate zone. Therefore, assessment of the reliability is started with the analysis of climatic factors affecting operating conditions of the vehicles. Relationship between the impact of climatic factors and failure flow of the vehicles is presented and discussed.

scholarly journals Soil Nitrogen Dynamics in a Managed Temperate Grassland Under Changed Climatic Conditions

Water ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 931
Author(s):  
Mona Giraud ◽  
Jannis Groh ◽  
Horst H. Gerke ◽  
Nicolas Brüggemann ◽  
Harry Vereecken ◽  
...  
Keyword(s):  
Nitrogen Uptake ◽  
Inorganic Nitrogen ◽  
Nitrogen Concentration ◽  
Nitrogen Dynamics ◽  
Climatic Conditions ◽  
Undisturbed Soil ◽  
Nitrogen Emissions ◽  
Growing Period ◽  
Grassland Type ◽  
Wide Range

Grasslands are one of the most common biomes in the world with a wide range of ecosystem services. Nevertheless, quantitative data on the change in nitrogen dynamics in extensively managed temperate grasslands caused by a shift from energy- to water-limited climatic conditions have not yet been reported. In this study, we experimentally studied this shift by translocating undisturbed soil monoliths from an energy-limited site (Rollesbroich) to a water-limited site (Selhausen). The soil monoliths were contained in weighable lysimeters and monitored for their water and nitrogen balance in the period between 2012 and 2018. At the water-limited site (Selhausen), annual plant nitrogen uptake decreased due to water stress compared to the energy-limited site (Rollesbroich), while nitrogen uptake was higher at the beginning of the growing period. Possibly because of this lower plant uptake, the lysimeters at the water-limited site showed an increased inorganic nitrogen concentration in the soil solution, indicating a higher net mineralization rate. The N2O gas emissions and nitrogen leaching remained low at both sites. Our findings suggest that in the short term, fertilizer should consequently be applied early in the growing period to increase nitrogen uptake and decrease nitrogen losses. Moreover, a shift from energy-limited to water-limited conditions will have a limited effect on gaseous nitrogen emissions and nitrate concentrations in the groundwater in the grassland type of this study because higher nitrogen concentrations are (over-) compensated by lower leaching rates.

scholarly journals Improved Rice Technology Adoption: The Role of Spatially-Dependent Risk Preference

Agriculture ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 691
Author(s):  
Omotuyole Isiaka Ambali ◽  
Francisco Jose Areal ◽  
Nikolaos Georgantzis
Keyword(s):  
Field Experiments ◽  
Climatic Factors ◽  
Risk Preferences ◽  
Risk Preference ◽  
Probit Model ◽  
Climatic Conditions ◽  
High Yield ◽  
Risk Attitudes ◽  
Policy Action ◽  
Rice Varieties

This study analyses farmers’ adoption of improved rice technology, taking into account farmers’ risk preferences; the unobserved spatial heterogeneity associated with farmers’ risk preferences; farmers’ household and farm characteristics; farm locations, farmers’ access to information, and their perceptions on the rice improved varieties (i.e., high yield varieties, HYV). The study used data obtained from field experiments and a survey conducted in 2016 in Nigeria. An instrumental-variable probit model was estimated to account for potential endogenous farmers’ risk preference in the adoption decision model. Results show that risk averse (risk avoidant) farmers are less likely to adopt HYV, with the spatial lags of farmers’ risk attitudes found to be a good instrument for spatially unobserved variables (e.g., environmental and climatic factors). We conclude that studies supporting policy action aiming at the diffusion of improved rice varieties need to collect information, if possible, on farmers’ risk attitudes, local environmental and climatic conditions (e.g., climatic, topographic, soil quality, pest incidence) in order to ease the design and evaluation of policy actions on the adoption of improved agricultural technology.

scholarly journals Projections of surface air temperature required to sustain permafrost and importance of adaptation to climate change in the Daisetsu Mountains, Japan

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Tokuta Yokohata ◽  
Go Iwahana ◽  
Toshio Sone ◽  
Kazuyuki Saito ◽  
Noriko N. Ishizaki ◽  
...  
Keyword(s):  
Climate Model ◽  
Surface Air Temperature ◽  
Climatic Conditions ◽  
Alpine Ecosystems ◽  
Adaptation To Climate Change ◽  
Freezing And Thawing ◽  
Air Temperatures ◽  
Statistical Relationships ◽  
The Stability ◽  
Slope Displacement

AbstractPermafrost is known to occur in high mountainous areas such as the Daisetsu Mountains in Japan, which are located at the southernmost limit of the permafrost distribution in the world. In this study, areas with climatic conditions suitable for sustaining permafrost in the Daisetsu Mountains are projected using bias-corrected and downscaled climate model outputs and statistical relationships between surface air temperatures and permafrost areas. Using freezing and thawing indices, the size of the area in the Daisetsu Mountains where climatic conditions were suitable for permafrost were estimated to be approximately 150 km2 in 2010. Under the RCP8.5 scenario, this area is projected to decrease to about 30 km2 by 2050 and it is projected to disappear by around 2070. Under the RCP2.6 scenario, the area is projected to decrease to approximately 20 km2 by 2100. The degradation of mountain permafrost could potentially affect the stability of trekking trails due to slope displacement, and it may also have deleterious effects on current alpine ecosystems. It is therefore important to accurately monitor changes in the mountain ecosystem environment and to implement measures to adapt to an environment that is projected to change significantly in the future.

Influence of Natural and Climatic Factors on Water Horizons Protection Degree in Site Evaluation for Radioactive Waste Disposal

2021 ◽  
Vol 24 (3) ◽  
pp. 301-310
Author(s):  
N. V. Harbachova ◽  
N. D. Kuzmina ◽  
N. V. Kulich ◽  
S. N. Yatsko ◽  
J. A. Korchova
Keyword(s):  
Radioactive Waste ◽  
Climatic Factors ◽  
Probabilistic Approach ◽  
Groundwater Vulnerability ◽  
Climatic Conditions ◽  
Radioactive Waste Disposal ◽  
Climatic Impact ◽  
Influence Zone ◽  
Site Evaluation ◽  
Numerical And Analytical Methods

In this paper, natural (geological and hydrological) and climatic impact conditions on the influence zone for two different sites of radioactive waste disposals have been studied. Probabilistic approach to assessment of the groundwater vulnerability from radionuclide contamination during disposal of radioactive waste is developed. As to climatic conditions, an effective numerical and analytical methods for annual precipitation rates assessment of rare recurrence have been proposed which allow to take into account uncertainties of rare events as well.

ASSESSMENT OF THE INFLUENCE OF THE MAIN CLIMATIC FACTORS ON THE YIELD OF WINTER CEREAL CROPS ON THE TERRITORY OF BELARUS FOR FORECASTING PURPOSES

2021 ◽  
pp. 41-48
Author(s):  
Halina A. Kamyshenka
Keyword(s):  
Computational Models ◽  
Climatic Factors ◽  
Climatic Conditions ◽  
Yield Variability ◽  
Cereal Crops ◽  
Winter Rye ◽  
Statistical Assessment ◽  
Winter Cereal ◽  
Temperature And Precipitation

The results of a statistical assessment of the influence of changing weather and climatic conditions of the territory of Belarus on the productivity of the main winter cereal crops are presented in order to build computational models of productivity. The calculations were made with respect to the climatic component as a predictor, taking into account the deviations of air temperature and precipitation from the long-term climatic norm of months that have the most significant effect on the yield of the studied crops. For winter rye and wheat, adequate models of yield variability have been built. The research results are relevant for solving forecasting problems.

A bioclimatic index of human survival times in the Antarctic

Polar Record ◽  
1987 ◽  
Vol 23 (147) ◽  
pp. 651-659 ◽  
Author(s):  
C. R. de Freitas ◽  
L. V. Symon
Keyword(s):  
Core Temperature ◽  
Climatic Conditions ◽  
Survival Times ◽  
Climatological Data ◽  
Human Survival ◽  
Winter Conditions ◽  
Normal Core ◽  
Bioclimatic Index ◽  
Extreme Cold ◽  
The Antarctic

AbstractAn index of human ‘survival time outdoors in extreme cold’ (STOEC) has been developed, using body-atmosphere energy budget modelling procedures. The index, which is applicable in places like Antarctica where only limited climatological data are available, is based on the calculated rate of fall of core temperature from 37°C to 27°C of a standard inactive healthy subject in full polar clothing.Applied to data from 12 Antarctic stations it indicates relative severity of their mean and extreme climatic conditions. The severest winter conditions become lifethreatening after only about 20 minutes. At most stations in winter, exposure outdoors for more than two hours would be dangerous. Conditions at all coastal stations in summer are mildenough to allow a normal core temperature to be maintained. The index has many applications, for example estimating likely survival times of immobilized accident victims and guidelines for duration of work periods outside.

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