scholarly journals Analysis of Agroclimatic Conditions of the Kadamzhay District of the Batken Region

2021 ◽  
Vol 7 (11) ◽  
pp. 112-117
Keyword(s):  
Comparative Analysis ◽  
Agricultural Production ◽  
Growth And Development ◽  
Meteorological Data ◽  
Great Influence ◽  
Climatic Conditions ◽  
Cultivated Plants ◽  
Hydrothermal Coefficient ◽  
Air Temperatures ◽  
Average Annual Temperature

Climatic conditions have a great influence on agricultural production. In agrometeorological developments, it is widely complex hydrometeorological indicators are used that determine the growth and development of cultivated plants. This paper presents an analysis of data on agroclimatic conditions of the Kadamjai district of the Batken region. Research results are shown meteorological data of the Markaz agrometeopost. Recently observed regional changes are analyzed climatic indicators on the territory of the Kadamjai region. A comparative analysis of the main meteorological data for two periods was carried out, the degree of moisture content of the numerical value of the hydrothermal coefficient (HC) of Selyaninov was calculated, deviations from the norm, the sum of active air temperatures, the degree of aridity of the region were determined, and a comparative analysis of the data for two periods was carried out. The analyzed increase in the average annual temperature is traced throughout the season. The revealed decrease in the amount of precipitation is also confirmed throughout the entire period with the exception of two months for 1991–2013. And also the increase in the average annual temperature and the decrease in the amount of precipitation are confirmed, confirms the decrease in the SCC in the calculations, which is the influence of changes in the meteorological regime.

scholarly journals Agroclimatic conditions of the Osijek area during referent (1961–1990) and recent (1991–2018) climate periods

2021 ◽  
Vol 54/55 (54/55) ◽  
pp. 55-64
Author(s):  
Darija Bilandžija ◽  
Silvija Martinčić
Keyword(s):  
Climate Change ◽  
Agricultural Production ◽  
Hot Spot ◽  
Precipitation Amount ◽  
Hydrothermal Condition ◽  
Climatic Conditions ◽  
Mitigation Measures ◽  
Recent Period ◽  
Air Temperatures ◽  
Climatic Elements

One highly important segment of agricultural production is the agroecological condition of a given area, including climatic conditions, which have been changing recently. Croatia belongs to a climate zone also known as a climate hot spot, characterised by a pronounced sensitivity to climate change. In order to determine if the climate has changed in the Osijek area, climatic elements and agroclimatic indicators were analysed for a referent period (1961∑1990) and a recent period (1991∑2018). The analysis shows that the climate has changed in the recent period as compared to the referent period. The identified climate changes manifest in higher mean air temperatures, higher precipitation amount, increased actual evapotranspiration and prolonged vegetation periods in the recent period. Furthermore, hydrothermal condition analysis shows that the ten warmest years and vegetation periods in the studied 58-year period were within the past 26 years. Due to the identified climate change and the assumption that the climate will continue to change in the future, adaptation and mitigation measures will have to be applied in agricultural production. For a more reliable assessment of agroclimatic conditions at certain area, it is recommended to analyse other climatic elements as well, such as the number of consecutive dry or rainy days above the critical precipitation threshold, wind, solar radiation, insolation, etc.

Climate Variability and peasant agriculture in Kélo in the south of Chad

2020 ◽  
Vol 7 (11) ◽  
pp. 16-30
Author(s):  
Abdoulay Mfewou ◽  
Julius Tata ◽  
Paul Nadji
Keyword(s):  
Climate Variability ◽  
Agricultural Production ◽  
Negative Impact ◽  
Local Development ◽  
Meteorological Data ◽  
Decision Makers ◽  
Annual Rainfall ◽  
Cultivated Plants ◽  
Rainfall Regime ◽  
Important Place

With its Sahelian climate, Chad presents climatic parameters which have a very negative impact on its agricultural productivity. Faced with this natural problem for peasant society, political decision-makers do little to support local adaptation mechanisms. The study in Kélo, southern Chad, (606.9 mm; 28.9 ° C) was carried out for five months. The survey was conducted with 140 heads of households randomly chosen from this area to collect information relating to the damage caused by climatic vagaries on the yields of cultivated plants and the analysis of meteorological data collected at the Kélo station by l 'Chad Institute of Agronomic Research for Development (ITRAD) on climate variability which shows the irregularities of the rains at their beginnings and / or at their ends, the shortening of the rainy season and, a slight rise in temperature. These rainfall irregularities, the main crops are experiencing yield reductions of the order of 70¨% of the average, approximately: 20-25 bags of paddy per hectare against 7-12 bags of paddy for rice, 4-5 bags / ha against 2-3 bags / ha for sorghum and pearl millet, 10-13 bags / ha against 6-9 bags / ha for peanuts, 600-900 kg / ha against 250-600 kg for cotton, etc. . In 2018, rainfall over time shows linear correlations established between cereal and cotton yields on the one hand, and those of annual rainfall on the other. The result also shows that there are no explicit linear relationships between these variables. This shows that, mere knowledge of the rainfall regime is not enough to explain the decline in agricultural production; because poor agricultural production can result from both poor and surplus water conditions and / or poor distribution of rains. It is recorded that food production per capita also decreases; this decline occupies a very important place in all policies of local development projects but weakly applied by rural decision-makers. Consequently, there is recurrent food insecurity, putting the farmer in a dependency on assistantship from outside the region.

scholarly journals Long-term tendencies in climate change of the Urals due to global warming

2020 ◽  
Vol 222 ◽  
pp. 05001
Author(s):  
A.A. Vasiliev ◽  
L.V. Ufimtseva ◽  
N.V. Glaz ◽  
D.Yu. Nokhrin
Keyword(s):  
Climate Change ◽  
Irrigation System ◽  
Growing Season ◽  
Climatic Conditions ◽  
Cultivated Plants ◽  
Hydrothermal Coefficient ◽  
Chelyabinsk Region ◽  
Annual Amount ◽  
Observation Period

During the observation period, the annual air temperature increased: in Yekaterinburg (1832-2018) by 3,1°C, in Zlatoust (1881-2018) by 2,2°C, in Kurgan (1894-2018) by 2,2°C and in Shadrinsk (1894-2018) by 2,1°C. The analogical climate change was noted for the period 1966-2018. The strongest warming is observed in winter (by 2,3-3,0°C), the weakest warming is observed in spring (by 0,8-1,7°C). We noted an increase the annual amount of precipitation in Ivdel (by 68,2 mm), Shadrinsk (by 50,9 mm) and Krasnoufimsk (by 43,6 mm). Also marked an increase the amount of precipitation during the growing season in Ivdel (by 43,9 mm), Shadrinsk (by 42,8 mm) and Krasnoufimsk (by 26,8 mm). The annual amount of precipitation increased in Chelyabinsk and Yekaterinburg, but the amount of precipitation during the growing season decreased in Kurgan. Favorable changes in the agro-climatic conditions of growing season were noted in Shadrinsk and Zlatoust. Unfavorable changes in hydrothermal coefficient for cultivated plants were noted in Chelyabinsk, Kurgan, Troitsk, Yekaterinburg and Bredy. Identified the need to introduce an irrigation system for cultivated plants of the southern districts (Chelyabinsk region).

scholarly journals THE FORMATION OF SOYBEAN PHYTOCENOSIS AND SEEDS QUALITY DEPENDING ON THE INTENSIFICATION FACTORS

2020 ◽  
pp. 98-109
Keyword(s):  
Growth And Development ◽  
Soybean Seed ◽  
Fertilizer Application ◽  
Climatic Conditions ◽  
Cultivated Plants ◽  
Ionic Form ◽  
Foliar Nutrition ◽  
Positive Role

The scale of soybeans cultivation in the world agriculture it takes a leading place among crops due to its valuable biological and economic properties. Soybeans are ahead of all other crops in terms of acreage growth. Today, the varietal spectrum has grown enormously and the gross grain yield of soybeans has increased. However, the realization of the genetic potential of modern varieties remains rather low and the average yield in Ukraine is 1,2-1,9 t/ha. First of all, maintaining and improving the quality of soybean seed is an important task, along with increasing yields. Vegetation of plants in the period of growth and development and their productivity depend in a certain way on the quality of the seed material, namely: germination, purity, sanitary condition, etc. The scientifically sound fertilizer application system combines basic and row fertilizers and fertilization of cultivated plants during the growing season. Foliar nutrition is called leaf uptake and absorption by the plant of nutrients, amino acids and growth regulators that the root system does not supply enough. The essence of such nutrition is that readily available nutrients of fertilizers enter the vegetative organs of the plants, quickly penetrate the protective wax barrier - cuticle, epidermis - and enter the cells of the plant. The permeability of epidermal cells of the multilayered cuticle depends on the concentration of the nutrient solution, the phase of growth and development, the area and nature of the cover of the leaf blade, climatic conditions, the time of feeding, the shape of the nutrient and other factors. The results of studying the influence of foliar fertilizers on the formation of soybean varieties phytocoenosis productivity and their influence on the qualitative indicators of seeds have been covered. The positive role of the foliar fertilizers action in the formation of individual productivity indicators of soybean plants was found. Foliar feeding is a measure of timely provision of balanced, composition and concentration of nutrients in ionic form – the most accessible for absorption by the leaf surface. Thus, the positive role of foliar fertilizers and varietal features of soybean in the formation of yield indicators was established. Thus, the two-time use of the Vuxal Microplant microfertilizer in the budding and green bean phases in the cultivation of Kent soybean variety allows obtaining positive indicators of the chemical composition of the seeds.

scholarly journals Growth and development of representatives of the genus Rosa L. in the Stavropol Botanical Garden

2022 ◽  
Vol 354 (11-12) ◽  
pp. 88-91
Author(s):  
S. A. Bardakova
Keyword(s):  
Growth And Development ◽  
Geographical Origin ◽  
Botanical Garden ◽  
Climatic Conditions ◽  
Flowering Period ◽  
Rosa Rugosa ◽  
Air Temperatures ◽  
Sum Of Effective Temperatures ◽  
Beginning Of Flowering ◽  
Phenological Phases

Relevance. To identify the features of the growth and development of species of roses of different geographical origin, to establish the biological minimum temperatures necessary for the beginning of flowering of representatives of the genus Rosa L., to study the morphological indicators of fruits.Methodology. The research material was 12 wild roses belonging to 4 sections: Canina Crep, Cinnamomeae DC, Luteae Crep, Pimpinellifoliae DC. The research was carried out using the methods of the Main Botanical Garden, floral and geographical analyses — according to Hrzhanovsky. A caliper was used to measure the length and diameter of 10 fruits. For the analysis of statistical data, the MS Excel table processor and the integrated MATLAB mathematical package were used.Results. The article presents the results of a study of species of roses in the Stavropol Botanical Garden of various geographical origin. The study involved 12 species belonging to 4 sections. The features of growth and development of plants in new soil and climatic conditions are revealed. The dates of the beginning of the main phenological phases andtheir duration have been established: spring regrowth of shoots, budding, beginning and end of flowering, fruiting. In the studied species of roses, the growing season begins in the first — second decade of March, flowering occurs in late May — early June, the fruits ripen in August — September. The dependence of the timing of the beginning of flowering in the studied roses on the dynamics of the accumulated average daily air temperatures and the sum of effective temperatures above 5 °C was revealed. Mathematically, it was proved that the lower limit of the air temperature required for the beginning of flowering of species of roses is +16 °C, when the sum of the average daily temperature air St° = 1007.75–1069.48 °С and St эф > 5 °С = 530.75–594.75 °С are accumulated. Early flowering species of roses include Rosa foetida Herrm., R. pendulina L., R. pimpinellifolia L., late flowering — R. caudata Baker and R. corymbifera Borkh. The shortest flowering period is in R. caudata Baker, R. jacutica Juz. and R. kamtschatica Vent. Representatives of those types mostly bloom once. Their flowers are formed on biennial and more mature shoots. The flowering period is 13–23 days. Rosa rugosa Thunb. blooms again, its flowering period is extended and long — from 40 to 48 days. All species of roses form fruits. The longest fruits are in R. pendulina L., R. caudata Baker, R. rugosa Thunb., R. corymbifera Borkh. and R. canina L., and large ones — in R. rugosa Thunb., R. marretii Lev. and R. roxburghi Tratt.

scholarly journals CFD Study of Airflow and Microclimate Patterns Inside a Multispan Greenhouse

2021 ◽  
Vol 16 ◽  
pp. 102-108
Author(s):  
M. El Jazouli ◽  
K. Lekouch ◽  
Α. Wifaya ◽  
L. Gourdo ◽  
L. Bouirden
Keyword(s):  
Agricultural Production ◽  
Climatic Conditions ◽  
Thermal Gradients ◽  
Flow Temperature ◽  
Tomato Crop ◽  
Greenhouse Climate ◽  
Physical Mechanisms ◽  
Air Temperatures ◽  
Side Walls ◽  
Good Agreement

Understanding and improving greenhouses requires the analysis and modelling of energy and mass exchange phenomena. The mastery of all these physical mechanisms can make it possible to propose technological solutions to control the greenhouse climate. This study presents an analysis and simulation of air flow, temperature and humidity patterns ,in ½-ha multi-span greenhouse with oblique side walls,covered by insect proof nets.The site is located in the coastal area of southern Morocco. The fundamental calculation of climatic conditions is based on CFD, wich uses the mass, momentum and energy conservation equations. The dynamic influence of the insect screens and tomato crop on airflow movement, was described ,using the concept of the porous medium approach proposed by Darcy and Forchheimer.The coupling of convective and radiative exchanges at the plastic roof cover is considered. A good agreement was observed between the measured and simulated values for inside air temperatures and relative humidity. Insect screens significantly reduced airflow and increased thermal gradients inside the greenhouse. The results clearly showed the heterogeneity of the greenhouse’s internal climate, which infects agricultural production in quantity and quality

Russian Policy of Agriculture Support and the Necessity of Its Modification after WTO Accession

2012 ◽  
pp. 132-149 ◽  
Author(s):  
V. Uzun
Keyword(s):  
Comparative Analysis ◽  
World Trade Organization ◽  
Agricultural Production ◽  
World Trade ◽  
The Us ◽  
The World ◽  
Wto Accession ◽  
The Eu ◽  
Agriculture Support

The article deals with the features of the Russian policy of agriculture support in comparison with the EU and the US policies. Comparative analysis is held considering the scales and levels of collective agriculture support, sources of supporting means, levels and mechanisms of support of agricultural production manufacturers, its consumers, agrarian infrastructure establishments, manufacturers and consumers of each of the principal types of agriculture production. The author makes an attempt to estimate the consequences of Russia’s accession to the World Trade Organization based on a hypothesis that this will result in unification of the manufacturers and consumers’ protection levels in Russia with the countries that have long been WTO members.

DROUGHT OCCURRENCE UNDER LITHUANIAN CLIMATIC CONDITIONS

2015 ◽  
Author(s):  
Laima TAPARAUSKIENĖ ◽  
Veronika LUKŠEVIČIŪTĖ
Keyword(s):  
Meteorological Data ◽  
Standardized Precipitation Index ◽  
Vegetation Period ◽  
Climatic Conditions ◽  
Precipitation Record ◽  
Calculation Step ◽  
Drought Conditions ◽  
The Standardized Precipitation Index ◽  
June July

This study provides the analysis of drought conditions of vegetation period in 1982-2014 year in two Lithuanian regions: Kaunas and Telšiai. To identify drought conditions the Standardized Precipitation Index (SPI) was applied. SPI was calculated using the long-term precipitation record of 1982–2014 with in-situ meteorological data. Calculation step of SPI was taken 1 month considering only vegetation period (May, June, July, August, September). The purpose of investigation was to evaluate the humidity/aridity of vegetation period and find out the probability of droughts occurrence under Lithuanian climatic conditions. It was found out that according SPI results droughts occurred in 14.5 % of all months in Kaunas region and in 15.8 % in Telšiai region. Wet periods in Kaunas region occurred in 15.8 %, and in Telšiai region occurrence of wet periods was – 18.8 % from all evaluated months. According SPI evaluation near normal were 69.7 % of total months during period of investigation in Kaunas and respectively – 65.5 % in Telšiai. The probability for extremely dry period under Lithuania climatic conditions are pretty low – 3.0 % in middle Lithuania and 2.4 % in western part of Lithuania.

INFLUENCE OF BIOSTIMULANTS ON THE IMMUNE PROTECTION OF CHICKENS

2019 ◽  
Keyword(s):  
Growth And Development ◽  
Digestive System ◽  
Great Influence ◽  
Egg Laying ◽  
Growth Spurt ◽  
Immune Protection ◽  
Internal Organs ◽  
State Growth ◽  
Active Peak

Among the animals of different species chickens react in greater numbers and more noticeable to a va-riety of growth biostimulators. There are great improvements on their general state, growth spurts and development of internal organs is quicker when they are injected with small portions. Such stimulation has a great influence not only on growth and development of chickens in their first period of life but also on health and productivity later on. The most active peak of reaction is when chicken is two months old. Their internal organs, especially the digestive system, develop earlier, their genitals appear earlier and they begin egg-laying much earlier too, when chickens are being fed those biostimulants. Slaughter meat yield becomes more and quality of meat improves with the influence of stimulators. A major disease pre-vention and healing effect can be reached, since most of the biostimulants raise immune system and re-sistance of the organism. It can be the only thing to justify their usage on animals. Tests show that the most typical growth spurt of birds is from fifteen to twenty percent in normal conditions. Growth spurts are also accompanied with the rise of resistance to different infections and activation of different physio-logical processes. Growth spurts can be twice or more than written here, but those spurts are usually short-timed and often accompanied with the dysfunction of different organs

scholarly journals Release of Postsenescent Dormancy in Leafy Spurge (Euphorbia esula) by Chilling

Weed Science ◽  
1988 ◽  
Vol 36 (6) ◽  
pp. 784-786 ◽  
Author(s):  
Stephen J. Harvey ◽  
Robert M. Nowierski
Keyword(s):  
Growth Rate ◽  
North America ◽  
Growth And Development ◽  
Leafy Spurge ◽  
Climatic Conditions ◽  
Euphorbia Esula ◽  
Flower Buds ◽  
Significant Growth ◽  
Number Of Stems

The growth and development of leafy spurge (Euphorbia esulaL. #3EPHES) collected during postsenescent dormancy and grown in the greenhouse was increasingly stimulated by chilling treatments longer than 14 days duration at 0 to 6 C. Production of stems with flower buds, primary flowers, and secondary flowers was greater in plants chilled for 42 days or more. The effects of chilling on total number of stems, number of strictly vegetative stems, or number of stems with vegetative branching were not significant. The height of the tallest stem per pot was influenced by chilling longer than 42 days. Growth rate also increased as a function of chilling duration. Based on our findings, we believe that there is little possibility that any significant growth can occur in the postsenescent period because of the prevailing climatic conditions found in areas of leafy spurge distribution in North America.

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