scholarly journals Influence of environmental conditions on the virulence and distribution of Orobanche cumana Wallr. in the Republic of Moldova

OCL ◽  
2018 ◽  
Vol 26 ◽  
pp. 3 ◽  
Author(s):  
Maria Duca ◽  
Steliana Clapco ◽  
Maria Nedealcov ◽  
Lidia Dencicov

The parasitic angiosperm Orobanche cumana is present in the main sunflower-producing countries around the world. In recent years, more aggressive races of broomrape have evolved and the parasite has rapidly spread to new areas. A similar trend has been observed in the Republic of Moldova. At the beginning of 1950s, broomrape was detected in Moldova, especially in the southern areas. Currently, all the known races of Orobanche are present in the country and the parasite has expanded considerably on new areas in the center and north. Based on these results and the data reported by other authors, related to influence of climate change on the phytosanitary situation, we studied the interdependence between the climate and the distribution of Orobanche cumana Wallr. over different parts of the Republic of Moldova. Prevalence of broomrape infection mainly in the southern and central part of the Republic of Moldova and its sporadic presence in the northern part can be influenced, not only by short rotations, type of sunflower hybrids grown and soil parameters, but also by the weather conditions such as higher temperatures and lower humidity in the south and center. Based on multiannual data and trends observed in recent years, characterized by an increase in temperature and decrease of relative humidity, we conclude that climate change will create favorable conditions for infecting sunflower plants in all the areas where sunflowers are grown, including the expansion of broomrape to the north of Moldova.

Infolib ◽  
2020 ◽  
Vol 24 (4) ◽  
pp. 2-8
Author(s):  
Umida Teshabaeva ◽  

The article is devoted to the history of the Tashkent Public Library, at the origins of which were prominent scientists of that time, to the present day of the National Library of Uzbekistan. The library fund has more than 7.5 million items in 75 languages of the world. The National Library is the main methodological center of information and library institutions of the Republic. Creation of favorable conditions for readers is one of the priority tasks of the library, which is improved every year by the introduction of new technologies for obtaining information in an operational way. Thanks to membership in the International Consortium «eIFL», users have access to 38 foreign educational databases, 12 of which are licensed. Also, library readers get access to national and world educational collections in different languages of the world.


Author(s):  
Galina Mindru ◽  

In the Republic of Moldova, the main factor contributing to the floods is the torrential rains from the warm semester of the year, which create favorable conditions for triggering strong, sometimes catastrophic floods in the rivers of the republic, especially in the smaller ones. During the study period, 40 floods with significant damage were recorded in the country, with an annual frequency ranging from 0 to 12 cases. In the administrativeterritorial profile, the damages caused by the aforementioned floods varied greatly. Based on the statistical data, a digital map was developed reflecting the degree of exposure of the territory of the Republic of Moldova in the administrative-territorial aspect to the mentioned risk, expressed by the value of the damages caused. In order to reduce the impact caused by the flood floods, measures have been developed to prevent, reduce and combat the negative effects of that risk.


2018 ◽  
Vol 15 ◽  
pp. 231-237 ◽  
Author(s):  
Martín José Montero-Martínez ◽  
Julio Sergio Santana-Sepúlveda ◽  
Naydú Isabel Pérez-Ortiz ◽  
Óscar Pita-Díaz ◽  
Salvador Castillo-Liñan

Abstract. It is a matter of current study to determine potential climate changes in different parts of the world, especially in regions like a basin which has the potential to affect socioeconomic and environmental issues in a defined area. This study provides a comparison between several climate change indices trends of two very different basins in Mexico, one located in the northern arid region (the Conchos River basin) and the other in the southern humid area (the Usumacinta River basin). First, quality control, homogenization, and completion of the missing data were applied before calculating the climate change indices and their respective trends for the combined period 1961–1994. A clear warming signal was found for the two basins in addition to an increment in the DTR, in agreement with other studies in Mexico. Also, the Conchos River basin was found to be more humid and the Usumacinta River basin drier, in accordance to a supposed seesaw behavior indicated in previous analysis.


2020 ◽  
Vol 48 (2) ◽  
pp. 285-296
Author(s):  
Andrzej Połosak

Borneo, the largest of the Sunda Islands, was already divided during the colonial period. Its southern part belonged to the Dutch East Indies. To the north, there were the territories of North Kalimantan, part of the British Federation of Malaya. The President of the Republic of Indonesia, Ahmed Sukarno, supported anti-colonial movements around the world. Moreover, in 1962, Indonesia launched a military operation that attached West Irian, a Dutch overseas territory in the eastern tip of New Guinea. This operation gained international support.When Great Britain revised its Far East policy in the late 1950s, London gave independence to the Federation of Malaya, known as Malaysia since that time. From then on, the country was part of the Commonwealth of Nations. President Sukarno, remembering the success of the 1962 operation, considered newly established Malaysia to be only a new incarnation of English colonial politics. In April 1963, Jakarta began invading northern Borneo to annex these lands to Indonesia. The invasion met with strong resistance from the Commonwealth of Nations. After three years of struggle, the territorial status quo from before the conflict was re-established. The invasion and its high costs shook President Sukarno’s position. As a result, he was overthrown by General Suharto and the previously pursued policy of supporting anti-colonialism ended, although Indonesia remained a member of the Non-Aligned Movement, one of whose spiritual fathers was Ahmed Sukarno.


2017 ◽  
Vol 10 (3) ◽  
pp. 25-36 ◽  
Author(s):  
Regina A. Uhl

Abstract The function of the plan-schematic settlements of the so called Cucuteni-Tripolye-Complex in the north-western pontic region remains enigmatic and yet, these structures haven´t been approached holistically. The article aims to address basic aspects as the construction plan and the chronology at one of these sites, the settlement Petreni in the Republic of Moldova. Beyond that, it shall be outlined, in how far the settlements served as mnemonic places. Deliberately burnt houses in these settlements represent a characteristic feature, which do not only resemble the end of a settling stage - they rather mark performative acts and may be associated with the death of a household or a community member. As the burnt house debris has not been removed or levelled, it reflects a visible marker for preceding generations among the living - such structures constitute distinctive mechanisms of commemoration and mirror communities which share a common set of experiences and knowledge.


2021 ◽  
Vol 36 ◽  
pp. 01003
Author(s):  
Elena Vologzhanina ◽  
Galina Batalova

The results of the study of 12 varieties and promising lines of glumaceous oat in the competitive variety testing of the FASC of the North-East (Kirov region) in the period from 2018 to 2020 are presented. The purpose of the research is to assess the productivity, ecological plasticity and stability of the genotypes of glumaceous oat for feed and universal use in the conditions of the Volga-Vyatka region. The dependences of grain yield and dry matter harvesting on the state of agro-climatic resources (HTC), temperature and precipitation are established. The contrasting weather conditions during the years of research allowed to conduct the most complete assessment of the studied genotypes. The most favorable conditions for the formation of a high yield of green mass of oat were formed in 2020 (Ij=3.76), grain - in 2019 (Ij=1.35). The average degree of positive dependence of green mass yield on the height of oat plants was revealed (r=0.51). The variety of the high-intensity type of the universal direction Medved, promising lines of the mowing direction (178h13 and 245h14) are distinguished.


2021 ◽  
Author(s):  
Alexandra Rodriguez ◽  
Giuseppe La Gioia ◽  
Patricia Le Quilliec ◽  
Damien Fourcy ◽  
Philippe Clergeau

Global change, which regroups global warming, landscape transformations and other anthropic modifications of ecosystems, has effects on populations and communities and produces modifications in the expansion area of species. While some species disappear, other ones are beneficiated by the new conditions and some of them evolve in new adapted forms or leave their ancient distribution area. As climate change tends to increase the temperature in several regions of the world, some species have been seen to leave areas in equatorial regions in order to join colder areas either towards the north of the northern hemisphere or towards the south of the southern one. Many birds as have moved geographically in direction to the poles and in many cases they have anticipated their laying dates. Actually, two tit species that use to lay their eggs in a period that their fledging dates synchronize with the emerging dates of caterpillars are now evolving to reproductive in periods earlier than before the climate change. Several species are reacting like that and other ones are moving to the north in Europe for example. Nevertheless, and very curiously, European starling, Sturnus vulgaris, populations are behaving on the contrary: their laying dates are moving towards later spring and their distribution area is moving towards the south. In this study we explore and discuss about different factors that may explain this difference from other birds.


Author(s):  
Marius Schneider ◽  
Vanessa Ferguson

The Republic of Ghana is a country located on the west coast of Africa on the Gulf of Guinea, bordering the North Atlantic Ocean, Burkina Faso, Ivory Coast, and Togo. Ghana has a total area of 238,535 square kilometres (km), a coastline of 539 km in length, and a population of 29.6 million. Ghana is home to Lake Volta, the largest artificial reservoir in the world in terms of surface area, situated approximately 200 km from Ghana’s border with Burkina Faso.


Water ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 839 ◽  
Author(s):  
Jesús Rodrigo-Comino ◽  
José María Senciales-González ◽  
José Damián Ruiz-Sinoga

In this Special Issue, we have tried to include manuscripts about soil erosion and degradation processes and the accelerated rates due to hydrological processes and climate change. We considered that the main goal was successfully reached. The new research focused on measurements, modelling, and experiments under field or laboratory conditions developed at different scales (pedon, hillslope, and catchment) were submitted and published. This Special Issue received investigations from different parts of the world such as Ethiopia, Morocco, China, Iran, Italy, Portugal, Greece and Spain, among others. We are happy to see that all papers presented findings characterized as unconventional, provocative, innovative and methodologically new. We hope that the readers of the journal Water can enjoy and learn about hydrology and soil erosion using the published material, and share the results with the scientific community, policymakers and stakeholders new research to continue this amazing adventure, featuring plenty of issues and challenges.


2020 ◽  
Vol 25 (2) ◽  
pp. 169-192
Author(s):  
P. K. Viswanathan ◽  
K. Kavya ◽  
Chandra Sekhar Bahinipati

Globally, climate change impacts are manifold, severely affecting the agriculture sector. Climate-resilient agriculture (CRA) is viewed as a panacea for overcoming the adverse effects of climate change on agriculture. This article critically reviews the literature on CRA to delineate the emerging patterns of climate-resilient agriculture. It explores multiple dimensions of CRA as related to practices, technologies, policies, innovations and interventions across different parts of the world. In the end, a schematic approach towards undertaking empirical research on CRA in the Indian context is presented. The review finds that, globally, CRA practices mainly include systematic strategies for management of critical inputs, namely, land and water, cropping systems and livelihood management. It emerges that innovations and institutions have a crucial role in accelerating the rate of adoption of CRA practices. The article highlights the need for undertaking more empirical research to get a deeper understanding of the emerging patterns of CRA in the Indian context.


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