scholarly journals The impact of fusarium ear rot in Poland and methods to reduce losses caused by the disease

Author(s):  
Seweryn Frasiński ◽  
Elżbieta Czembor ◽  
Justyna Lalak-Kańczugowska

Maize has a significant economic impact all over the world. Fungi in the genus Fusarium that cause fusarium ear rot of maize have significant effect on the yeld quality and quantity. The main threat is the contamination of grain with the mycotoxins they produce - as these are harmful to humans and animals. Such mycotoxins are a group of secondary metabolites of varied structure, which belong mainly to trichothecenes, fumonisins and zearalenones. As no efficient chemical control read and pink rot in the field is possible, prevention relies on cultural practices and use resistant hybrids. Insects play an important role in the infection, which is why it is recommended to control their prevalence during growing season.

Anthropology ◽  
2018 ◽  
Author(s):  
Paulette F. Steeves

There are minimally 370 million Indigenous people in the world. The term Indigenous was not used to identify human groups until recently. Indigenous people are often identified as the First People of a specific regional area. Indigeneity as applied to First People came into use in the 1990s, as many colonized communities fought against erasure, genocide, and forced acculturation under colonial regimes. An often-cited definition of Indigenous peoples is one by Jose Martinez Cobo, special rapporteur for the UN Sub-Commission. Cobo’s 1986 report was completed for the United Nations Economic and Social Council, Commission on Human Rights, Sub-Commission on Prevention and Discrimination and Protection of Minorities, thirty-fifth session, item 12 of the provisional agenda, titled, “Study of the Problem of Discrimination against Indigenous Populations.” Cobo described Indigenous people, communities, and nations as groups that have a “historical continuity with pre-colonial societies” within territories they developed, and as communities that “consider themselves distinct from other sectors of societies” now in their territories. Cobo further stressed that Indigenous people and communities are minorities within contemporary populations that work to preserve their ethnic identities and ancestral territories for future generations. It is important to include displaced people whom prior to colonization identified with specific land areas or regional areas as homelands, as well as Indigenous communities that have for decades been in hiding in areas away from their initial homeland areas. Many descendants of Indigenous people were forced to hide their identities for their own safety due to colonization and genocidal policies focused on physical and cultural erasure. That does not make them non-Indigenous. It makes them survivors of genocide, erasure, and forced acculturation. Many Indigenous people are just coming to terms with the impact of ethnic cleansing and the work to reclaim and revive their identities and cultures. Indigenous is both a legal term, and a personal, group, and pan-group identity. Scholars have argued there are at least four thousand Indigenous groups, but that number is likely very low. Indigeneity is not as simple as an opposition to identity erasure or a push back against colonization. Indigeneity is woven through diverse experiences and histories and is often described as a pan-political identity in a postcolonial time. However, that can be misleading, as the world does not yet exist in a postcolonial state, despite ongoing concerted efforts by Indigenous people and their allies in political and academic spheres to decolonize institutions and communities. Diverse Indigenous communities weave Indigeneity through a multifaceted array of space and time to revive identities and cultural practices and to regain or retain land, human rights, heritage, and political standing.


2020 ◽  
Vol 27 (2) ◽  
pp. 481-490
Author(s):  
Sana Ullah

The current study investigated the impact of weeds on major seasonal crops in district Bajaur Khyber Pakhtunkhwa, Pakistan. The aim was to know the prevailing weed management system and encourage the farmers to integrate cultural practices with chemical control measures. A three stage stratified sampling technique was adopted to collect data from the selected respondents of through a well-designed interview schedule. Statistical Package for Social Sciences (SPSS v 20) was used to analyze the primary cross-sectional data and the obtained findings were depicted in tables and figures. Descriptive statistics revealed that majority of the respondents i.e. 31.3% were of middle age with 63.9% illiteracy rate and 60.8% reported living in household size of 10 and above family members. Echinocloa crus-galli was the most invasive among Kharif weeds as reported by 26% respondents, while among Rabi weeds, Convolvulus arvensis was the most reported weed as mentioned by 21% respondents. The study established that maize and wheat are the main crops impacted by Kharif and Rabi weeds respectively, where mechanical weeding was the most applied control method adopted by 51.8% respondents, followed by chemical (42.2%) and manual weeding (6%) in the study area. Study observed a significant decrease in crops yield due to various weeds found in farmers’ fields. Effective extension services are needed to encourage farmers integrate cultural practices with chemical control management in order to get better crop yield and avoid environmental and human health hazards.


Author(s):  
Joan-Pau Rubiés

How we think of the relationship between the Jesuits and the Enlightenment largely depends on how we conceptualize the latter. This chapter addresses it as a series of debates conducted in the context of a cosmopolitan Republic of Letters, and a number of specific cultural practices that made that very Republic possible. The Jesuits were, therefore, participants in, rather than enemies of, the Enlightenment. Because they combined theological conservatism with cultural modernity, the Jesuits were feared and resented with particular vehemence. Placed between two different modernities, one characterized by global structures of communication and learning, as well as by the practices of cultural accommodation, the other by the attack on superstition and religious authority, the Jesuits helped create the conditions for the Enlightenment, making important but paradoxical contributions to some of its central debates. Nowhere was this more obvious than in the impact of missionary ethnographies concerning the “Gentile” pagan peoples of the world.


2021 ◽  
Vol 22 (9) ◽  
pp. 4756
Author(s):  
Anna Rysiak ◽  
Sławomir Dresler ◽  
Agnieszka Hanaka ◽  
Barbara Hawrylak-Nowak ◽  
Maciej Strzemski ◽  
...  

Due to global warming, invasive species have spread across the world. We therefore studied the impact of short-term (1 day or 2 days) and longer (7 days) heat stress on photosynthesis and secondary metabolites in Heracleum sosnowskyi, one of the important invasive species in the European Union. H. sosnowskyi leaves exposed to short-term heat stress (35 °C/1 d) showed a decrease in chlorophyll and maximum potential quantum efficiency of photosystem II (Fv/Fm) compared to control, 35 °C/2 d, or 30 °C/7 d treatments. In turn, the high level of lipid peroxidation and increased H2O2 accumulation indicated that the 30 °C/7 d stress induced oxidative damage. The contents of xanthotoxin and bergapten were elevated in the 2 d and 7 d treatments, while isopimpinellin was detected only in the heat-stressed plants. Additionally, the levels of free proline and anthocyanins significantly increased in response to high temperature, with a substantially higher increase in the 7 d (30 °C) treatment. The results indicate that the accumulation of proline, anthocyanins, and furanocoumarins, but not of phenolic acids or flavonols, contributes to protection of H. sosnowskyi plants against heat stress. Further studies could focus on the suppression of these metabolites to suppress the spread of this invasive species.


Plant Disease ◽  
2021 ◽  
Author(s):  
Pedro Reis ◽  
Ana Gaspar ◽  
Artur Alves ◽  
Florence Fontaine ◽  
Cecilia Rego

Botryosphaeria dieback is a grapevine trunk disease that affects all viticulture regions of the world. Species of the genus Lasiodiplodia have been reported as pathogenic towards grapevine in several growing regions and have also been previously reported from Portuguese vineyards. Species in this genus, particularly Lasiodiplodia theobromae, have been reported on previous studies to be more aggressive than other Botryosphaeriaceae species most commonly associated with Botryosphaeria dieback. The aim of this study was to assess the response of some of the more representative cultivars planted throughout Portuguese vineyards, Touriga Nacional, Touriga Franca, Alvarinho, Aragonez (=Tempranillo) and Cabernet Sauvignon, by performing artificial inoculations with Lasiodiplodia spp. collected in different geographic locations worldwide. Two experiments, one by inoculating two-year-old grapevines kept on a greenhouse-controlled conditions with six isolates of L. theobromae and one isolate of L. mediterranea and other by inoculating seven-year-old field grown grapevines with two isolates of L. theobromae, were conducted twice. Response of the cultivars was assessed by evaluating the lesion length caused by the isolates under study, five months after inoculation. The results showed that all isolates studied were able to infect the annual shoots since they were always re-isolated and produced internal wood discoloration. Significant differences were found for all isolate/cultivar combinations. For both experiments, Touriga Nacional showed the largest lesions while Aragonez recorded the smallest lesions amongst the whole lot of cultivars inoculated with Lasiodiplodia spp.. In general, Portuguese isolates were more aggressive than those from Peru, which demonstrated to be mildly aggressive. These results give a first insight on the response of selected Portuguese cultivars to Lasiodiplodia species, which are present in Portugal, but not commonly associated with Botryosphaeria dieback. This contributes to improve knowledge of the impact that Botryosphaeria dieback causal agents have on crucial national cultivars, which may help winegrowers not only to manage current cultural practices, but also to optimize decision making when planning the establishment of new vineyards.


2020 ◽  
Vol 2 (1) ◽  
pp. 6 ◽  
Author(s):  
Bertrand Momo ◽  
Gordon Donald Hoople ◽  
Diana Chen ◽  
Joel Alejandro Mejia ◽  
Susan M Lord

Within engineering, Western, White, colonial knowledge has historically been privileged over other ways of knowing. Few engineering educators recognize the impact of ethnocentricity and masculinity of the engineering curriculum on our students. In this paper we argue for a new approach, one which seeks to create an engineering curriculum that recognizes the great diversity of cultural practices that exist in the world. We begin by reviewing key ideas from three pedagogies not typically incorporated in engineering education: Culturally Relevant/Responsive Pedagogy, Culturally Sustaining Pedagogy, and Indigenous Pedagogy. We then present our attempts to develop an engineering curricula informed by these practices. We describe interventions we have tried at two levels: modules within traditional engineering sciences and entirely new courses. We aim to convince readers that these pedagogies may be a key tool in changing the dominant discourse of engineering education, improving the experience for those students already here, and making it more welcoming to those who are not.


Author(s):  
Maria Rosario T. de Guzman ◽  
Jill Brown ◽  
Carolyn Pope Edwards

An increasing number of families around the world are living apart—defining and redefining their relationships, roles, and ways of maintaining a sense of cohesion across distance. This book uniquely highlights how families, both in times of crisis and within normative cultural practices, organize and configure themselves and their parenting across distance. Readers are given a unique peek into the lives of families globally that are affected by separation in a wide range of circumstances including migration, fosterage, divorce, military deployment, education, and orphanhood. Authors delve into the daily reality of members and help us understand why families live apart, how families are redefined across distance, and the impact on various members. This volume is unique in its representation of issues affecting families around the world, in its broad geographic scope of studies, and in the diverse representation of authors from fields such as psychology, anthropology, sociology, education, and geography.


Author(s):  
Stephen Burt ◽  
Tim Burt

Oxford Weather and Climate since 1767 provides a detailed description and analysis of the weather records made at the Radcliffe Observatory in Oxford, the longest continuous series of single-site weather records in Britain and one of the longest in the world. The earliest records date from 1767, and daily records are unbroken since November 1813. The records allow the reconstruction of 200-year temperature and rainfall series and places the Oxford records in the context of long-term climate change. In this, the first full publication of the entire dataset, the long Oxford record is both celebrated and described. Detailed commentaries on weather by month and by season are provided, including numerous contemporary documentary and photographic evidence of past weather events. Drought and flood feature prominently, but so too do fog, frost, ice and snow. Some long-term changes are obvious, such as the increase in air temperature over the period of the instrumental record, but the impact on the growing season and the ability to grow grapes commercially near Oxford are less well known.


2020 ◽  
Vol 26 (1) ◽  
pp. 75-85
Author(s):  
Marie M'Balla-Ndi Oelgemoeller ◽  
Levi Obijiofor

Commentary: In a global context of national security anxiety, governments across the world are passing an increasing number of laws in response to terror-related threats. Often, national security laws undermine media freedom and infringe on democratic principles and basic human rights. Threats to media freedom and abuse of journalists are also increasing in Melanesia. This commentary argues that in a regional context of repetitive political coups, failures in governance, high levels of corruption, insurrections, or even media crises, the tensions between national security legislation and media freedom need to be examined cautiously. The authors suggest that strong methodological and theoretical frameworks that allow for serious consideration of cultural practices and protocols will be necessary to conduct research examining these tensions in Melanesia.


Sign in / Sign up

Export Citation Format

Share Document