Review of Pythium species Causing Damping-off in Corn

Author(s):  
John Theodore Bickel ◽  
Alyssa Koehler

Seedling blights and root rots caused by Pythium species account for almost twenty-five million dollars in annual losses to corn (Zea mays) production in the United States and Ontario. Variations in annual rainfall and increasing use of no-till agriculture can favor soilborne pathogens like Pythium. To date, forty-four species have been reported as pathogenic to corn in the United States. The average annual corn planting date in the United States has shifted approximately one week earlier in the past decade, exposing young corn plants to longer germination periods of generally cooler temperatures, favoring attack by Pythium. Optimal temperatures, aggressiveness, and response to chemical and biological treatment options vary by species. This review consolidates the species of Pythium reported as corn pathogens in literature to date. It also provides an insight into management strategies and discusses variations in fungicide sensitivity observed in corn-related Pythium species.

2021 ◽  
pp. 155545892199751
Author(s):  
Mehtap Akay ◽  
Reva Jaffe-Walter

This article details how a newly arrived Turkish refugee student navigates schooling in the United States. It highlights the trauma a purged Turkish families experience in their home country and their challenges as newcomers unfamiliar with their new country’s dominant culture, language, and education system. The case narrative provides insight into how children of Turkish political refugees are often overlooked in the context of U.S. schools, where teachers lack adequate training and supports. By illuminating one refugee family’s experiences in U.S. schools, the case calls for leaders to develop holistic supports and teacher education focused on the needs of refugee students.


Aschkenas ◽  
2014 ◽  
Vol 24 (2) ◽  
Author(s):  
Joachim Schlör

AbstractThe idea to create and stage a play called »Heimat im Koffer« – »A home in the suitcase« – emerged, I presume, in Vienna shortly before Austria became part of National Socialist Germany in 1938: the plot involved the magical translocation of a typical Viennese coffeehouse, with all its inhabitants and with the songs they sang, to New York; their confrontation with American everyday life and musical traditions would create the humorous situations the authors hoped for. Since 1933, Robert Gilbert (Robert David Winterfeld, 1899–1978), the son of a famous Jewish musician and himself a most successful writer of popular music for film and operetta in Weimar Germany, found himself in exile in Vienna where he cooperated with the journalist Rudolf Weys (1898–1978) and the piano artist Hermann Leopoldi (1888–1959). Whereas Gilbert and Leopoldi emigrated to the United States and became a part of the German-Jewish and Austrian-Jewish emigré community of New York – summarizing their experience in a song about the difficulty to acquire the new language, »Da wär’s halt gut, wenn man Englisch könnt« (1943) – Weys survived the war years in Vienna. After 1945, Gilbert and Weys renewed their contact and discussed – in letters kept today within the collection of the Viennese Rathausbibliothek – the possibility to finally put »Heimat im Koffer« on stage. The experiences of exile, it turned out, proved to be too strong, and maybe too serious, for the harmless play to be realized, but the letters do give a fascinating insight into everyday-life during emigration, including the need to learn English properly, and into the impossibility to reconnect to the former life and art.


Plant Disease ◽  
2012 ◽  
Vol 96 (3) ◽  
pp. 384-388 ◽  
Author(s):  
Xiao Hong Lu ◽  
R. Michael Davis ◽  
S. Livingston ◽  
J. Nunez ◽  
Jianjun J. Hao

The identity of 172 isolates of Pythium spp. from cavity spot lesions on carrot produced in California and Michigan was determined, and their sensitivity to three fungicides was examined. Pythium violae accounted for 85% of California isolates, with P. irregulare, P. dissotocum (the first report as a carrot pathogen in the United States), P. ultimum, and P. sulcatum making the balance. P. sulcatum, P. sylvaticum, and P. intermedium were the most commonly recovered (85%) species in Michigan; others from Michigan included P. intermedium, P. irregulare, and an unclassified strain, M2-05. On fungicide-amended media, 93% of isolates were sensitive to mefenoxam (inhibition of mycelial growth was >60% at 10 μg active ingredient [a.i.]/ml); however, two of five isolates of P. irregulare from California were highly resistant (≤60% inhibition at 100 μg a.i./ml); about half of the isolates of P. intermedium and P. sylvaticum and a single isolate of P. violae were highly or intermediately resistant to mefenoxam (>60% inhibition at 100 μg a.i./ml, or ≤60% inhibition at 10 μg a.i./ml). P. dissotocum, P. irregulare, P. sulcatum, M2-05, and three of seven isolates of P. intermedium were insensitive to fluopicolide (effective concentrations for 50% growth inhibition [EC50] were >50 μg a.i./ml), while P. sylvaticum, P. ultimum, P. violae, and some isolates in P. intermedium were sensitive (EC50 < 1 μg a.i./ml). All isolates were sensitive to zoxamide (EC50 < 1 μg a.i./ml). Sensitivity baselines of P. violae to zoxamide and fluopicolide were established.


2013 ◽  
Vol 6 (2) ◽  
pp. 91-97 ◽  
Author(s):  
Pamella Stoeckel ◽  
Cheryl Kruschke

This qualitative key informant study examined the emerging role of the doctor of nursing practice (DNP) degree to fill a gap in health care in the United States. Although the DNP degree was proposed to bring added value to the health care system, it is new with little research to confirm the assumption. This research addressed this need by phone interviews of 12 practicing DNPs in the United States. Questions asked of the participants focused on differences in role/practice as a DNP and challenges faced. The interviews were audiotaped, transcribed, and responses coded for themes. Five broad categories with relational themes emerged from the data of DNPs perceptions of their practices. The categories included educational preparation, practice settings, role acceptance, leadership, and challenges. The results of this study provide insight into the perceptions of practicing DNPs experiencing adjustment to practice as a DNP. These perceptions aid other DNPs and educators in preparing advance practice nurses for the future.


Author(s):  
Helen Halbert

This paper examines the history of clinical librarianship in Canada from 1970 to 2013 as seen through the lens of practitioner narratives and published literature. While no reviews of clinical librarianship in Canada were found in the literature search, there were many project descriptions in articles and published reports that have provided insight into the field during its formative period in Canada from the 1970s. In addition to tracing narrative histories from 1970 to 2013, the author has continued to wonder why these important stories have never properly been told. Was it because the scope of clinical librarianship, its expected and embodied professional duties, was not regulated (as it is in the United States and United Kingdom)? Is it because the American Library Association accredited library schools in Canada do not offer appropriate curricula and professional training? It seems clear that some librarians in Canada were pioneers in the way that Gertrude Lamb was in the United States, but they did not call themselves clinical librarians. Consequently, they opted for more generic job titles such as medical librarian and health librarian. Whatever the reasons for this, it is within this framework that the author begins an exploration of clinical librarianship in Canada. The paper's aim is to provide a view into clinical librarianship in Canada back to the 1970s to ensure the story is properly told.


Author(s):  
Marharyta Chepeliuk

The pandemic has enhanced the social function of digital technologies and services. It is solely through digital technology that a massive shift to remote work has been possible during the most difficult period of the pandemic. All over the world, the philosophy of office work is changing, and there is a transition to permanent and conditional-permanent remote work. For example, Transport Canada is planning to move to telecommuting as a key employment model for its employees. In the near future, telecommuting will continue for most of the 6,000 employees in the agency. In China, widespread use of WeChat, Tencent, and Ding digital working applications began in late January 2020, when isolation measures were introduced. In Switzerland, COOVID-19 Remote Work and Study Resources provides free resources for remote operation and distance learning. Zoom and Google Meet videoconferencing, remote workplaces, and new social platforms run remote work almost immediately, and this trend is likely to continue after the lifting of the quarantine. Trends in staff employment worldwide are rather mixed. According to LinkedIn, it is possible to track changes in the employment rates of seven key economies – Australia, China, France, Italy, Singapore, Great Britain and United States. In France and Italy, the decline was more pronounced at -70% and -64.5% respectively by mid-April 2020. Since then, employment has been gradually recovering, and most of the seven key economies for which these figures have been analysed tend to change by 0 per cent year on year. By July 1, 2020, China, France, and the United States had seen the largest rebound in relative recruitment – -6% or -7%. At the end of September 2020, the countries with a high recovery in employment were China (22 per cent), Brazil (13 per cent), Singapore (8 per cent) and France (5 per cent). In these economies, hiring so far seems to compensate for months in which no new personnel have been recruited, indicating some stabilization of the labor market.


Perichoresis ◽  
2013 ◽  
Vol 11 (1) ◽  
pp. 51-75
Author(s):  
Matthew S. Harding

ABSTRACT Throughout the bulk of the Reformed Tradition’s history within both Europe and the United States, most scholars have dismissed pastor and theologian Moïse Amyraut as a seventeenth century French heretic whose actions and theology led to the demise of the Huguenots in France. However, upon further introspection into Amyraut’s claims as being closer to Calvin (soteriologically) than his Genevan successors, one finds uncanny parallels in the scriptural commentaries and biblical insight into the expiation of Christ between Calvin and Amyraut. By comparing key scriptural passages concerning the atonement, this article demonstrates that Reformed theologian Moïse Amyraut in fact propagated a universal atonement theory which parallels Calvin’s, both men ascribing to biblical faithfulness, a (humanistic) theological method, and similar hermeneutic. As such, both Calvin and Amyraut scripturally contend that God desires and provided the means for the salvation of the whole world. Further, the article demonstrates that Calvin’s successor, Theodore de Beza, could not in fact make the same claims as Amyraut, this article demonstrating that Beza went beyond Calvin’s scriptural approach to Christ’s expiation. Therefore, this article supports a more centrist approach from within and outside the Reformed tradition by demonstrating that Calvin and Amyraut concentrically held to God’s gracious provision in Christ for the saving of the whole world, for those who would believe in Christ for salvation.


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