Biology, ecology, and management of dogwood borer in eastern apple orchards

2003 ◽  
Vol 135 (5) ◽  
pp. 615-635 ◽  
Author(s):  
J. Christopher Bergh ◽  
Tracy C. Leskey
Keyword(s):  
United States ◽  
Vascular Tissue ◽  
Cultural Practices ◽  
Management Strategies ◽  
The United States ◽  
Larval Feeding ◽  
Geographical Regions ◽  
Important Pest ◽  
Important Host ◽  
Dogwood Borer

AbstractThe dogwood borer, Synanthedon scitula (Harris) (Lepidoptera: Sesiidae), has the broadest host range of the clearwing moths and is considered to be an economically important pest of many ornamental, fruit, and nut trees. Since the 1980s, dogwood borer has been recognized as an increasingly important, indirect pest of apple, Malus domestica Borkh. (Rosaceae), in eastern North America, owing mainly to increased plantings of apple on size-controlling rootstocks that promote the formation of adventitious root initials (burr knots) on the rootstock and scion. Burr knots appear to be preferred oviposition sites for dogwood borer females, although infestations can also be initiated in wounds, pruning cuts, and crotches on the branches and trunk. Larval feeding in burr knots does not adversely affect the growth and vigor of apple trees, but their mining outward from burr knots into vascular tissue can ultimately cause tree decline and death. Chlorpyrifos is the most effective insecticide for controlling dogwood borer. A supplemental label in the United States permits post-bloom, trunk drench applications of chlorpyrifos specifically for control of borers in apple, with several restrictions that preclude control of infestations higher in the tree. The ongoing review of pesticide tolerances dictated by the 1996 Food Quality Protection Act of the United States of America makes the long-term availability of this chemical uncertain. Cultural practices, such as deeper planting or berming, can reduce the likelihood of infestation of new apple plantings by dogwood borer, although they do not preclude infestations from developing above the graft union. This review and discussion is based on our contention that research toward the development of alternative, behaviorally based management strategies for dogwood borer in apple and other economically important host plants is warranted. Our review and synthesis of the dogwood borer literature revealed important gaps in knowledge about basic aspects of its biology that pertain directly to the development of alternative control tactics based on behavioral manipulation. There is considerable confusion surrounding the sex pheromone of dogwood borer and conflicting results on the response of males to isomers and blends of isomers of its purported pheromone. Studies using sex attractants to monitor its phenology in apple and non-apple habitats have yielded discrepant results and conclusions. Differences in the effectiveness of commercially available pheromone lures for trapping dogwood borer have been reported and the ability of pheromone traps to accurately reflect emergence or population density remains in question. Regardless of pronounced differences in the duration and modality of the seasonal flight of dogwood borer among different geographical regions within its range, the conclusion of univoltinism across most of its range has been perpetuated, based on extremely limited developmental data collected exclusively from individuals that developed on dogwood.

Rice weed control: current technology and emerging issues in temperate rice

1994 ◽  
Vol 34 (7) ◽  
pp. 1021 ◽  
Author(s):  
JE Hill ◽  
RJ Jr Smith ◽  
DE Bayer
Keyword(s):  
United States ◽  
Weed Control ◽  
Cultural Practices ◽  
Management Strategies ◽  
The United States ◽  
Weed Species ◽  
Rice Culture ◽  
Emerging Issues ◽  
Direct Seeded ◽  
The Cost

Among temperate rice areas, the United States and Australia are most similar in climate and in the mechanisation of rice culture. Many weed problems, even weed species invading rice, are common to both countries; and the present technology for weed control as well as concern for the impact of these technologies to environmental quality, herbicide resistance, and other weed-related issues bear many similarities. Application of current, and any new, technologies to emerging issues in US rice weed control will therefore be directly relevant to rice production in Australia and all other temperate areas struggling with the same challenges. Weeds are a significant problem in temperate rice culture. In the United States, rice is mechanically direct-seeded, allowing weeds to germinate and establish with the crop. In the last 15 years weed growth and competition has been increased by the adoption of semi-dwarf cultivars, high N fertilisation, and, in water-seeded rice, shallow flooding. High rates, and often multiple applications, of herbicides have been necessary to maximise the yield potential of these cultural systems. Advances in cultural practices and herbicide technology have maintained, if not improved, weed control; but nearly 30 years of propanil use in the southern USA resulted in propanil-resistant barnyard grass Echinochloa crus-galli (L.) Beauv., and after 4 years of continuous use, bensulfuron resistance to 4 aquatic weed species was discovered in California. Although herbicides with different mechanisms of action are needed for alternation in resistance management strategies, fewer are likely to be available. Social and environmental concerns have slowed the development and registration of rice herbicides and increased the cost of controlling weeds. Water quality deterioration from ricefield tailwaters, drift to sensitive crops, the cost of renewing registration in aquatic systems, and weed resistance all forecast reduced herbicide use in rice. Neither cultural practices nor herbicides alone can solve weed problems in direct-seeded, mechanised rice culture. With fewer herbicides and a cultural system highly vulnerable to weed losses, integrated management strategies with better information on which to base weed control decisions will be needed to solve weed problems in temperate rice.

scholarly journals Soybean Gall Midge (Diptera: Cecidomyiidae), a New Species Causing Injury to Soybean in the United States

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Anthony J McMechan ◽  
Erin W Hodgson ◽  
Adam J Varenhorst ◽  
Thomas Hunt ◽  
Robert Wright ◽  
...  
Keyword(s):  
United States ◽  
New Species ◽  
Gall Midge ◽  
Rapid Development ◽  
The United States ◽  
Management Program ◽  
Economic Losses ◽  
Larval Feeding ◽  
Important Pest ◽  
A New Species

Abstract The soybean gall midge (Resseliella maxima Gagné) was recently identified as a new species causing injury to soybean in the Midwestern United States. Although this insect was only recently identified, it has likely been present in soybean fields for at least the last 8 yr based on anecdotal reports. The soybean gall midge has historically been observed late in the season on soybean plants that were believed to have been previously compromised by a plant pathogen or mechanical damage with little to no concern for economic losses. In late June 2018, dead and dying plants were found to be associated with the soybean gall midge across four midwestern states. The distribution of plant injury in the field, larval feeding within the stem, and timing of infestation indicate that it is likely an important pest of soybean. Yield losses in soybean gall midge infested fields can be up to 100% for the first 30 meters from the field edge, with losses of 17–31% further into the field. The rapid development of the soybean gall midge as an important pest of soybean has left large gaps in the knowledge necessary to develop an integrated pest management program.

scholarly journals Prevalence of single and coinfections of human pathogens in Ixodes ticks from five geographical regions in the United States, 2013–2019

2021 ◽  
Vol 12 (2) ◽  
pp. 101637
Author(s):  
Aine Lehane ◽  
Sarah E. Maes ◽  
Christine B. Graham ◽  
Emma Jones ◽  
Mark Delorey ◽  
...  
Keyword(s):  
United States ◽  
The United States ◽  
Human Pathogens ◽  
Geographical Regions ◽  
Ixodes Ticks

scholarly journals The Anti-Jewish Narrative

Philosophia ◽  
2021 ◽  
Author(s):  
Nathan Cofnas
Keyword(s):  
United States ◽  
Jewish Identity ◽  
Cultural Practices ◽  
The United States ◽  
Recent History ◽  
High Intelligence ◽  
Liberal Multiculturalism ◽  
Anti Jewish ◽  
Intellectual Movements

AbstractAccording to the mainstream narrative about race, all groups have the same innate dispositions and potential, and all disparities—at least those favoring whites—are due to past or present racism. Some people who reject this narrative gravitate toward an alternative, anti-Jewish narrative, which sees recent history in terms of a Jewish/gentile conflict. The most sophisticated promoter of the anti-Jewish narrative is the evolutionary psychologist Kevin MacDonald. MacDonald argues that Jews have a suite of genetic adaptations—including high intelligence and ethnocentrism—and cultural practices that lead them to undermine gentile society to advance their own evolutionary interests. He says that Jewish-designed intellectual movements have weakened gentile identity and culture while preserving Jewish identity and separatism. Cofnas recently argued that MacDonald’s theory is based on “systematically misrepresented sources and cherry-picked facts.” However, Cofnas gave short shrift to at least three key claims: (a) Jews are highly ethnocentric, (b) liberal Jews hypocritically advocate liberal multiculturalism for gentiles/gentile countries but racial purity and separatism for Jews/Israel, and (c) Jews are responsible for liberalism and mass immigration to the United States. The present paper examines these claims and concludes that MacDonald’s views are not supported.

Converging cultures of communication: A comparative study of Internet use in China, Europe, and the United States

2021 ◽  
Vol 23 (7) ◽  
pp. 1751-1772
Author(s):  
Jacob Ørmen ◽  
Rasmus Helles ◽  
Klaus Bruhn Jensen
Keyword(s):  
United States ◽  
Comparative Study ◽  
Interpersonal Communication ◽  
Internet Use ◽  
Cultural Practices ◽  
The United States ◽  
Human Communication ◽  
Shared Reality ◽  
Cultural Research ◽  
Media Systems

Global Internet use is circumscribed by local political and economic institutions and inscribed in distinctive cultural practices. This article presents a comparative study of Internet use in China, the United States, and five European countries. The empirical findings suggest a convergence of cultures, specifically regarding interpersonal communication, alongside characteristic national and sociodemographic configurations of different prototypes of human communication. Drawing on the classic understanding of communication as a cultural process producing, maintaining, repairing, and transforming a shared reality, we interpret such configurations as cultures of communication, which can be seen to differ, overlap, and converge across regions in distinctive ways. Looking beyond traditional media systems, we call for further cross-cultural research on the Internet as a generic communication system joining global and local forms of interaction.

scholarly journals Preservice Teachers’ Discursive Constructions of Cultural Practices in a Multicultural Telecollaboration

2019 ◽  
Vol 21 (1) ◽  
pp. 82 ◽  
Author(s):  
Baburhan Uzum ◽  
Bedrettin Yazan ◽  
Netta Avineri ◽  
Sedat Akayoglu
Keyword(s):  
United States ◽  
Teacher Education ◽  
Preservice Teachers ◽  
Social Justice ◽  
Cultural Practices ◽  
The United States ◽  
Discursive Constructions

The study reports on a telecollaboration exchange between two teacher education classes in the United States and Turkey. In synchronous and asynchronous conversations, preservice teachers (PTs) engaged in social justice issues and made discourse choices that captured culture(s) and communities as diverse or essentialized. These choices were affected by PTs’ positionings and impacted how PTs connected to individuals only and/or to broader society.  PTs asked questions that created space for critical discussions and facilitated awareness of diversity, yet sometimes led to overgeneralizations. The study has implications for designing telecollaborations that promote language and practices to unpack the issues of social justice.

Japanese American Buddhism

2021 ◽  
Author(s):  
Michihiro Ama ◽  
Michael Masatsugu
Keyword(s):  
United States ◽  
World War Ii ◽  
Cultural Practices ◽  
The United States ◽  
Japanese American ◽  
World War ◽  
Japanese Buddhism ◽  
American Buddhism ◽  
History Of ◽  
Jodo Shinshu

Japanese Buddhism was introduced to the United States at the Parliament of World Religions in Chicago in 1893, but the development of Japanese American Buddhism, also known as Nikkei Buddhism, really began when Japanese migrants brought Buddhism with them to Hawaii and the continental United States during the late 19th and early 20th centuries. It has been influenced by, and has reflected, America’s sociopolitical and religious climate and the US relationship to Japan, to which generations of Japanese Americans, such as Issei (literally, first generation, referring to Japanese immigrants), Nisei (second-generation American-born offspring of the Issei), and Sansei (third generation), responded differently. While adapting to American society, Japanese American Buddhists maintained their cultural practices and ethnoreligious identity. The history of Japanese American Buddhism discussed in this article spans from the late-19th Century to the 1970s and is divided into three major periods: the pre-World War II, World War II, and the postwar eras. Japanese American Buddhism is derived from the various Buddhist organizations in Japan. The Nishi Hongwanji denomination of Jōdo Shinshū, a form of Pure Land Buddhism known as Shin Buddhism in the West, is the oldest and largest form of ethnic Japanese Buddhism in the United States. In Hawaii, Nishi Hongwanji founded the Hompa Hongwanji Mission of Hawaii (HHMH) in Honolulu in 1897. On the continental United States, it established the Buddhist Mission of North America (BMNA) in San Francisco in 1898, currently known as the Buddhist Churches of America (BCA). Other Japanese Buddhist organizations also developed in the United States at the beginning of the 20th century. They include the Jōdo-shū, another sect of Pure Land Buddhism; Higashi Hongwanji, another major denomination of Jōdoshin-shū; Sōtō-shū, a Zen Buddhist school; Shingon-shū, known as Kōyasan Buddhism; and Nichiren-shū. The characteristics of Japanese American Buddhism changed significantly during World War II, when approximately 120,000 persons of Japanese descent living in the West Coast states were incarcerated because of President Franklin D. Roosevelt’s Executive Order 9066. The postwar period witnessed a rapid transformation in the status and visibility of Japanese Buddhism in the United States. This transformation was driven by the promotion of ethnonational Buddhism by Nisei and by the growth of interest in Zen Buddhism among the general American public. The positive reception of Japanese Buddhism in the United States reflected and reinforced the transformed relationship between the United States and Japan from wartime enemies to Cold War partners. While they experienced greater receptivity and interest in Buddhism from nonethnics, they could no longer practice or espouse Jōdo Shinshū teachings or adapted practices without clarification. Debates concerning the authenticity of Jōdo Shinshū Buddhism and Japanese American Buddhist practices were interwoven within a longer history of American Orientalism. By the 1960s, Japanese American Buddhist communities were transformed by the addition of a small but vocal nonethnic membership and a new generation of Sansei Buddhists. Demands for English-speaking ministers resulted in the creation, in 1967, of the Institute of Buddhist Studies, the first graduate-level training program in the United States endorsed by Nishi Hongwanji. This article is an overview of Japanese American Buddhism with a focus on the development of the Nishi Hongwanji Shin Buddhist organizations in the United States. English scholarship on the development of other Japanese Buddhist organizations in the United States is still limited. Throughout the history of Japanese American Buddhism, Nikkei Buddhists negotiated with America’s political institutions and Christian churches, as well as with Euro-American Buddhists, over Buddhist and cultural practices to maintain and redefine their ethnoreligious tradition. Buddhist temples provided the space for them to gather and build a community of shared faith and cultural heritage, discuss their place and the role of Buddhism in American society, and express their concerns to America’s general public.

A review of the biology and ecology of Florida beggarweed (Desmodium tortuosum)

Weed Science ◽  
2004 ◽  
Vol 52 (2) ◽  
pp. 185-200 ◽  
Author(s):  
Theodore M. Webster ◽  
John Cardina
Keyword(s):  
United States ◽  
Plant Pathogens ◽  
Cultural Practices ◽  
The United States ◽  
Western Hemisphere ◽  
Southern United States ◽  
Southeast United States ◽  
Forage Crop ◽  
Disturbed Areas ◽  
The World

Florida beggarweed is native to the Western Hemisphere but is naturalized around the world. During the last century, the mechanization of agriculture has transitioned Florida beggarweed from an important forage component to a weed of significance in the coastal plain of the southeast United States. This herbaceous annual is naturalized and found in fields and disturbed areas throughout the southern United States. The characteristics that made Florida beggarweed a good forage crop also make it a formidable weed. This review describes the importance of Florida beggarweed as a weed in the southern United States and the taxonomy of this species and details the distribution throughout the world and within the United States. The ecology of Florida beggarweed and its interactions with crop plants, insects, nematodes, and plant pathogens also are summarized. Finally, management of Florida beggarweed in agricultural systems using cultural practices and herbicides is reviewed.

scholarly journals A FRESH LOOK AT KNOWLEDGE MANAGEMENT STRATEGIES DURING THE CRISIS

2021 ◽  
Author(s):  
Marharyta Chepeliuk
Keyword(s):  
United States ◽  
Digital Technology ◽  
Management Strategies ◽  
The United States ◽  
Office Work ◽  
Remote Work ◽  
High Recovery ◽  
The Social ◽  
Employment Rates ◽  
Near Future

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.

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