1,720,976 research outputs found
Fusarium Wilt (Fusarium oxysporum f. sp. niveum) of Watermelon
No full textFusarium wilt of watermelon is one of the most serious and difficult diseases to manage and occurs in most production regions worldwide. The fungus can be seedborne and has great longevity in the soil, allowing infested soil to also serve as a source of infection. This new 4-page publication of the UF/IFAS Plant Pathology Department signs, symptoms, and the disease cycle of Fusarium wilt and provides recommendations for cultural and chemical management. Written by Pamela Roberts, Nicholas Dufault, Robert Hochmuth, Gary Vallad, and Mathews Paret.
https://edis.ifas.ufl.edu/pp35
Introducing a Fusarium Wilt Risk Calculator Tool for Watermelon Growers in Florida
No full textFusarium wilt of watermelon, caused by the fungus Fusarium oxysporum f. sp. niveum, is a threat to watermelon production in Florida. While a number of management options are available, numerous factors influence which management strategies are feasible for growers. This new 4-page publication of the UF/IFAS Plant Pathology Department introduces a tool that calculates the estimated risk of Fusarium wilt based on potential management strategies and environmental factors. This tool is intended for use by watermelon growers in Florida and should be helpful in advising them on management decisions. Written by Matthew Cullen, Daniel Perondi, Clyde Fraisse, and Nicholas Dufault.
https://edis.ifas.ufl.edu/pp36
"Candidatus Liberibacter solanacearum": An Emerging Pathogen Infecting Potato and Tomato
No full textA bacterium called “Candidatus Liberibacter solanacearum” infects potatoes and tomatoes, causing zebra chip in potatoes and psyllid yellows in tomatoes. These diseases are highly destructive and have been known to reduce yields by up to 85%. “Ca. L. solanacearum” has been reported in several states, though it has not been detected in Florida, which is the second largest producer of tomatoes and seventh largest producer of potatoes in the US. This 9-page fact sheet covers the biology, distribution, symptoms, transmission, diagnosis, and management of the pathogen and its associated diseases. Written by Binoy Babu, Mathews L. Paret, Nicholas Dufault, and Carrie L. Harmon, and published by the UF Department of Plant Pathology, August 2015.
PP320/PP320: "Candidatus Liberibacter solanacearum": An Emerging Pathogen Infecting Potato and Tomato (ufl.edu
"Candidatus Liberibacter solanacearum": An Emerging Pathogen Infecting Potato and Tomato
Full text linkA bacterium called “Candidatus Liberibacter solanacearum” infects potatoes and tomatoes, causing zebra chip in potatoes and psyllid yellows in tomatoes. These diseases are highly destructive and have been known to reduce yields by up to 85%. “Ca. L. solanacearum” has been reported in several states, though it has not been detected in Florida, which is the second largest producer of tomatoes and seventh largest producer of potatoes in the US. This 9-page fact sheet covers the biology, distribution, symptoms, transmission, diagnosis, and management of the pathogen and its associated diseases. Written by Binoy Babu, Mathews L. Paret, Nicholas Dufault, and Carrie L. Harmon, and published by the UF Department of Plant Pathology, August 2015.
PP320/PP320: "Candidatus Liberibacter solanacearum": An Emerging Pathogen Infecting Potato and Tomato (ufl.edu
Disease Control for Snap Beans in Florida
No full textSnap bean is an important vegetable crop in Florida. It is produced in all regions of the state. Bush snap beans dominate commercial plantings, but pole beans are also produced, primarily in Miami-Dade County. Midwinter bean production, the most profitable for Florida, is centered in the Homestead, southwest Florida, and Belle Glade areas.
Based on the 2012 US Census of Agriculture (NASS, USDA), snap bean is an economically important vegetable crop in Florida with a total of 33,338 acres harvested in 2012. Miami-Dade County ranked second in snap bean production in the United States with a total of 11,126 acres. Because of Florida's warm and wet weather, many diseases affect snap beans. Disease management is an important component in successful snap bean farming. Despite vigorous control efforts, substantial losses in yield and quality can still occur. This publication suggests a sequential disease control program for snap beans in Florida. Postharvest disease problems are addressed only to the extent that they are affected by field practices. The application of the following sequential control program should minimize yield losses for the majority of plantings.
This revision is by Shouan Zhang, Nicholas Dufault, Mathews Paret, Pamela Roberts, Guodong Liu, and Qingren Wang
Disease Control for Snap Beans in Florida
No full textSnap bean is an important vegetable crop in Florida. It is produced in all regions of the state. Bush snap beans dominate commercial plantings, but pole beans are also produced, primarily in Miami-Dade County. Midwinter bean production, the most profitable for Florida, is centered in the Homestead, southwest Florida, and Belle Glade areas.
Based on the 2012 US Census of Agriculture (NASS, USDA), snap bean is an economically important vegetable crop in Florida with a total of 33,338 acres harvested in 2012. Miami-Dade County ranked second in snap bean production in the United States with a total of 11,126 acres. Because of Florida's warm and wet weather, many diseases affect snap beans. Disease management is an important component in successful snap bean farming. Despite vigorous control efforts, substantial losses in yield and quality can still occur. This publication suggests a sequential disease control program for snap beans in Florida. Postharvest disease problems are addressed only to the extent that they are affected by field practices. The application of the following sequential control program should minimize yield losses for the majority of plantings.
This revision is by Shouan Zhang, Nicholas Dufault, Mathews Paret, Pamela Roberts, Guodong Liu, and Qingren Wang
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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