Download or read book Plant Products for the Management of Onion Leaf Blight Disease written by Ramjegathesh Rajendran and published by . This book was released on 2012-10-15 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Improving Integrated Pest Management of Stemphylium Leaf Blight of Onion written by Sara Stricker and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Stemphylium leaf blight (SLB), caused by Stemphylium vesicarium, has become an important disease of onion in Ontario, Canada and the north-eastern USA in recent years. This is the first study in Canada to confirm the species of Stemphylium isolates collected in onion fields using molecular methods and to investigate several elements of the life cycle in North America. The research confirmed that sexual reproduction and survival of overwintering structures on onion leaves occurred in the field and identified six weed species that are alternative hosts: redroot pigweed (Amaranthus retroflexus), marshcress (Rorippa palustris), yellow nutsedge (Cyperus esculentus), perennial sowthistle (Sonchus arvensis), bull thistle (Cirsium vulgare) and purslane (Portulaca oleracea). Using the forecasting models TOMcast and BSPcast to trigger foliar fungicide application reduced applications by one or two sprays. Foliar sprays in combination with fungicide seed treatments reduced SLB severity by 33-48%, but seed treatments or foliar sprays alone did not suppress symptoms. The efficacy of foliar fungicides for the management of SLB has declined over the past 10 years. Isolates of S. vesicarium collected in southern Ontario from onion, asparagus, and leek in 2012-2019 were assessed for insensitivity to the active ingredients of commonly used fungicides via mycelial growth and conidial germination assays. Of the isolates collected in southern Ontario in 2018-2019, 94% were insensitive to azoxystrobin, 61% to pyrimethanil, and 18% to fluopyram. Difenoconazole did not inhibit conidial germination and 1% of S. vesicarium isolates were insensitive in the mycelial growth assay. Weather variables relating to moisture (high daily average relative humidity, low vapour pressure deficit, and increased leaf wetness) were correlated with an increase in air-borne S. vesicarium spores. A model was developed to predict the concentration of air-borne spores but requires validation with more data, especially for years with high SLB severity. Other abiotic factors such as drought may increase disease severity, but a controlled environment experiment did not find a relationship between SLB susceptibility and drought. Future research should focus on new fungicides, alternative products, biocontrol agents, and modifying the integrated pest management program to better indicate when no fungicides are required.
Download or read book Compendium of Onion and Garlic Diseases and Pests written by Howard F. Schwartz and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Compendium of Onion and Garlic Diseases and Pests, Second Edition provides an updated, comprehensive, authoritative, and modern account of onion and garlic diseases and insect pests. It covers over 75 diseases including infectious and noninfectious diseases. The new edition contains nearly 250 color photographs of onion and garlic disease symptoms with expert descriptions of the identifying characteristics of symptoms and their causal agents. In addition to disease coverage, the new edition identifies the crop’s most damaging pests, the symptoms they cause, and methods to control and prevent them.Disease management practices should be economical and must be compatible with the environment and the production system. Thus, many options for onion and garlic disease management are discussed. The description of each disease includes a general account of its importance and world distribution, symptoms, causal organism or agent, disease cycle and epidemiology, management, and selected references. The references document the descriptions and may be consulted for further information.This compendium is designed to assist in the diagnosis of onion and garlic diseases and pests, in the field, laboratory, or diagnostic clinic, and to provide recommendations for management of onion and garlic diseases and pests. The compendium will be useful to plant pathologists, entomologists, nematologists, crop production specialists, growers, diagnostic clinicians, students, regulatory agents, crop consultants, agribusiness representatives, educators, researchers, and others interested in the recognition or management of onion and garlic diseases throughout the world. - Publisher.
Download or read book Sustainable disease management in a European context written by David B. Collinge and published by Springer Science & Business Media. This book was released on 2008-09-02 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main theme of the book is sustainable disease management in a European context. Some of the questions addressed are: How does society benefit from plant pathology research? How can new molecular approaches solve relevant problems in disease management? What other fields can we exploit in plant pathology research? What challenges are associated with free trade across the new borders? How can we contribute to solving problems of developing countries? How does plant pathology contribute to food quality and safety? How does globalization/internationalization affect teaching and extension in plant pathology?
Download or read book Crop Rotation on Organic Farms written by Charles L. Mohler and published by Natural Resource Agriculture and Engineering Service (Nraes). This book was released on 2009 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Role of Endophytes in Plant Health and Defense Against Pathogens written by Massimiliano Morelli and published by Frontiers Media SA. This book was released on 2020-10-29 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.
Download or read book Onions and Other Vegetable Alliums written by James L. Brewster and published by CABI. This book was released on 2008 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: This fully revised, expanded and updated edition of the successful text, Onions and Other Vegetable Alliums, relates the production and utilization of these familiar and important vegetable crops to the many aspects of plant science underpinning their production and storage technologies. Chapters cover species and crop types, plant structure, genetics and breeding, physiology of growth and development as well as pests and diseases, production agronomy, storage after harvest and the biochemistry of flavour, storage carbohydrates and colour and how this relates to nutritional and health benefits. From this wide perspective it is possible to see many examples where underlying scientific knowledge illuminates, explains and can improve agronomic practice. The reader will get an insight into how molecular methods are revolutionizing the study of taxonomy, genetics, pathology and physiology and how these methods are being applied in the breeding of improved crops.
Download or read book Murder in the Library written by Steve Demaree and published by Createspace Independent Publishing Platform. This book was released on 2017-08-08 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the third book in the Lt. Dekker/Sgt. Murdock series, a man is found dead inside the locked library of his home. Surveillance cameras show that no one other than the deceased entered the library, and yet the man has been shot with a poisoned dart. The case means even more to the two detectives than any of their previous cases, because the deceased was a mentor to both of them when they were boys. The deceased had received a threatening note, which the two detectives knew about, and he had promised to leave them a clue if he was murdered. He did, but it turned out to be harder to decipher than the detectives thought. The duo questions friends and foe of the retired professor until they find the one clue that leads them to the guilty party.
Download or read book Vegetable Diseases written by Steven T. Koike and published by Gulf Professional Publishing. This book was released on 2007 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vegetable Diseases focuses primarily on diseases that are caused by pathogens. Chapters dealing with the general principles of the causes, diagnosis and control of vegetable crop diseases are followed by crop-based chapters. Each disease entry includes a brief introduction to the disease, detailed description of disease symptoms, information on the pathogen and disease development, and suggestions on how to manage the problem. Top quality color photos illustrate the book throughout. This book will be useful to a range of professionals including research and extension plant pathologists; diagnosticians and plant lab personnel; teachers of agriculture and related subjects; university students in agriculture and related fields; commercial farmers, vegetable producers, and farm managers; agriculturalists in the fields of seed production, vegetable breeding, agrichemicals, pest control, marketing, and other subjects; government and regulatory persons dealing with agriculture; serious gardeners and hobbyists. Crop based organisation for easy diagnosis High quality color photos 444 color illustrations, 5 tables
Download or read book Plant Fungal Pathogens written by Melvin Dennis Bolton and published by Springer Science+Business Media. This book was released on 2012 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt: Including reproducible laboratory protocols, this guide to fungal pathogens in plants has been written by expert researchers in the field and includes methods now used to study them, including techniques for model systems such as Arabidopsis thaliana.
Download or read book Wheat Blast written by Sudheer Kumar and published by CRC Press. This book was released on 2020-04-09 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wheat Blast provides systematic and practical information on wheat blast pathology, summarises research progress and discusses future perspectives based on current understanding of the existing issues. The book explores advance technologies that may help in deciding the path for future research and development for better strategies and techniques to manage the wheat blast disease. It equips readers with basic and applied understanding on the identification of disease, its distribution and chances of further spread in new areas, its potential to cause yield losses to wheat, the conditions that favour disease development, disease prediction modelling, resistance breeding methods and management strategies against wheat blast. Features: Provides comprehensive information on wheat blast pathogen and its management under a single umbrella Covers disease identification and diagnostics which will be helpful to check introduction in new areas Discusses methods and protocol to study the different aspects of the disease such as diagnostics, variability, resistance screening, epiphytotic creation etc. Gives deep insight on the past, present and future outlook of wheat blast research progress This book’s chapters are contributed by experts and pioneers in their respective fields and it provides comprehensive insight with updated findings on wheat blast research. It serves as a valuable reference for researchers, policy makers, students, teachers, farmers, seed growers, traders, and other stakeholders dealing with wheat.
Download or read book Diseases of Horticultural Crops written by and published by Indus Publishing. This book was released on 1999 with total page 740 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book covers around 700 species covering Latin family, common and local names distribution, market rate, chemical constituents. Sketches facilitates identity and comprehension by the reader.
Download or read book Thrips Biology and Management written by Bruce L. Parker and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 606 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thrips (fhysanoptera) are very small insects, widespread throughout the world with a preponderance of tropical species, many temperate ones, and even a few living in arctic regions. Of the approximately 5,000 species so far identified, only a few hundred are crop pests, causing serious damage or transmitting diseases to growing crops and harvestable produce in most countries. Their fringed wings confer a natural ability to disperse widely, blown by the wind. Their minute size and cryptic behavior make them difficult to detect either in the field or in fresh vegetation transported during international trade of vegetables, fruit and ornamental flowers. Many species have now spread from their original natural habitats and hosts to favorable new environments where they often reproduce rapidly to develop intense damaging infestations that are costly to control. Over the past decade there have been several spectacular examples of this. The western flower thrips has expanded its range from the North American continent to Europe, Australia and South Africa. Thrips palmi has spread from its presumed origin, the island of Sumatra, to the coast of Florida, and threatens to extend its distribution throughout North and South America. Pear thrips, a known orchard pest of Europe and the western United States and Canada has recently become a major defoliator of hardwood trees in Vermont and the neighboring states. Local outbreaks of other species are also becoming problems in field and glasshouse crops as the effectiveness of insecticides against them decline.
Download or read book Managing Cover Crops Profitably 3rd Ed written by Andy Clark and published by DIANE Publishing. This book was released on 2008-07 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cover crops slow erosion, improve soil, smother weeds, enhance nutrient and moisture availability, help control many pests and bring a host of other benefits to your farm. At the same time, they can reduce costs, increase profits and even create new sources of income. You¿ll reap dividends on your cover crop investments for years, since their benefits accumulate over the long term. This book will help you find which ones are right for you. Captures farmer and other research results from the past ten years. The authors verified the info. from the 2nd ed., added new results and updated farmer profiles and research data, and added 2 chap. Includes maps and charts, detailed narratives about individual cover crop species, and chap. about aspects of cover cropping.
Download or read book Viral Molecular Machines written by Michael G. Rossmann and published by Springer Science & Business Media. This book was released on 2012-02-02 with total page 685 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book will contain a series of solicited chapters that concern with the molecular machines required by viruses to perform various essential functions of virus life cycle. The first three chapters (Introduction, Molecular Machines and Virus Architecture) introduce the reader to the best known molecular machines and to the structure of viruses. The remainder of the book will examine in detail various stages of the viral life cycle. Beginning with the viral entry into a host cell, the book takes the reader through replication of the genome, synthesis and assembly of viral structural components, genome packaging and maturation into an infectious virion. Each chapter will describe the components of the respective machine in molecular or atomic detail, genetic and biochemical analyses, and mechanism. Topics are carefully selected so that the reader is exposed to systems where there is a substantial infusion of new knowledge in recent years, which greatly elevated the fundamental mechanistic understanding of the respective molecular machine. The authors will be encouraged to simplify the detailed knowledge to basic concepts, include provocative new ideas, as well as design colorful graphics, thus making the cutting-edge information accessible to broad audience.
Download or read book The Bitter Gourd Genome written by Chittaranjan Kole and published by Springer Nature. This book was released on 2020-01-29 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focusing on the bitter gourd genome is the first comprehensive compilation of knowledge on the botany, cytogenetical analysis, genetic resources and diversity, traditional breeding, tissue culture and genetic transformation, whole genome sequencing and comparative genomics in the Cucurbitaceae family. It discusses the biochemical profile of the bioactives present in this horticultural crop, used both as a vegetable and as a medicine, and also addresses sex determination in bitter gourd. Written by respected international experts, the book is useful to students, teachers and scientists in academia, as well as seed companies and pharmaceutical industries.
Download or read book Disease Problems in Vegetable Production 2nd Ed written by Satish K. Gupta and published by Scientific Publishers. This book was released on 2018-04-01 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book entitled “Disease Problems in Vegetable Production” 2nd edition, is specifically prepared for under and post graduate students in Agriculture/ Horticulture and range of professionals including teachers, researchers, extension plant pathologists and elite vegetable growers. The book gives a comprehensive over-view of economic importance, symptomatology, etiology, pre-disposing factors and management of vegetable diseases employing cultural, biological, host resistance, plant extracts and chemical methods as such and in anintegrated approach so that the ravages due to the diseases remain below economic threshold level. A total of 19 chapters dealing with important diseases of vegetables like potato, tomato, crucifers, cucurbits, pea, French bean, chillies and bell pepper, onion, garlic, eggplant, carrot, sugar beet, colocasia, okra and leafy vegetables have been compiled in this book. Two new chapters on diseases of ginger and diseases of vegetables under protected cultivation as well as some important diseases of different vegetable crops left out in the first edition have been added in this edition. Besides, the book also includes chapters on common pathogens of vegetable crops, disease problems in nurseries, post harvest diseases and diseases caused by nematodes. All chapters have been updated in the light of available literature up to 2017. Symptoms, disease cycles of important diseases and different structures of pathogen(s) have also been given in the book that will not only help in better diagnosis and understanding of the perpetuation and spread of the causal pathogens but will also help in the management of these diseases more effectively. Coloured photographs of disease symptoms have also been included for easy identification of vegetable diseases.
