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Author : Parminder S. Multani
Publisher :
ISBN 13 :
Total Pages : 164 pages
Book Rating : 4.:/5 (123 download)
Download or read book Screening Onion Entries for Iris Yellow Spot Virus Resistance written by Parminder S. Multani and published by . This book was released on 2007 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mohsen Mohseni Moghadam
Publisher :
ISBN 13 :
Total Pages : 500 pages
Book Rating : 4.:/5 (668 download)
Download or read book Screening Autumn-and Winter-sown Onion Entries for Iris Yellow Spot Virus Resistance written by Mohsen Mohseni Moghadam and published by . This book was released on 2010 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : John Diaz Montano
Publisher :
ISBN 13 :
Total Pages : 300 pages
Book Rating : 4.:/5 (857 download)
Download or read book Resistance to Onion Thrips (Thrips Tabaci Lindeman) and Incidence of Iris Yellow Spot Virus in Onions written by John Diaz Montano and published by . This book was released on 2011 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Neel Kamal
Publisher :
ISBN 13 :
Total Pages : 300 pages
Book Rating : 4.:/5 (975 download)
Download or read book Selection Progress and Cost Benefit Analysis of Iris Yellow Spot Resistance in Onions written by Neel Kamal and published by . This book was released on 2016 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Onion thrips (Thrips tabaci L.) and Iris yellow spot (IYS) disease caused by thrips-vectored Iris yellow spot virus (IYSV) are significant dangers to the viability of onion production worldwide. The absence of cultivars resistant/ tolerant to thrips and IYS, increased thrips resistance, and limited efficacy restrict growers' options for effective thrips control and reducing the spread of IYSV. The objective of this study were to measure selection progress for reduced/delayed IYS symptom expression after two selection cycles and to estimate the costs and benefits of IYS and/or thrips resistant germplasm. Plants from the original and selected populations along with a susceptible check, 'Rumba', were evaluated for thrips number and IYS disease severity and incidence from 2011 to 2014. First generation selections, NMSU 10-776, 10-807, and 10-813 tested in 2011 and 2012, and second generation selections, NMSU 12-239 and 12-243 tested in 2013 and 2014 had fewer thrips per plant, and lower disease severity and incidence than their original breeding lines on at least one occurrence. In some instances, an improvement in delayed symptom expression was observed with each selection cycle, such as with NMSU 12-243 (2nd), 10-813 (1st), and 07-53-1 (original). While for others, selection progress was not observed until the second selection cycle. Data on onion yield, bulb grades, and acreage were used from the Onion Variety Trails at the Malheur Experiment Station in Ontario, OR and the USDA annual vegetable summaries to estimate average losses under varied levels of thrips and IYS pressure. Average reduction in marketable bulb yield was estimated to be 4%, 10% and 20%, while gross returns were reduced by 4%, 10%, and 21% when 10, 25, and 50 percent of the bulbs in different market grades were reduced to the next lower market grade, respectively. A reduction of one insecticide spray application can increase net returns by $56 to $91 on a per acre basis depending upon the type of chemistry used. Overall, progress was observed in the selected material for reduced and delayed IYS symptom expression with the selection method used and further improvement might be achievable with additional cycles of selection.
Author : Mike Lole
Publisher :
ISBN 13 :
Total Pages : 4 pages
Book Rating : 4.:/5 (11 download)
Download or read book Iris Yellow Spot Virus written by Mike Lole and published by . This book was released on 2008 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Scott M. Fichtner
Publisher :
ISBN 13 : 9780549050889
Total Pages : 120 pages
Book Rating : 4.0/5 (58 download)
Download or read book Iris Yellow Spot Virus in Colorado Onions: A Survey of Its Spatial Distribution and Techniques to Manage the Pest written by Scott M. Fichtner and published by . This book was released on 2007 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Iris yellow spot virus (IYSV) is a new, and at times devastating pathogen of alliums throughout the U.S. as well as many other countries. Since its discovery in Colorado in 2001, IYSV has been identified in nearly all of the major onion producing regions within the state. The severity of this virus disease appears to fluctuate from one year to the next but incidence continues to increase with newly infested fields identified each year. With the number of outbreaks on the rise and the inadequacy of current control strategies, new management techniques as well as novel chemistry pesticides have become a major focus for the management of this virus disease and its thrips vector. Our trials demonstrated the use of reflective materials such as straw or silver reflective mulch can result in a reduction in thrips populations by as much as 69% on onions and a reduction of nearly 9% in IYSV disease incidence. Additionally, Entrust (Spinosad) and Aza-Direct (Neem extract) were found to work as well as or better than conventional materials such as Warrior (Pyrethroid) and Lannate (Carbamate). To better understand the epidemiology of the IYSV pathogen, we also conducted an extensive survey at several locations along the Colorado Front Range and Western Slope. In our surveys, we collected information including thrips populations and incidence of IYSV using 0.2 ha grids developed using mapping software (MapInfo) creating several randomly chosen plots in each field. With data collected on several sampling dates, we attempted to identify a spatial correlation of within field spread of the virus during the growing season. The levels of positive spatial autocorrelation from our survey locations were minimal, this leads us to believe that secondary outbreaks of the disease are occurring in a random fashion across the field.
Author : Natalie P. Goldberg
Publisher :
ISBN 13 :
Total Pages : 2 pages
Book Rating : 4.:/5 (642 download)
Download or read book Iris Yellow Spot Virus written by Natalie P. Goldberg and published by . This book was released on 2005 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Narinder Singh
Publisher :
ISBN 13 :
Total Pages : 160 pages
Book Rating : 4.:/5 (86 download)
Download or read book Selection Progress for Reduced Iris Yellow Spot Symptom Expression in Onion written by Narinder Singh and published by . This book was released on 2013 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Charles Osei Boateng
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (14 download)
Download or read book Physiological responses of onion germplasms to Iris yellow spot virus and onion thrips (Thrips tabaci) written by Charles Osei Boateng and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Bruce L. Parker
Publisher : Springer Science & Business Media
ISBN 13 : 1489914099
Total Pages : 606 pages
Book Rating : 4.4/5 (899 download)
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.
Author : Robert J. McGovern
Publisher :
ISBN 13 : 9783319323749
Total Pages : pages
Book Rating : 4.3/5 (237 download)
Download or read book Handbook of Florists' Crops Diseases written by Robert J. McGovern and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Howard F. Schwartz
Publisher :
ISBN 13 : 9780890543573
Total Pages : 0 pages
Book Rating : 4.5/5 (435 download)
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.
Author : Douglas Kent
Publisher :
ISBN 13 : 9780692800263
Total Pages : 240 pages
Book Rating : 4.8/5 (2 download)
Download or read book California Friendly written by Douglas Kent and published by . This book was released on 2017-03-09 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: California Friendly® is California's future. Water reliability is dependent on using water wisely. We need to create sustainable gardens that rely on less water. This maintenance guide will help you support California's future:*Uncover the secrets of efficient irrigation.*Explore the techniques for irrigating with recycled water.*Get the maintenance tips for hundreds of California Friendly® plants.*Discover the methods and means of managing weed and pest infestations.*Learn how to maintain rainwater capture opportunities.This book has been written for every landscaper, gardener and land manager in Southern California. It has been produced by the very first collaboration between three Southern California organizations, LADWP, MWD and SoCalGas. Grab a copy--they are free--use the information in your garden and help us create a beautiful, thriving and sustainable future.
Author : S. K. Raj
Publisher : Springer Nature
ISBN 13 : 9811639191
Total Pages : 402 pages
Book Rating : 4.8/5 (116 download)
Download or read book Virus Diseases of Ornamental Plants written by S. K. Raj and published by Springer Nature. This book was released on 2021-11-13 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: This edited book elucidates the evolution of plant virus, genomic structure, diversity, plant-virus interaction, subcellular movement etc. The book reviews the biological machineries which allow the emergence of virus populations adapted by plant. The main objective of this book is the demonstration of a clear synergistic effect of plant viruses, an effect that was unexpectedly as important as applied alone. Ornamental plants are very popular and economically important worldwide. The international market of ornamentals is constantly expanding. Viruses and viroids can significantly reduce both decorative value and quality of propagated material of ornamentals. Due to the wide range of ornamental plant species and cultivars and their wide geographical distribution, the diversity of viruses that infect them is also high. The new emerging viruses are the causal agent for the economic loss of many important ornamental plants. Therefore, this book also adds value to current knowledge of virus stress response in ornamental plants and will provide the groundwork necessary for building future strategies for product enhancement. This book is of interest to teachers, researchers, capacity builders and policymakers. It can serve as additional reading material for undergraduate and graduate students of virology, agriculture and plant sciences.
Author : James L. Brewster
Publisher : CABI
ISBN 13 : 1845933990
Total Pages : 454 pages
Book Rating : 4.8/5 (459 download)
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.
Author : Trevor Lewis
Publisher : Cabi
ISBN 13 :
Total Pages : 772 pages
Book Rating : 4.:/5 (89 download)
Download or read book Thrips as Crop Pests written by Trevor Lewis and published by Cabi. This book was released on 1997 with total page 772 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive treatise on thrips as crop pests set against a background covering basic biology, ecology, applied science and pest control.
Author : The Onion
Publisher : Little, Brown
ISBN 13 : 031613323X
Total Pages : 259 pages
Book Rating : 4.3/5 (161 download)
Download or read book The Onion Book of Known Knowledge written by The Onion and published by Little, Brown. This book was released on 2012-10-23 with total page 259 pages. Available in PDF, EPUB and Kindle. Book excerpt: Are you a witless cretin with no reason to live? Would you like to know more about every piece of knowledge ever? Do you have cash? Then congratulations, because just in time for the death of the print industry as we know it comes the final book ever published, and the only one you will ever need: The Onion's compendium of all things known. Replete with an astonishing assemblage of facts, illustrations, maps, charts, threats, blood, and additional fees to edify even the most simple-minded book-buyer, The Onion Book of Known Knowledge is packed with valuable information -- such as the life stages of an Aunt; places to kill one's self in Utica, New York; and the dimensions of a female bucket, or "pail." With hundreds of entries for all 27 letters of the alphabet, The Onion Book of Known Knowledge must be purchased immediately to avoid the sting of eternal ignorance.
