Download or read book Pierce s Disease of Grapevines written by and published by . This book was released on 1982 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pierce s Disease written by Lucia G. Varela and published by UCANR Publications. This book was released on 2001 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication covers the symptoms of Pierce’s disease and offers strategies for management. Included is a description of Pierce’s disease incidence in the various grape growing regions of California; descriptions of the four major insect vectors that spread the disease causing bacterium Xylella fastidiosa; and the role that alternative host plants play as a reservoir of the bacteria. Also included is information on the pattern of spread in vineyards by the different vectors; how to monitor the vectors; and a description of management strategies you can use in your vineyard. Illustrated with 4 tables and 21 color photographs.
Download or read book Pierce s Disease of the Grapevine the Anaheim Disease and the California Vine Disease written by M. W. Gardner and published by . This book was released on 1974 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Further Investigations of the Etiology of Pierce s Disease of Grapevines written by Bernardo A. Latorre-Guzman and published by . This book was released on 1973 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Further Investigations of the Etiology of Pierce s Disease of Grapevines written by Bernardo A. Guzman Latorre and published by . This book was released on 1975 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Areawide Pest Management written by Opender Koul and published by CABI. This book was released on 2008 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pest management has long been a problem for farmers worldwide and new techniques are continually being developed to reduce the adverse effects of pest populations. The use of areawide pest management has increased dramatically over the past decade and offers potential advantages to traditional and more localized approaches. Suppression over a broad area can reduce re-infestation of previously treated areas and the specific pest management techniques may be more effective when applied over larger areas. Providing the first comprehensive discussion of areawide pest management, this book will explore the theoretical development and implementation of techniques from a worldwide perspective. Areas covered include history and development, biological and ecological impacts and recent case studies of pest management programmes.
Download or read book Pierce s Disease of Grapevines written by William Boright Hewitt and published by . This book was released on 1942 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pierce s Disease of Grapevines Classic Reprint written by William Boright Hewitt and published by Forgotten Books. This book was released on 2017-11-19 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Pierce's Disease of Grapevines In addition to the studies reported by these two men, there were others' who made observations and some who conducted experimental work on the nature of this disease. Both Pierce and Dowlen came to similar conclusions: that the disease which caused the death of the vines in southern California was due to some very obscure disease-producing agent that in their opinion was not either bacterial or fungus but was, nevertheless, contagious and spread through the vineyards. They fur ther concluded from their studies that the disease was not associated with any soil types or cultural and irrigation practices. Losses in vineyards of southern California began to decline about 1895, and by this time young plantings near the margins of the diseased areas were developing with the loss of only a few vines each season. After 1900 the disease became obscure or passed unnoticed and very little is known of its occurrence until the recent outbreak of Pierce's disease in the San Joaquin Valley, except that vines of vinifera grape varieties have been notoriously very short-lived in many of the southern California districts. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Download or read book Etiology and Diagnosis of Pierce s Disease of Grapevines written by Jaime Guillermo Auger and published by . This book was released on 1974 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pierce s Disease of Grapevines Indentifying The Primary Vectors In The Southeastern United States written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past 10 years the winegrape industry in the Southeastern United States has experienced rapid growth. However, further expansion may be inhibited by Pierce's disease (PD), caused by the bacterium Xylella fastidiosa that is transmitted from reservoir hosts to grapevines by sharpshooters and spittlebugs. Epidemiological studies were conducted to identify the primary vectors of X. fastidiosa to grapes in the Southeast by surveying sharpshooter populations in the eastern Piedmont and Coastal Plain of North Carolina where PD is most threatening, identifying potential sharpshooter vectors by PCR assays, conducting greenhouse experiments with potential vectors to determine transmission ability, and performing phylogenetic analyses of X. fastidiosa PCR products to provide information on what populations of X. fastidiosa sharpshooters in NC are carrying. In 2004 and 2005, leafhoppers were trapped in three vineyards in the eastern Piedmont and one vineyard in the northeastern Coastal Plain. Four insects have been identified as most abundant, Oncometopia orbona, Graphocephala versuta, Paraphlepsius irroratus, and Agalliota constricta. Specimens of O. orbona, G. versuta, and P. irroratus were tested for the presence of X. fastidiosa using a vacuum extraction method and nested PCR. Over the two seasons 27% of the O. orbona, 24% of the G. versuta, and 33% of the P. irroratus trapped were positive for X. fastidiosa. Transmission experiments were conducted with field-caught O. orbona and G. versuta. One hundred sixty-six vines used in transmission experiments were assayed for the presence of X. fastidiosa by ELISA. Bacterial DNA from an additional sample (n = 6) of symptomatic plants was subjected to two-step PCR to confirm ELISA results. Data indicate both G.versuta and O.orbona transmit X. fastidiosa to grape. Phylogenetic analysis of X. fastidiosa DNA from insects and sequences obtained in silico using Neighbor-Joining of 1000 bootstraps resulted in one most parsimonious t.
Download or read book Pierce s Disease written by Richard Kalin Tracy and published by . This book was released on 1977 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The California Vine Disease written by Newton Barris Pierce and published by . This book was released on 1892 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Development of Pierce s Disease in Grapevines written by Alonso Gastón Pérez-Donoso and published by . This book was released on 2006 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Symbiotic Control of Pirece s Disease of Grapevines written by Arinder Kumar Arora and published by . This book was released on 2010 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Graft transmissible Diseases of Grapevines written by International Council for the Study of Viruses and Virus Diseases of the Grapevine and published by Food & Agriculture Org.. This book was released on 1993 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigations on the Diagnosis Colonization and Epidemiology of Grapevines with Pierce s Disease written by Mandi Ann Vest and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Pierce's disease (PD) of grapevines, caused by Xylella fastidiosa, is devastating Texas vineyards. Two rapid diagnostic techniques, real-time polymerase chain reaction (PCR) and enzyme-linked immunosorbent assay (ELISA), were compared on the basis of cost, reliability, and their ability to quantify X. fastidiosa in diseased tissues. A high correlation was found between the two techniques for measuring bacterial titer in vitro. A similar relationship was not detected when applying the methods to diseased tissue. There was a 75% similarity between the techniques when used to diagnose PD in artificially infected grapevines. Where the two methods differed, real-time PCR was more successful in identifying plants known to be infected with the bacterium. In uninoculated grapevines, the two techniques were similar, where the positive rates were 7% and 4% for ELISA and real-time PCR respectively. In a second study, 3 grape cultivars, 'Cynthiana', 'Cabernet Sauvignon', and 'Chardonnay', were inoculated with 2 isolates of X. fastidiosa to measure disease development and colonization by the pathogen. The bacteria colonized similar distances from the inoculation point over a 25 week period in all three cultivars. Real-time PCR and ELISA absorbance values suggest that the concentrations of bacteria ranged between 104 and 106 cells/ml in a 1.27 cm section of grapevine cane. Concentrations of bacteria didn't vary based on distance from the inoculation point. Marginal leaf-scorch symptoms were seen on 'Cabernet Sauvignon' and 'Chardonnay' grapevines 9 weeks post-inoculation. Leaf-scorch symptoms were not observed on 'Cynthiana'. The vigor of all inoculated grapevines was reduced compared to negative control grapevines the season after initial infection. In a third study, a Texas vineyard planted in Viognier grapevines was surveyed for PD symptoms on 3 separate dates. In October 2003, 45/50 rows had significant aggregation of symptomatic grapevines according to Ordinary Runs Analysis. Aggregation of symptomatic grapevines was found down the row more often than across the row. The rapid rate of disease progress and mortality rate of vines in this vineyard suggest that vine-to-vine spread is occurring and that Viognier vines are highly susceptibly to PD.
Download or read book Grapevine Viruses Molecular Biology Diagnostics and Management written by Baozhong Meng and published by Springer. This book was released on 2017-07-05 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt: The domestication of grapes dates back five thousand years ago and has spread to nearly all continents. In recent years, grape acreage has increased dramatically in new regions, including the United States of America, Chile, Asia (China and India), and Turkey. A major limiting factor to the sustained production of premium grapes and wines is infections by viruses. The advent of powerful molecular and metagenomics technologies, such as molecular cloning and next generation sequencing, allowed the discovery of new viruses from grapes. To date, grapevine is susceptible to 64 viruses that belong to highly diverse taxonomic groups. The most damaging diseases include: (1) infectious degeneration; (2) leafroll disease complex; and (3) rugose wood complex. Recently, two new disease syndromes have been recognized: Syrah decline and red blotch. Losses due to fanleaf degeneration are estimated at $1 billion annually in France alone. Other diseases including leafroll, rugose wood, Syrah de cline and red blotch can result in total crop loss several years post-infection. This situation is further exacerbated by mixed infections with multiple viruses and other biotic as well as adverse abiotic environmental conditions, such as drought and winter damage, causing even greater destruction. The book builds upon the last handbook (written over twenty years ago) on the part of diagnostics and extensively expands its scope by inclusion of molecular biology aspects of select viruses that are widespread and economically most important. This includes most current information on the biology, transmission, genome replication, transcription, subcellular localization, as well as virus-host interactions. It also touches on several novel areas of scientific inquiry. It also contains suggested directions for future research in the field of grapevine virology.
