Investigation Of Virus Diseases Of Brassica Crops

Originally published in 1957, as number 14 in the Agricultural Research Council Report Series, this book was created in response to serious losses in brassica crop production caused by viral diseases. The text was the product of experiments and observations carried out under a wide range of conditions in various parts of Britain. Information is provided on the causes of disease and the reaction of plants to infection, together with practical methods for controlling the spread of viruses. Illustrative figures are also included. This book will be of value to anyone with an interest in the development of farming and the history of agriculture.

This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

This book comprehensively reviews current pest management practices and explores novel integrated pest management strategies in Brassica oilseed crops. It is essential reading for pest management practitioners and researchers working on pest management in canola and other Brassica crops worldwide. Canola, mustard, camelina and crambe are the most important oilseed crops in the world. Canola is the second largest oilseed crop in the world providing 13% of the world's supply. Seeds of these species commonly contain 40% or more oil and produce meals with 35 to 40% protein. However, its production has declined significantly in recent years due to insect pest problems. The canola pest complexes are responsible for high insecticide applications on canola. Many growers rely on calendar-based spraying schedules for insecticide applications. The diamondback moth Plutella xylostella and flea beetles Phyllotreta spp. (P. cruciferae and P. striolata)cause serious damage to canola. In the Northern Great Plains, USA, for instance, P. xylostella is now recorded everywhere that canola is grown. Severe damage to canola plants can be caused by overwintering populations of flea beetles feeding on newly emerged seedlings. Cabbage seed pod weevil (Ceutorhynchus obstrictus), swede midge (Contarinia nasturtii), and tarnished plant bug (Lygus lineolaris) are also severe pests on canola. Minor pests include aphids (cabbage aphid, Brevicoryne brassicae and turnip aphid, Hyadaphis erysimi) and grasshopper, Melanoplus sanguinipes.

Describes the diseases of important vegetable crops and tells how to control them. Covers all disease types: bacterial, fungal, viral, nematode, and abiotic, and provides information on their cycles. Describes control measures, including resistant varieties, fungicides, crop rotation, and seed treatments. Well-illustrated and readable. Completely revised from first edition.

Advances in Virus Research

Plant Pathology: An Advanced Treatise, Volume III: The Diseased Population Epidemics and Control deals with the epidemics of the diseased population of plants and their forecasting and control. The book highlights the public health implications of plant pathology, giving major consideration to inoculum production, dispersal, and control. This volume is organized into 14 chapters and begins with an overview of populations of inoculum and the consequences of cultivation, emphasizing the inoculum potential. The next chapters focus on the autonomous dispersal of plant pathogens through the soil, seeds, or plant parts; the inoculum dispersal by animals, humans, air, and water; and the factors and processes that trigger an epidemic. The book also introduces the reader to the physical, chemical, and biological aspects of the performance of fungicides on plants and in soil, and then concludes by discussing the genetics of disease resistance and problems associated with plant breeding. This book is a valuable resource for those who are interested in a theoretical treatment of plant pathology and in the broad ecological relationships among organisms, as well as for research workers and advanced students of applied biology.

Weather and Agriculture presents the major principles involved in the integrated study of weather and agriculture. The book is divided into three sections. Part I discusses the aspects of environmental factors and their validity and measurement. Part II presents a selection of the weather hazards and their relation to agricultural practice. The last section focuses on productivity, the efficient maximization of available resources towards economic ends. Meteorologists, agriculturists, and pedologists will find the book invaluable.

Introgression is the incorporation of a gene from one organism complex into another as a result of hybridization. A major concern with the use of genetically modified plants is the unintentional spread of the new genes from cultivated plants to their wild relatives and the subsequent impacts on the ecology of wild plants and their associated flora and fauna.The book reviews these issues, focusing on the ecological and evolutionary effects of introducing GM cultivars. It presents current knowledge of crop-wild relatives hybridization and introgression, and the measurement and prediction of their consequences. As a result it represents a major contribution to the debate about the risks of GM crops and measures, such as post commercialisation monitoring, required to determine the longer term impacts of GM crops on ecosystems.The book presents edited and revised presentations given at a conference of the same name, organised in January 2003 by the University of Amsterdam (Netherlands) and the Robert Koch Institute (Germany), on behalf of the European Science Foundation funded program for Assessment of the Impacts of Genetically Modified Plants (AIGM ).

The seminal text Plant Virology is now in its fifth edition. It has been 10 years since the publication of the fourth edition, during which there has been an explosion of conceptual and factual advances. The fifth edition of Plant Virology updates and revises many details of the previous edition while retaining the important earlier results that constitute the field's conceptual foundation. Revamped art, along with fully updated references and increased focus on molecular biology, transgenic resistance, aphid transmission, and new, cutting-edge topics, bring the volume up to date and maintain its value as an essential reference for researchers and students in the field. Thumbnail sketches of each genera and family groups Genome maps of all genera for which they are known Genetic engineered resistance strategies for virus disease control Latest understanding of virus interactions with plants, including gene silencing Interactions between viruses and insect, fungal, and nematode vectors Contains over 300 full-color illustrations

***e FACHGEBIET*** Agriculture, Agronomy, Forestry, Horticulture, Soil Science, Environmental Science (esp. Plant Ecology), Agricultural Chemistry, Agricultural Economics, Natural Resource Economics, Sociology, and Anthropology ***INTERESSENTENGRUPPE*** Of interest to researchers, students, and professionals in the above fields.- Level: Technical Book, Monograph ***URHEBER*** S.R. Gliessman, University of California, Santa Cruz, CA (Ed.) ***TITEL*** Agroecology ***UNTERTITEL*** Researching the Ecological Basis for Sustainable Agriculture ***BIBLIOGRAPHISCHE-ANGABEN*** 1990. XIV, 380 pp. 87 figs. (Ecological Studies. Eds.: W.D. Billings, F. Golley, O.L. Lange, J.S. Olson, H. Remmert. Vol. 78) Hardcover DM 198,- ISBN 3-540-97028-2 ***CONTENTS*** Contents: Part I: Basic Ecological Concepts in Agroecosystems.- Part II: Agroecosystem Design and Management.- Index. ***LANGTEXT*** This book provides an introduction to research approaches in the emerging interdisciplinary field of agroecology. It demonstrates in a series of international case studies how to combine the more production-oriented focus of the agronomist with the more systems-oriented viewpoint of the ecologist. Different methodologies for quantifying and evaluating agroecosystem sustainability are presented and analyzed. Leading researchers in the field provide examples of the diversity and complexity of agroecological research, ranging from archeology to insect ecology, and examine design and management of agroecosystems that span from the humid tropics to temperate regions. This timely overview will be of great value to ecologists, agronomists, geographers, foresters, anthropologists, and others involved in developing a sustainable basis for land use, management, and conservation worldwide. ***RS-ENDE*** RS 11/89 PREX ***RS-NOTIZEN*** NY/Dr. Czeschlik

Aphids as Virus Vectors focuses on aphids as vectors of plant viruses and the fundamentals of their relationship with virus and host. The mouthparts and feeding mechanism of aphids are discussed, along with aphid penetration of plant tissues and the transmission mechanisms of aphids as virus vectors. The intrinsic properties and taxonomy of aphid-borne viruses are also examined. Comprised of 22 chapters, this book begins with an overview of the importance of aphids as vectors, their biology, and the properties of the viruses they transmit. These introductory chapters prepare the reader for later ones on aphid-virus-plant interactions. The next section deals with transmission mechanisms, with emphasis on several novel alternatives to many of the traditionally held concepts of how aphids transmit viruses. Accessory factors in non-persistent virus transmission are considered. Subsequent chapters focus on technological advances in aphid-virus research, including the use of aphid cell culturing, radioisotope methodology, membrane feeding, and electrical measurement systems. The most promising frontiers in epidemiological and control-oriented research are discussed in the last two sections. This monograph will be a useful resource for researchers from such varied sciences as entomology, plant science, and virology, as well as for graduate students taking entomology and plant pathology courses on insects in relation to plant diseases.