Download or read book Parasitization of the Beet Leafhopper in Relation to Its Dissemination in Southern Idaho Classic Reprint written by Charles Franklin Henderson and published by Forgotten Books. This book was released on 2018-09-11 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Parasitization of the Beet Leafhopper in Relation to Its Dissemination in Southern Idaho Large numbers of leafhoppers were collected before and after the fall and spring movements to determine the comparative percentages of parasitization, and to estimate the loss in parasites associated with the movement of the hosts from one breeding area to another. 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 Parasitization of the Beet Leafhopper in Relation to Its Dissemination in Southern Idaho written by Charles F. Henderson and published by . This book was released on 1955 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Movements of the Beet Leaf Hopper in 1930 in Southern Idaho Classic Reprint written by Percy Nicol Annand and published by Forgotten Books. This book was released on 2017-11-19 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Movements of the Beet Leaf Hopper in 1930 in Southern Idaho Old glue type traps be ing replaced by new wire maze trap. Col lections henceforth refer only to new trap. 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 Movements of the Beet Leaf Hopper in 1930 in Southern Idaho written by Percy Nicol Annand and published by . This book was released on 1932 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Beet Leaf hopper Eutettix Tenellus Baker written by Rowland W. Haegele and published by . This book was released on 1927 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Natural Replacement of Weed Hosts of the Beet Leafhopper as Affected by Rodents Classic Reprint written by Robert Louis Piemeisel and published by Forgotten Books. This book was released on 2018-09-11 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Natural Replacement of Weed Hosts of the Beet Leafhopper as Affected by Rodents Some apparently erratic changes, however, in the successions of vegetation that took place on areas where burning, plowing, and overgrazing were prevented were not explained. The eco logical studies as made from 1930 to 1944 on three 40-acre fenced plots and on unfenced tracts in southern Idaho now indicate that such variable behavior was due to destruction of vegetation by native animals, chiefly jack rabbits. These observations, reported and interpreted in this circular, demonstrate that in addition to burning, plowing, and excessive grazing, the feeding by rodents is a factor that in some instances disrupts plant successions and thereby retards the natural replacement of weed hosts of the insect vector of the curly top Virus. The studies of plant successions have thus produced results that are useful as apart of the basic information needed in promoting production of sugar beets and other crops affected by curly top. They also contribute toward a better understanding of range management problems in an area subject to intermittent farming. They should aid in the development of wise land use practices - a consideration of long-time significance and increasing importance. The studies deal specifically with communities of annual plants found on the desert-dry outlying lands bordering cultivated dis tricts and on range lands that were formerly covered by the northern desert-shrub type of vegetation - sagebrush, with its associated perennial grasses, and herbaceous perennials. Al though the communities of annual plants may be different on the nearby foothills and on higher plains and valleys of southern Idaho where the plant cover formerly consisted of other types of native perennial vegetation, some of the essential results of these studies will apply to these areas also, as they have already been found applicable in somewhat similar investigations in the San Joaquin Valley, Calif. This circular deals with the data obtained and the conclusions derived from their interpretation. 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 Preliminary Statement of a Program for the Control of Beet Leafhopper and Curly Top Outbreaks in Idaho with Notes on the Progress Made Toward Its Inauguration written by United States. Bureau of Entomology and Plant Quarantine and published by . This book was released on 1934 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Beet Leafhopper Control in Weed Host Areas of Idaho to Protect Snapbean Seed From Curly Top Classic Reprint written by James Robert Douglass and published by Forgotten Books. This book was released on 2018-09-12 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Beet Leafhopper Control in Weed-Host Areas of Idaho to Protect Snapbean Seed From Curly Top Because of the seriousness of the problem, a. Project was undertaken in 1949 to determine whether this crop could be protected by destroy ing the leafhoppers in their spring breeding grounds before they moved into the cultivated areas. About acres were sprayed with pyrethrum, but later studies of the beanfields showed that the inci dence of curly top was not below the expected. High populations of beet leaf hoppers were present. Over large acreages of weed hosts in the springs of 1950 and 1953. In these re spective years approximately and acres of heavily infested m'ld mustards were sprayed with ddt. The spray was applied with turbine blowers at rates ranging from to pound of ddt in 2 gallons of emulsion per acre. The populations were reduced 94 and 98 percent at costs of 89 and 86 cents per acre. 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 Preliminary Statement of a Program for the Control of Beet Leafhopper and Curly Top Outbreaks in Idaho with Notes on the Progress Made Toward Its Inauguration written by United States. Bureau of Entomology and Plant Quarantine and published by . This book was released on 1934 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Beet Leafhopper Classic Reprint written by James Robert Douglass and published by Forgotten Books. This book was released on 2018-01-09 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Beet Leafhopper The beet leafhopper is a serious menace to sugar beet, bean, tomato, and other crops in the West, not because of direct damage by feeding, but because it transmits curly top disease. It is the only known carrier of this disease, which attacks many important agricultural crops, ornamental plants, and weeds. A sun-loving, dry-land insect, the leafhopper breeds in vast areas of weeds that have grown up on abandoned farmlands and deteriorated range. The misuse of land and the appearance of new weeds have created large tracts in the West which serve as breeding grounds for the leafhopper and as reservoirs of the curly top virus. When the weed hosts mature and dry, the nymphs die, and the adults that have not already moved are forced to find new food plants. They often travel long distances with the help of the wind. Generally, however, the movement is from the desert or rangeland to adjacent cultivated areas. In the course of these movements cultivated crops are infected with curly top (fig. 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 Biological Control Measures of Success written by G. Gurr and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt: As well as examining successful biological control programmes this book analyses why the majority of attempts fail. Off-target and other negative effects of biological control are also dealt with. Chapters contributed by leading international researchers and practitioners in all areas of biological control afford the book a breadth of coverage and depth of analysis not possible with a single author volume. Combined with the use of other experts to review chapters and editorial oversight to ensure thematic integrity of the volume, this book provides the most authoritative analysis of biological control published. Key aspects addressed include how success may be measured, how successful biological control has been to date and how may it be made more successful in the future. With extensive use of contemporary examples, photographs, figures and tables this book will be invaluable to advanced undergraduate and postgraduate students as well as being a `must' for all involved in making biological control successful.
Download or read book Plant Pathology written by George Agrios and published by Elsevier. This book was released on 2012-12-02 with total page 646 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plant Pathology presents information and advances in plant pathology including disease induction and development and disease resistance and control. This book is organized into two major parts encompassing 14 chapters that focus on diseases, pathogenicity, and pathogen variability. The first part of the book deals with general considerations of disease, the disease cycle, parasitism and pathogenicity, and the variability in pathogens. This is followed by a presentation of the mechanisms by which pathogens cause disease and plants resist disease. Core chapters focus on the effects of pathogen-produced enzymes, toxins, growth regulators, and polysaccharides on the structural organization and on the basic physiological processes of photosynthesis, translocation, and respiration. The chapters also discuss the defense mechanisms of the plant. Moreover, this book explains the genetics of host-parasite interaction, effects of environment on disease development, and control. The second part of the book deals with the infectious diseases caused by fungi, bacteria, parasitic higher plants, viruses, and nematodes. This part also looks into the noninfectious diseases caused by environmental factors. The diseases caused by each type of pathogen are discussed comprehensively as a group and are subsequently discussed individually in detail. This book includes diagrams of cycles for each disease to create visual images for better understanding of the disease and message retention. This book is ideal for students with introductory course in plant pathology.
Download or read book Integrated Pest Management written by Rajinder Peshin and published by Springer. This book was released on 2009-04-29 with total page 1324 pages. Available in PDF, EPUB and Kindle. Book excerpt: This interdisciplinary text offers updated knowledge on pest management. It discusses dissemination and impact on a range of crops across the globe on industrialized and subsistence level farms. It also explores the effect of the green revolution on IPM.
Download or read book General Concepts in Integrated Pest and Disease Management written by A. Ciancio and published by Springer Science & Business Media. This book was released on 2007-07-20 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: This, the first volume of the ‘Integrated Management of Plant Pests and Diseases’ book series, presents general concepts on integrated pest and disease management. Section one includes chapters on infection models, resurgence and replacement, plant disease epidemiology and effects of climate change in tropical environments. The second section includes remote sensing and information technology. Finally, the third section covers molecular aspects of the subject.
Download or read book Insects at Low Temperature written by Richard Lee and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of insects at low temperature is a comparatively new field. Only recently has insect cryobiology begun to mature, as research moves from a descriptive approach to a search for underlying mechanisms at diverse levels of organization ranging from the gene and cell to ecological and evolutionary relationships. Knowledge of insect responses to low temperature is crucial for understanding the biology of insects living in seasonally varying habitats as well as in polar regions. It is not possible to precisely define low temperature. In the tropics exposure to 10-15°C may induce chill coma or death, whereas some insects in temperate and polar regions remain active and indeed even able to fly at O°C or below. In contrast, for persons interested in cryopreservation, low temperature may mean storage in liquid nitrogen at - 196°C. In the last decade, interest in adaptations of invertebrates to low temperature has risen steadily. In part, this book had its origins in a symposium on this subject that was held at the annual meeting of the Entomological Society of America in Louisville, Kentucky, USA in December, 1988. However, the emergence and growth of this area has also been strongly influenced by an informal group of investigators who met in a series of symposia held in Oslo, Norway in 1982, in Victoria, British Columbia, Canada in 1985 and in Cambridge, England in 1988. Another is scheduled for Binghamton, New York, USA (1990).
Download or read book Rice Black Bugs written by Ravindra C. Joshi and published by . This book was released on 2007 with total page 816 pages. Available in PDF, EPUB and Kindle. Book excerpt: Systematics. Ecology and management. Biological control. Botanical control. Varietal control. Chemical control. Country reports. Information database.
Download or read book Virus Diseases of Trees and Shrubs written by J.I. Cooper and published by Springer Science & Business Media. This book was released on 1993-09-30 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the second edition of a widely-respected book covering all aspects of virus pathology of trees and shrubs. This new edition contains much new information and the inclusion of a colour plate section will be of great use in symptom recognition.
