Download or read book Biological Control of Water Hyacinth with Insect Enemies written by Edward O. Gangstad and published by . This book was released on 1974 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Control of Water Hyacinth with Insect Enemies written by and published by . This book was released on 1974 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aquatic Plant Control Program written by Edward O. Gangstad and published by . This book was released on 1974 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: Present water hyacinth control programs provide at best only short-term control, and thus are of short-term benefit as far as productivity of the environment is concerned, whereas successful biological control will provide long-term benefits to productivity, with a concomitant reduction in the use of chemical or mechanical disturbances of the environment. Once a biological control agent is established, it becomes an integral part of the environment and as such may properly be considered a self-renewable resource, and a beneficial addition to our environment. It is a hope that Neochetina eichhorniae will prove to be just that, and that it will, alone or in conjunction with other native or introduced natural enemies, bring about the alleviation of the problems caused by water hyacinth in the southeastern United States. (Author).
Download or read book Biological Control of Aquatic Nuisances written by Gerald S. Schuytema and published by . This book was released on 1977 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 A Field Test of Selected Insects and Pathogens for Control of Waterhyacinths written by Eugene E. Addor and published by . This book was released on 1977 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the 1975 growing season a field experiment was begun on Lake Concordia, La., to test the potential effectiveness of selected organisms as control agents against waterhyacinths, Eichhornia crassipes (Mart.) Solms. Floating frames, each approximately 2 m square, were anchored on the lake in open water and planted with locally growing waterhyacinths. Sixty of these frames (plots) were selected for treatment with various combinations of two insects (Arzama densa Walker and Neochetina eichhorniae Warner) and two fungi (Acremonium zonatum (Sawada) Gams and Cercospora rodmanii Conway) in a random block factorial arrangement with four replications per treatment, and four frames were designated as control (no-treatment) plots. All plots were weighed at 2-week intervals throughout the growing season, flowering stalks were counted, and plant heights were measured at each weighing date. Observations were also made on insect and pathogen populations on the plots during the season. Preliminary indications are that significant reductions in the growth rate or total accumulation of waterhyacinth mass in the test plots were not achieved by any of the treatment combinations during the first season's tests, but the potential for some of the treatments to effect the desired control began to emerge during the second year.
Download or read book Introduction of the Waterhyacinth Weevil Neochetina Eichhorniae Warner Into Puerto Rico written by and published by . This book was released on 1979 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: The waterhyacinth weevil 'Neochetina eichhorniae Warner' was introduced into quarantine in Puerto Rico in anticipation of future release of the insect to aid in the control of its host aquatic plant 'Eichhornia crassipes (Mart.) Solms'. The insect is being tested for host specificity by subjecting many native plant species to it; these species include many which are of particular ecological or economic significance in Puerto Rico. Although the results are preliminary, this insect species appears to be host specific to waterhyacinth as it proved to be in the continental United States. (Author).
Download or read book Biological Control of Insects Pests written by Bret White and published by Scientific e-Resources. This book was released on 2019-11-07 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Book "e;Biological Control of Insects Pests"e; illustrates how to control biologically the insect's pests. It is important to know when numbers are great enough to justify artificial control and to evaluate the effectiveness of control. The text has been organized very systematically to meet the long-felt needs of increasingly large number of readers. Biological control is the use of living organisms to maintain pest populations below damaging levels. Natural enemies of arthropods fall into three major categories: predators, parasitoids, and pathogens. Predators catch and eat their prey. Some common predatory arthropods include ladybird beetles, carabid (ground) beetles, staphylinid (rove) beetles, syrphid (hover) files, lacewings, minute pirate bugs, nabid bugs, big-eyed bugs, and spiders. Biological control is the beneficial action of parasites, pathogens and predators in managing pests and their damage. Biocontrol provided by these living organisms, collectively known as natural enemies. It is especially important for reducing the number of pest insects and mites. Biological control is the beneficial action of parasites, pathogens, and predators in managing pests and their damage. Biocontrol provided by these living organisms, collectively called "e;natural enemies,"e; is especially important for reducing the numbers of pest insects and mites. Use of natural enemies for biological control of rangeland and wildland weeds is also effective. Plant pathogens, nematodes, and vertebrates also have many natural enemies, but this biological control is often harder to recognize, less well understood, and/or more difficult to manage. Conservation, augmentation, and classical biological control are tactics for harnessing natural enemies' benefits. The book will be highly useful for general entomologists, students of agricultural entomology, teachers and research scholars of zoology, especially entomology.
Download or read book Biological Control of Invasive Plants in the Eastern United States written by and published by . This book was released on 2002 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Control of Pests and Weeds by Natural Enemies written by Roy van Driesche and published by John Wiley & Sons. This book was released on 2009-01-26 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biological control – utilizing a population of natural enemies to seasonally or permanently suppress pests – is not a new concept. The cottony cushion scale, which nearly destroyed the citrus industry of California, was controlled by an introduced predatory insect in the 1880s. Accelerated invasions by insects and spread of weedy non-native plants in the last century have increased the need for the use of biological control. Use of carefully chosen natural enemies has become a major tool for the protection of natural ecosystems, biodiversity and agricultural and urban environments. This book offers a multifaceted yet integrated discussion on two major applications of biological control: permanent control of invasive insects and plants at the landscape level and temporary suppression of both native and exotic pests in farms, tree plantations, and greenhouses. Written by leading international experts in the field, the text discusses control of invasive species and the role of natural enemies in pest management. This book is essential reading for courses on Invasive Species, Pest Management, and Crop Protection. It is an invaluable reference book for biocontrol professionals, restorationists, agriculturalists, and wildlife biologists. Further information and resources can be found on the Editor’s own website at: www.invasiveforestinsectandweedbiocontrol.info/index.htm
Download or read book Suppressing Over Abundant Invasive Plants and Insects in Natural Areas by Use of Their Specialized Natural Enemies written by and published by Government Printing Office. This book was released on with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Natural Enemies written by Ann E. Hajek and published by Cambridge University Press. This book was released on 2004-02-12 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: Publisher Description
Download or read book Proceedings Research Planning Conference on the Aquatic Plant Control Program 19 22 October 1976 Atlantic Beach Fla written by and published by . This book was released on 1977 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecological Research Series written by and published by . This book was released on 1975 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Cyanophage SAM 1 Upon Microcystis Aeruginosa written by D. L. Parker and published by . This book was released on 1977 with total page 738 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological and Integrated Control of Water Hyacinth Eichhornia Crassipes written by International Organization for Biological Control of Noxious Animals and Plants. Working Group for the Biological and Integrated Control of Water Hyacinth. Meeting and published by . This book was released on 2001 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: These papers present work on water hyacinth worldwide and include new research initiatives, overviews of water-hyacinth implementation programmes in various countries and a proposal for a mechanism to facilitate the dissemination of information on water hyacinth through a clearing house.
Download or read book Controlled Release Pesticides Formulations written by Nathan F. Cardarelli and published by CRC Press. This book was released on 2018-01-17 with total page 331 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main goal of this book is to present a summary of the state of the art historical background. Conventional chemical pest control methods are mentioned only as a means of comparison to controlled release. Research endeavour with biological weapons, potential usage of such controls, and the few instances of success are likewise brought into focus with the same motive. Formulations and methods or preparing controlled release pesticides are discussed in some detail as concerns the antifouling and molluscicide areas, where the compounding methodology has been well developed. The mathematical basis of controlled release has been developed to an extent and is presented in an abbreviated form.
