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Author: Jacobus Christian Faure
Publisher:
ISBN:
Category : Locusts
Languages : en
Pages : 38
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Book Description
Author: Jacobus Christian Faure
Publisher:
ISBN:
Category : Locusts
Languages : en
Pages : 38
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Book Description
Author: South Africa. Department of Agriculture
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 112
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Book Description
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309164540
Category : Technology & Engineering
Languages : en
Pages : 378
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Book Description
This report is the second in a series of three evaluating underexploited African plant resources that could help broaden and secure Africa's food supply. The volume describes the characteristics of 18 little-known indigenous African vegetables (including tubers and legumes) that have potential as food- and cash-crops but are typically overlooked by scientists and policymakers and in the world at large. The book assesses the potential of each vegetable to help overcome malnutrition, boost food security, foster rural development, and create sustainable landcare in Africa. Each species is described in a separate chapter, based on information gathered from and verified by a pool of experts throughout the world. Volume I describes African grains and Volume III African fruits.
Author: Jeffrey A. Lockwood
Publisher: Basic Books
ISBN: 0786738871
Category : History
Languages : en
Pages : 322
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Book Description
Throughout the nineteenth century, swarms of locusts regularly swept across the continent, turning noon into dusk, demolishing farm communities, and bringing trains to a halt as the crushed bodies of insects greased the rails. In 1876, the U.S. Congress declared the locust "the single greatest impediment to the settlement of the country." From the Dakotas to Texas, from California to Iowa, the swarms pushed thousands of settlers to the brink of starvation, prompting the federal government to enlist some of the greatest scientific minds of the day and thereby jumpstarting the fledgling science of entomology. Over the next few decades, the Rocky Mountain locust suddenly -- and mysteriously -- vanished. A century later, Jeffrey Lockwood set out to discover why. Unconvinced by the reigning theories, he searched for new evidence in musty books, crumbling maps, and crevassed glaciers, eventually piecing together the elusive answer: A group of early settlers unwittingly destroyed the locust's sanctuaries just as the insect was experiencing a natural population crash. Drawing on historical accounts and modern science, Locust brings to life the cultural, economic, and political forces at work in America in the late-nineteenth century, even as it solves one of the greatest ecological mysteries of our time.
Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 472
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Book Description
Author: Estelita Vaz
Publisher: Springer
ISBN: 3319410857
Category : Science
Languages : en
Pages : 358
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Book Description
This book is the product of the 2nd World Conference on Environmental History, held in Guimarães, Portugal, in 2014. It gathers works by authors from the five continents, addressing concerns raised by past events so as to provide information to help manage the present and the future. It reveals how our cultural background and examples of past territorial intervention can help to combat political and cultural limitations through the common language of environmental benefits without disguising harmful past human interventions. Considering that political ideologies such as socialism and capitalism, as well as religion, fail to offer global paradigms for common ground, an environmentally positive discourse instead of an ecological determinism might serve as an umbrella common language to overcome blocking factors, real or invented, and avoid repeating ecological loss. Therefore, agency, environmental speech and historical research are urgently needed in order to sustain environmental paradigms and overcome political, cultural an economic interests in the public arena. This book intertwines reflections on our bonds with landscapes, processes of natural and scientific transfer across the globe, the changing of ecosystems, the way in which scientific knowledge has historically both accelerated destruction and allowed a better distribution of vital resources or as it, in today’s world, can offer alternatives that avoid harming those same vital natural resources: water, soil and air. In addition, it shows the relevance of cultural factors both in the taming of nature in favor of human comfort and in the role of the environment matters in the forging of cultural identities, which cannot be detached from technical intervention in the world. In short, the book firstly studies the past, approaching it as a data set of how the environment has shaped culture, secondly seeks to understand the present, and thirdly assesses future perspectives: what to keep, what to change, and what to dream anew, considering that conventional solutions have not sufficed to protect life on our planet.
Author: S. Krall
Publisher: Birkhäuser
ISBN: 3034892020
Category : Technology & Engineering
Languages : en
Pages : 487
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Book Description
In the late eighties large-scale control operations were carried out to control a major desert locust upsurge in Africa. For the first time since the banning of organochlorine pesticides these operations relied mainly on non-persistent pesticides such as organophosphates and pyrethroids. The amount of pesticides sprayed and the area covered were probably the highest in the history of locust control and raised criticism with respect to efficacy, economic viability and environmental impact. As a consequence, applied research into the problem was intensified, both at the national and the international level, with the goal of finding new and environmentally sound approaches and solutions to locust and grasshopper control. Emphasis was laid on developing new control agents and techniques.
Author: Stephan Krall
Publisher: Springer Science & Business Media
ISBN: 9783764354428
Category : Technology & Engineering
Languages : en
Pages : 560
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Book Description
In the late eighties large-scale control operations were carried out to control a major desert locust upsurge in Africa. For the first time since the banning of organochlorine pesticides these operations relied mainly on non-persistent pesticides such as organophosphates and pyrethroids. The amount of pesticides sprayed and the area covered were probably the highest in the history of locust control and raised criticism with respect to efficacy, economic viability and environmental impact. As a consequence, applied research into the problem was intensified, both at the national and the international level, with the goal of finding new and environmentally sound approaches and solutions to locust and grasshopper control. Emphasis was laid on developing new control agents and techniques.
Author: Boris Petrovich Uvarov
Publisher:
ISBN:
Category : Grasshoppers
Languages : en
Pages : 416
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Book Description
Author: R. F. Chapman
Publisher: John Wiley & Sons
ISBN: 9780471609018
Category : Science
Languages : en
Pages : 586
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Book Description
Novel Aspects of Insect-Plant Interactions Edited by Pedro Barbosa and Deborah Letourneau This volume represents the forefront of two rapidly advancing areas of ecology: three-trophic-level interactions and the interdisciplinary field of chemical ecology The book focuses on the role of microorganisms as mediators of interactions between insects and plants, providing critical appraisal of studies and suggesting ways to integrate competing hypotheses of insect-plant dynamics. 1988 (0 471-83276-6) 362 pp. Arthropod Biological Control Agents and Pesticides Brian A. Croft Examining the effects of pesticides on predators and parasites and exploring methods for reducing negative impacts of pesticide use, this book focuses on the interaction of pesticides with entomophagous arthropods. It surveys the history of research in the field and discusses susceptibility assessment, lethal, sublethal, and ecological effects of pesticides, and selectivity, resistance, and resistance management. 1990 (0 471-81975-1) 723 pp. Lepidopteran Anatomy, John Eaton This single-source treatment on the anatomy of Lepidoptera provides a detailed exposition of its anatomy plus all its life stages, including the larva and adult forms of the exoskeleton, musculature, organ systems, and specialized structures. As the only thorough examination of the morphology of this insect group, it is an essential acquisition for entomologists, morphologists, and insect physiologists. 1988 (1-05862-9) 257 pp. Integrated Pest Management Systems and Cotton Production Edited by Ray Frisbie, Kamal El-Zik, and L. Ted Wilson The most complete and authoritative work available on the subject, this book brings together information on integrated pest management strategies that are applicable to cotton. It addresses economic, agronomic, and biological factors of pest management and focuses on plant resistance to pests and the genetic rationale for improving plant health. 1989 (0 471-81782-1) 437 pp.
