Download or read book The Biological Campaign Against Prickly Pear By Alan P Dodd With Plates and a Map written by Australia. Commonwealth Prickly Pear Board and published by . This book was released on 1940 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Biological Campaign Against Prickly pear written by Alan Parkhurst Dodd and published by . This book was released on 1940 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Biological Campaign Against Prickly pear written by Alan Parkhurst Dodd and published by . This book was released on 1940 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Prickly Pear written by William Beinart and published by NYU Press. This book was released on 2011-11-01 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: An explanation of how an invasive cactus from Mexico became a source of income in Africa While there are many studies of the global influence of crops and plants, this is perhaps the first social history based around a plant in South Africa. Plants are not quite historical actors in their own right, but their properties and potential help to shape human history. Plants such as prickly pear tend to be invisible to those who do not use them, or at least on the peripheries of people's consciousness. This book explains why they were not peripheral to many people in the Eastern Cape and why a wild and sometimes invasive cactus from Mexico, that found its way around the world over 200 years ago, remains important to African women in shacks and small towns. The central tension at the heart of this history concerns different and sometimes conflicting human views of prickly pear. Some accepted or enjoyed its presence; others wished to eradicate it. While commercial livestock farmers initially found the plant enormously valuable, they came to see it as a scourge in the early twentieth century as it invaded farms and commonages. But for impoverished rural and small town communities of the Eastern Cape it was a godsend. In some places it still provides a significant income for poor black families. Debates about prickly pear - and its cultivated spineless variety - have played out in unexpected ways over the last century and more. Some scientists, once eradicationists, now see varieties of spineless cactus as plants for the future, eminently suited to a world beset by climate change and global warming. The book also addresses central problems around concepts of biodiversity. How do we balance, on the one hand, biodiversity conservation with, on the other, a recognition that plant transfers - and species transfers more generally - have been part of dynamic production systems that have historically underpinned human civilizations. American plants such as maize, cassava and prickly pear have been used to create incalculable value in Africa. Transferred plants are at the heart of many agricultural systems, as well as hybrid botanical and cultural landscapes, sometimes treasured, that are unlikely to be entirely reversed. Some of these plants displace local species, but are invaluable for local livelihoods. Prickly Pear explores this dilemma over the long term and suggests that there must be a significant cultural dimension to ideas about biodiversity. The content of Prickly Pear is based on intensive archival research, on interviews conducted in the Eastern Cape by the authors, as well as on their observations of how people in the area use and consume the plant.
Download or read book Woody Plants and Woody Plant Management written by Rodney W. Bovey and published by CRC Press. This book was released on 2001-03-29 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt: A presentation of strategies for managing woody plants and using research data to select the most appropriate control methods. It analyzes the responses of over 370 North American woody plants to commercially available herbicides. The authors provide methods to manage woody plants that interfere with recreation, watershed yield, animal and plant diversity, resource conservation, wildlife and livestock needs, and wood production on grazing, forest, and related land.
Download or read book Experiment Station Record written by U.S. Office of Experiment Stations and published by . This book was released on 1944 with total page 1158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Handbook of Mites of Economic Plants written by Vincenzo Vacante and published by CABI. This book was released on 2015-12-21 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mites pose a serious problem to plants worldwide, attacking crops and spreading disease. When mites damage crops of economic importance the impacts can be felt globally. Mites are among the most diverse and successful of invertebrates, with over 45,000 described species, with many more thousands to be discovered. They are responsible for a significant portion of the losses of crops for food, fibre, industry and other purposes, and require expensive and often controversial pest control measures. Understanding these mites is vital for entomologists, pest researchers, agronomists and food producers. Knowledge of mite pests helps to inform control strategies and optimize the production of economic plants and the agrarian economy. This encyclopedia provides a thorough coverage of the mites and the problems they cause to crops, yet it is easily searchable, organised by mite species and subdivided into helpful headings. It takes a worldwide view of the issue of mites injurious to economic plants, describing mites prevalent in different regions and discussing control methods appropriate in different environments. This book provides an encyclopaedic reference to the major mites, described by family in terms of their internal and external morphology, bio-ecology and family systematics. Methods of mite collection and laboratory study is described, as well as species diagnostic characteristics, worldwide distribution, host plants, identification by the type of damage they cause and control strategies, including chemical and biological intervention and integrated pest management measures. Mites of the following families are included: (Eriophyoidea, Tarsonemidae, Tuckerellidae, Tenuipalpidae, Tetranychidae, Acaridae, Penthaleidae). Mites of Economic Plants is an important resource for students of entomology and crop production, and as a thorough reference guide for researchers and field workers involved with mites, crop damage and food production.
Download or read book Area wide Integrated Pest Management written by Jorge Hendrichs and published by CRC Press. This book was released on 2021-02-01 with total page 1028 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over 98% of sprayed insecticides and 95% of herbicides reach a destination other than their target species, including non-target species, air, water and soil. The extensive reliance on insecticide use reduces biodiversity, contributes to pollinator decline, destroys habitat, and threatens endangered species. This book offers a more effective application of the Integrated Pest Management (IPM) approach, on an area-wide (AW) or population-wide (AW-IPM) basis, which aims at the management of the total population of a pest, involving a coordinated effort over often larger areas. For major livestock pests, vectors of human diseases and pests of high-value crops with low pest tolerance, there are compelling economic reasons for participating in AW-IPM. This new textbook attempts to address various fundamental components of AW-IPM, e.g. the importance of relevant problem-solving research, the need for planning and essential baseline data collection, the significance of integrating adequate tools for appropriate control strategies, and the value of pilot trials, etc. With chapters authored by 184 experts from more than 31 countries, the book includes many technical advances in the areas of genetics, molecular biology, microbiology, resistance management, and social sciences that facilitate the planning and implementing of area-wide strategies. The book is essential reading for the academic and applied research community as well as national and regional government plant and human/animal health authorities with responsibility for protecting plant and human/animal health.
Download or read book Encyclopedia of Biological Invasions written by Daniel Simberloff and published by Univ of California Press. This book was released on 2011-01-02 with total page 792 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Addresses all aspects of this subject at a global level--including invasions by animals, plants, fungi, and bacteria--in succinct, alphabetically arranged articles. Featuring many cross-references, suggestions for further reading, illustrations, an appendix of the world's worst 100 invasive species, a glossary, and more..." -- From the publisher.
Download or read book Rangeland Ecology And Management written by Harold Heady and published by Routledge. This book was released on 2019-05-20 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: The science of range management, like many other resource disciplines, has embraced and integrated environmental concerns in the field, the laboratory, and policy. Rangeland Ecology and Management now brings this integrated approach to the classroom in a thoroughly researched, comprehensive, and readable text. The authors discuss the basics of ran
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 Environmental Standards written by Christian Streffer and published by Springer Science & Business Media. This book was released on 2003-08-04 with total page 862 pages. Available in PDF, EPUB and Kindle. Book excerpt: The rapid growth of the world population - nearly six-fold over the last hundred years - combined with the rising number of technical installations especially in the industrialized countries has lead to ever tighter and more strained living spaces on our planet. Because ofthe inevitable processes oflife, man was at first an exploiter rather than a careful preserver of the environment. Environmental awareness with the intention to conserve the environment has grown only in the last few decades. Environmental standards have been defined and limit values have been set largely guided, however, by scientific and medical data on single exposures, while public opinion, on the other hand, now increasingly calls for astronger consideration of the more complex situations following combined exposures. Furthermore, it turned out that environmental standards, while necessarily based on scientific data, must also take into account ethical, legal, economic, and sociological aspects. A task of such complexity can only be dealt with appropriately in the framework of an inter disciplinary group.
Download or read book Assessment and Management of Plant Invasions written by James O. Luken and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 333 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biological invasion of native plant communities is a high-priority problem in the field of environmental management. Resource managers, biologists, and all those involved in plant communities must consider ecological interactions when assessing both the effects of plant invasion and the long-term effects of management. Sections of the book cover human perceptions of invading plants, assessment of ecological interactions, direct management, and regulation and advocacy. It also includes an appendix with descriptive data for many of the worst weeds.
Download or read book Beneficial Microorganisms in Agriculture Food and the Environment written by Ingvar Sundh and published by CABI. This book was released on 2012 with total page 343 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microorganisms are widely used in various beneficial applications, including food, pest control, bioremediation, biodegradation, biofuel processes, and plant symbiosis and growth stimulation. This book provides an overview of the available methodology for safety assessments of microorganisms, including determination of their infectivity and whether they produce toxic or sensitizing substances. Also covered are the regulatory systems in risk assessment and management of microbial products, quarantine legislations, international treaties, the importance of public risk perception and risk reducti
Download or read book Linking Research to Crop Production written by Richard C. Staples and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1941, The Rockefeller Foundation sent a team of three American agricultural scientists to Mexico to survey the pros pects for increasing grain production there. The nature of the program that was subsequently established by the Ford and Rockefeller Foundations has had a large influence upon the evolu tion of agricultural research for the developing countries, and the project grew into what is now called the Green Revolution. The Green Revolution has been vastly successful because there was abundant research and technology available to draw upon. Now the Green Revolution has evolved into a very complex program of development; the momentum has slowed; and it appears that the time has come to reconstruct the research base which underlies the cropping systems for the third world. What are some of the problems that we face? The expanding world population is taking up more living space just when land is urgently needed to feed the 6.3 billion persons projected for the year 2000. The causes of the population problem are deeply imprinted in the social pattern of most countries, and certainly there are no simple solutions in a nation unwilling to restrain population growth. The problem of population growth, and others like it, is very much a sociological problem.
Download or read book Biological Control of Tropical Weeds Using Arthropods written by Rangaswamy Muniappan and published by Cambridge University Press. This book was released on 2009-03-05 with total page 509 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses the biological control of weeds using arthropods, providing ecological management models for use across the tropical world.
Download or read book Bulletin of Entomological Research written by Commonwealth Institute of Entomology and published by . This book was released on 1853 with total page 860 pages. Available in PDF, EPUB and Kindle. Book excerpt:
