Proceedings of the ... National Weeds Conference of South Africa PDF Download

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 196

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Author:
Publisher:
ISBN:
Category : Environmental monitoring
Languages : en
Pages : 140

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Author: National Weeds Conference of South Africa
Publisher: Ashgate Publishing
ISBN:
Category : Weeds
Languages : en
Pages : 370

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Book Description
An analysis of the Cape flora; The Cape Floral Kingdom: an ecological view; The threat posed by alien weeds to the Cape flora; Progress with research on Nassella Tussock; Invasive woody plants in the Cape fynbos, with special reference in the biology and control of Pinus pinaster; Natural enemies or certain acacias in Australia; Problem plants in states forests; A case against controlling introduced acacias; Integrated control of wild oat by chemical and cultural means; Tolerance of grape vines to herbicides; Chemical weed control in maize and wheat: some recent research results; The chemical control of problem grasses in mixed clover pastures in the Western Province; The use of herbicides in the South African sugar-cane industry; Chemical control of bush encroachment by means of aerial spraying; On the chemical control of Nassela Tussock in the Eastern Cape Province; Development of chemical weed control in the industrial field in South Africa; A sampling system for field infestations of jointed cactus, Opuntia aurantiaca Lindley; The Salvinia molesta problem in the northern Botswana and Eastern Caprivi area; The application of growth kinetics for the control of Eichhornia crassipes and Salvinia molesta through nutrient removal; Factors affecting the growth and development of Azolla filiculoides Lam; The origin and relationships of Opuntia aurantiaca Lindley; Artificial dispersal of the cochineal insects, Dactylopius austrinus De Lotto, in infestations of jointed cactus, Opuntia aurantiaca Lindley; The pyralid moth, Tucumania tapiacola Dyar (Lepidoptera), impoirted into South Africa from Argentina for jointed cactus control; On the biological control of some Cape pest plants; Some thoughts on the Polyploid complex Lantana camara L. (Verbenaceae); On the biological control of Lantna camara in South Africa.

Author: M. Mason
Publisher: Routledge
ISBN: 9780869611395
Category : Science
Languages : en
Pages : 192

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Author: Food and Agriculture Organization of the United Nations
Publisher: Food & Agriculture Org.
ISBN: 9789251013359
Category : Gardening
Languages : en
Pages : 202

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Author: British Library. Lending Division
Publisher:
ISBN:
Category : Congresses and conventions
Languages : en
Pages : 456

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Author: Thammineni Pullaiah
Publisher: John Wiley & Sons
ISBN: 1119607035
Category : Technology & Engineering
Languages : en
Pages : 1488

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INVASIVE ALIEN SPECIES Invasive Alien Species: Observations and Issues from Around the World Volume 1: Issues and Invasions in Africa Invasive alien species are spreading into new ecosystems each year. The impacts caused by these invaders can be swift and devastating. The topic of invasive alien species is large, complex, and globally significant at various scales, exacerbated by the globalization of world economies and increased trade and commerce that has overcome natural barriers to species movement. Invasive alien species threaten global food supplies, water quality and availability, and energy production and delivery. With the added risks associated with global climate change, the global homogenization of plants, animals, and microbes is a major factor in the decline in ecosystem health and ecosystem services worldwide. To counter this trend, there is a critical need to unify governments, cultures, and programs to improve cross-boundary coordination to effectively address the wide range of invasive alien species threats to the environment, economies, and to plant and animal health; particularly human health. This 4-volume work is the first to compile a set of useful material for key topics, to provide a better understanding of the overall global threat of invasive alien species and the diverse array of problems faced around the world, and assemble material that includes potential replicable solutions to overcome these threats. The books also highlight the threat posed by invasive alien species in terms of a global ‘call to action’. Since invasive species know no boundaries, it is our hope that by compiling material from different scientific and social perspectives around the world, and sharing knowledge and examples of a diverse array of associated topics, we can advance global awareness and improve unified national responses to the threat posed by invasive alien species.

Author: I. A. W. Macdonald
Publisher: Oxford University Press, USA
ISBN:
Category : Business & Economics
Languages : en
Pages : 340

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Based on a symposium held by the South African National Programme for Ecosystem Research, this book has been compiled in response to the increasing realization worldwide, but notably in South Africa, that introduced species pose a true ecological and economic threat to agricultural and conservation activities. The authors review current knowledge and management practice in response to the invasive spread of introduced species in South Africa, and focus on the study of species which have invaded non-agricultural regions, thereby disrupting natural ecosystem processes. The ecological processes involved are described, as are basic principles of management of invasive species in protected ecosystems and grazing lands. Using case studies to demonstrate timing location rate, extent of spread, mode and motivation of introduction, impact, and control strategies for a variety of South African species, this unique work offers helpful guidelines for management and ecological understanding that can be applied internationally.

Author:
Publisher:
ISBN:
Category : National parks and reserves
Languages : en
Pages : 140

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Author: W. Holzner
Publisher: Springer Science & Business Media
ISBN: 9401709165
Category : Science
Languages : en
Pages : 446

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Weeds are a fascinating study for specialists, not only because of their economic importance, but also since in this case biology must be combined with history and agriculture (and its economic aspects). Thus, weed scientists may be concerned with pure basic research, concentrating on general aspects, or with applied science, i.e. having a practical orientation. One of the aims of this book is to create a synthesis between these two branches of study and to review the literature of both fields. The agrestals, the weeds of arable land ~ the most important group from an economic point of view ~ was chasen as the main topic. Other weed groups could only be mentioned briefly (e.g. grassland weeds), or superficially (e.g. aquatic weeds), or had to be omitted completely (e.g. ruderals, because they are so heterogeneous), to keep this volume to an acceptable size and price. Nevertheless, nearly all subsections of botanical science have been treated.