Report of the Anti-Locust Research Centre
Author : Anti-Locust Research Centre (Great Britain)
Publisher :
Page : 458 pages
File Size : 19,19 MB
Release : 1961
Category : Locusts
ISBN :
Author : Anti-Locust Research Centre (Great Britain)
Publisher :
Page : 458 pages
File Size : 19,19 MB
Release : 1961
Category : Locusts
ISBN :
Author :
Publisher :
Page : 86 pages
File Size : 19,91 MB
Release : 1972
Category : Locust
ISBN :
Author : S. Krall
Publisher : Birkhäuser
Page : 487 pages
File Size : 12,27 MB
Release : 2012-12-06
Category : Technology & Engineering
ISBN : 3034892020
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 : A. Harz
Publisher : Springer Science & Business Media
Page : 430 pages
File Size : 18,37 MB
Release : 2013-04-17
Category : Science
ISBN : 9401725136
Author :
Publisher :
Page : 814 pages
File Size : 17,64 MB
Release : 1969
Category : Commonwealth countries
ISBN :
Author : Gufu Oba
Publisher : Routledge
Page : 292 pages
File Size : 39,81 MB
Release : 2020-03-13
Category : Social Science
ISBN : 1000055892
This book explores how and why the idea of the African environmental crisis developed and persisted through colonial and post-colonial periods, and why it has been so influential in development discourse. From the beginnings of imperial administration, the idea of the desiccation of African environments grew in popularity, but this crisis discourse was dominated by the imposition of imperial scientific knowledge, neglecting indigenous knowledge and experience. African Environmental Crisis provides a synthesis of more than one-and-a-half century’s research on peasant agriculture and pastoral rangeland development in terms of soil erosion control, animal husbandry, grazing schemes, large-scale agricultural schemes, social and administrative science research, and vector-disease and pest controls. Drawing on comparative socio-ecological perspectives of African peoples across the East African colonies and post-independent states, this book refutes the hypothesis that African peoples were responsible for environmental degradation. Instead, Gufu Oba argues that flawed imperial assumptions and short-term research projects generated an inaccurate view of the environment in Africa. This book’s discussion of the history of science for development provides researchers across environmental studies, agronomy, African history and development studies with a lens through which to understand the underlying assumptions behind development projects in Africa.
Author :
Publisher :
Page : 888 pages
File Size : 47,75 MB
Release : 1949
Category : Agriculture
ISBN :
Author : V. Alistair Drake
Publisher : Cambridge University Press
Page : 504 pages
File Size : 44,3 MB
Release : 1995-09-14
Category : Science
ISBN : 0521440009
A comprehensive account of insect migration in its ecological and evolutionary context.
Author : V. Alistair Drake
Publisher : CABI
Page : 489 pages
File Size : 35,32 MB
Release : 2012
Category : Entomology
ISBN : 9781845936068
Many of the world's most serious agricultural pests are highly migratory. Through the use of special-purpose radars we are provided with insights into their movement and how they learn about and navigate through their environment. This text examines the behaviour and regional variations of these species, as well as the altitude of migration, concentration of insects in layers and how they respond to large and small-scale wind systems. The book relates radar observation of insect movement to complementary and competing methodologies and surveys its capabilities and limitations. It also deals wi
Author :
Publisher :
Page : 620 pages
File Size : 14,69 MB
Release : 1958
Category : Agriculture
ISBN :