Author : Marvin E. Jensen
Publisher :
Page : 32 pages
File Size : 45,71 MB
Release : 1965
Category : Evapotranspiration
ISBN :
Author : Intergovernmental Panel on Climate Change / Working Group Technical Support Unit
Publisher :
Page : 200 pages
File Size : 50,78 MB
Release : 2008
Category : Climatic changes
ISBN : 9789291691234
The Technical Paper addresses the issue of freshwater. Sealevel rise is dealt with only insofar as it can lead to impacts on freshwater in coastal areas and beyond. Climate, freshwater, biophysical and socio-economic systems are interconnected in complex ways. Hence, a change in any one of these can induce a change in any other. Freshwater-related issues are critical in determining key regional and sectoral vulnerabilities. Therefore, the relationship between climate change and freshwater resources is of primary concern to human society and also has implications for all living species. -- page vii.
Author : Surajit K. De Datta
Publisher : Int. Rice Res. Inst.
Page : 642 pages
File Size : 49,99 MB
Release : 1981
Category : Rice
ISBN : 0471097608
Author : Frank M. D'Itri
Publisher : Springer
Page : 414 pages
File Size : 29,47 MB
Release : 1985-10
Category : Nature
ISBN :
Author : Hans Ruthenberg
Publisher :
Page : 412 pages
File Size : 30,98 MB
Release : 1976
Category : Technology & Engineering
ISBN :
Some general charscteristics of farming in a tropical environment; Shifting cultivation systems; Fallow systems; Ley systems; Systems with permanent upland cultivation; Systems with arable irrigation farming; Systems with perennial crops; Grazing systems; General tendences in the development of tropical farm systems.
Author : National Research Council
Publisher : National Academies Press
Page : 456 pages
File Size : 41,11 MB
Release : 1991-02-01
Category : Technology & Engineering
ISBN : 0309045789
Interest is growing in sustainable agriculture, which involves the use of productive and profitable farming practices that take advantage of natural biological processes to conserve resources, reduce inputs, protect the environment, and enhance public health. Continuing research is helping to demonstrate the ways that many factorsâ€"economics, biology, policy, and traditionâ€"interact in sustainable agriculture systems. This book contains the proceedings of a workshop on the findings of a broad range of research projects funded by the U.S. Department of Agriculture. The areas of study, such as integrated pest management, alternative cropping and tillage systems, and comparisons with more conventional approaches, are essential to developing and adopting profitable and sustainable farming systems.
Author : Meredith Giordano
Publisher : IWA Publishing
Page : 289 pages
File Size : 13,20 MB
Release : 2007-01-01
Category : Science
ISBN : 1843391120
This volume is an analytical summary and a critical synthesis of research at the International Water Management Institute over the past decade under its evolving research paradigm known popularly as 'more crop per drop'. The research synthesized here covers the full range of issues falling in the larger canvas of water-food-health-environment interface. Besides its immediate role in sharing knowledge with the research, donor, and policy communities, this volume also has a larger purpose of promoting a new way of looking at the water issues within the broader development context of food, livelihood, health and environmental challenges. More crop per drop: Revisiting a research paradigm contrasts the acquired wisdom and fresh thinking on some of the most challenging water issues of our times. It describes new tools, approaches, and methodologies and also illustrates them with practical application both from a global perspective and within the local and regional contexts of Asia and Africa. Since this volume brings together all major research works of IWMI, including an almost exhaustive list of citations, in one single set of pages, it is very valuable not only as a reference material for researchers and students but also as a policy tool for decision-makers and development agencies.
Author : B. Chandrasekaran
Publisher : New Age International
Page : 0 pages
File Size : 46,1 MB
Release : 2010
Category : Agronomy
ISBN : 9788122427431
Author : A.E. Hall
Publisher : Springer Science & Business Media
Page : 357 pages
File Size : 11,71 MB
Release : 2012-12-06
Category : Science
ISBN : 3642673287
The semi-arid zones of the world are fragile ecosystems which are being sub stantially modified by the activities of mankind. Increasing human populations have resulted in greater demands on semi-arid zones for providing human susten ance and the possibility that this may enhance desertification is a grave concern. These zones are harsh habitats for humans. The famines that resulted from drought during the late 1960's and the 1970's in the African Sahel illustrated the unreliability of present agricultural systems in this zone. Large fluctuations in ag ricultural production have occurred in semi-arid zones of Australia, North Ameri ca, and the Soviet Union due to periodic droughts, even though considerable ag ricultural technology has been devoted to agricultural development in these zones. The challenge to mankind is to manage these different semi-arid zones so that pro ductivity is increased and stabilized, and environmental deterioration is decreased. Irrigation can be used to increase and stabilize agricultural production in semi-arid zones as discussed in Volume 5 of this series, Arid Zone Irrigation. The present volume, Agriculture in Semi-Arid Environments, focuses on dryland farming in semi-arid zones, and is relevant to the large areas of the world where rainfall is limiting and where water is not available for irrigation. This volume is designed to assist agricultural development in these areas and consists of reviews and analyses of available information by scientists working in Africa, Australia, and at the U ni versity of California.
Author : Ted L. Willrich
Publisher :
Page : 452 pages
File Size : 32,9 MB
Release : 1971
Category : Agriculture
ISBN :
SEDIMENT AS A WATER POLLUTANT; PLANT NUTRIENTS AS WATER POLLUTANTS; PESTICIDES AS WATER POLLUTANTS; ANIMAL WASTES AS WATER POLLUTANTS; AGRICULTURAL POLLUTION IMPLICATIONS; AGRICULTURE'S INVOLVEMENT IN POLLUTED AND CLEAN WATER.
