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Author: A. M. Michael
Publisher:
ISBN:
Category : Irrigation
Languages : en
Pages : 801
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Book Description
Author: A. M. Michael
Publisher:
ISBN:
Category : Irrigation
Languages : en
Pages : 801
Get Book Here
Book Description
Author: Michael Raviv
Publisher: Elsevier
ISBN: 0080556426
Category : Science
Languages : en
Pages : 625
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Book Description
Plant production in hydroponics and soilless culture is rapidly expanding throughout the world, raising a great interest in the scientific community. For the first time in an authoritative reference book, authors cover both theoretical and practical aspects of hydroponics (growing plants without the use of soil). This reference book covers the state-of-the-art in this area, while offering a clear view of supplying plants with nutrients other than soil. Soilless Culture provides the reader with an understanding of the properties of the various soiless media and how these properties affect plant performance in relation to basic horticultural operations, such as irrigation and fertilization. This book is ideal for agronomists, horticulturalists, greenhouse and nursery managers, extension specialists, and people involved with the production of plants.* Comprehensive discussion of hydroponic systems, irrigation, and control measures allows readers to achieve optimal performance* State-of-the-art book on all theoretical aspects of hydroponics and soilless culture including a thorough description of the root system, its functions and limitation posed by restricted root volume* Critical and updated reviews of current analytical methods and how to translate their results to irrigation and fertilization practices * Definitive chapters on recycled, no-discharge systems including salinity and nutrition management and pathogen eradication * Up-to-date description of all important types of growing media
Author: Wynn R. Walker
Publisher: Prentice Hall
ISBN: 9780138779290
Category : Irrigation engineering.
Languages : en
Pages : 386
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Book Description
The practice of irrigation; The irrigation requirement; Surface irrigation systems; Field measurement techniques; Evaluation of the system; Volume balance field design; Land leveling; Operation of surface irrigation systems; Surge flow surface irrigation; Headland facilities; Fundamentals of surface irrigation hydraulics; The hydrodynamic model: characteristic approach; The hydrodynamic model: eulerian integration;The zero-inertia model; The kinematic-wave model; The volume balance model.
Author: Martin Burton
Publisher: CABI
ISBN: 1845935160
Category : Technology & Engineering
Languages : en
Pages : 385
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Book Description
In many countries irrigated agriculture consumes a large proportion of the available water resources, often over 70% of the total. There is considerable pressure to release water for other uses and, as a sector, irrigated agriculture will have to increase the efficiency and productivity of its water use. This is particularly true for manually operated irrigation systems managed by government agencies, which provide water for a large number of users on small landholdings and represent 60% of the total irrigated area worldwide. Drawing on the author's 30 years of experience in some 28 countries, this book offers knowledge of the management of irrigation and drainage systems, including traditional technical areas of systems operation and maintenance, and expanding managerial, institutional and organizational aspects. Chapters provide guidelines to improve management, operation and maintenance processes, which move management thinking out of traditional public-sector mindsets to a more customer-focused, performance-oriented service delivery. As a practical guide to improve efficiency and productivity in irrigated agriculture, this book will be essential reading for irrigation managers and technicians as well as students and policy makers in water management, agriculture and sustainable development.
Author: Adrian Laycock
Publisher: CABI
ISBN: 1845938747
Category : Technology & Engineering
Languages : en
Pages : 315
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Book Description
Of all the confrontations man has engineered with nature, irrigation systems have had the most widespread and far-reaching impact on the natural environment. Over a quarter of a billion hectares of the planet are irrigated and entire countries depend on irrigation for their survival and existence. Considering the importance of irrigation schemes, it is unfortunate that until recently the technology and principles of design applied to their construction has hardly changed in 4,000 years. Modern thinking on irrigation engineering has benefited from a cross-fertilization of ideas from many other fields including social sciences, control theory, political economics and agriculture. However, these influences have been largely ignored by irrigation engineers. Drawing on almost 40 years of experience of irrigation in the developing world, Laycock introduces new ideas on the design of irrigation systems and combines important issues from the disciplines of social conflict, management, and political thinking.
Author: A M Michael
Publisher: Vikas Publishing House
ISBN: 9788125918677
Category : Technology & Engineering
Languages : en
Pages : 782
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Book Description
It is a comprehensive treatise on Water Resources Development and Irrigation Management. For the last 30 years the book has enjoyed the status of an definitive textbook on the subject. It has now been thoroughly revised and updated, and thus substantially enlarged. In addition to the wholesale revision of the existing chapters, three new chapters have been added to the book, namely, Lift Irrigation Systems and their Design, Water Requirement of Crops and Irrigation Management, and Economic Evaluation of Irrigation Projects and Water Pricing Policy.
Author: Emery Roe
Publisher: Duke University Press
ISBN: 9780822315131
Category : Education
Languages : en
Pages : 220
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Book Description
Narrative Policy Analysis presents a powerful and original application of contemporary literary theory and policy analysis to many of today’s most urgent public policy issues. Emery Roe demonstrates across a wide array of case studies that structuralist and poststructuralist theories of narrative are exceptionally useful in evaluating difficult policy problems, understanding their implications, and in making effective policy recommendations. Assuming no prior knowledge of literary theory, Roe introduces the theoretical concepts and terminology from literary analysis through an examination of the budget crises of national governments. With a focus on several particularly intractable issues in the areas of the environment, science, and technology, he then develops the methodology of narrative policy analysis by showing how conflicting policy "stories" often tell a more policy-relevant meta-narrative. He shows the advantage of this approach to reading and analyzing stories by examining the ways in which the views of participants unfold and are told in representative case studies involving the California Medfly crisis, toxic irrigation in the San Joaquin Valley, global warming, animal rights, the controversy over the burial remains of Native Americans, and Third World development strategies. Presenting a bold innovation in the interdisciplinary methodology of the policy sciences, Narrative Policy Analysis brings the social sciences and humanities together to better address real-world problems of public policy—particularly those issues characterized by extreme uncertainty, complexity, and polarization—which, if not more effectively managed now, will plague us well into the next century.
Author: François Molle
Publisher: CABI
ISBN: 1845932927
Category : Technology & Engineering
Languages : en
Pages : 367
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Book Description
Much hope has been vested in pricing as a means of helping to regulate and rationalize water management, notably in the irrigation sector. The pricing of water has often been applied universally, using general and ideological policies, and not considering regional environmental and economic differences. Almost 15 years after the emphasis laid at the Dublin and Rio conferences on treating water as an economic good, a comprehensive review of how such policies have helped manage water resources an irrigation use is necessary. The case-studies presented here offer a reassessment of current policies by evaluating their objectives and constraints and often demonstrating their failure by not considering the regional context. They will therefore contribute to avoiding costly and misplaced reforms and help design water policies that are based on a deeper understanding of the factors which eventually dictate their effectiveness.
Author: Sara Finley
Publisher: CABI
ISBN: 1780646860
Category : Technology & Engineering
Languages : en
Pages : 206
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Book Description
Water is critical to all human activities, but access to this crucial resource is increasingly limited by competition and the effects of climate change. In agriculture, water management is key to ensuring good and sustained crop yields, maintaining soil health, and safeguarding the long-term viability of the land. Water management is especially challenging on smallholder farms in resource-poor areas, which tend to be primarily rainfed and thus highly dependent on unreliable rainfall patterns. Sustainable practices can help farmers promote the development of soils, plants and field surfaces to allow maximum retention of water between rains, and encourage the efficient use of each drop of water applied as irrigation. Especially useful for farmers' groups, agricultural extension workers, NGOs, students and researchers working with farmers in dryland areas, this comprehensive yet concise book is a practical and accessible resource for anyone interested in sustainable water management.
Author: S.P. Palaniappan
Publisher: Scientific Publishers
ISBN: 9387869431
Category : Technology & Engineering
Languages : en
Pages : 267
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Book Description
This book makes an attempt to present the available information on organic agriculture in a cogent and easily understandable manner. Though it is not exhaustive, which it is not meant to be, it is felt that book will a give an overview on the subject to the interested reader. A viewpoint on organic agriculture has been presented in the book, based on the experience of the authors. The book contains chapters on organic manures (including green manures), recycling of organic wastes, vermiculture, biofertilizers, organic methods of pest and weed management, integrated nutrient management, farming systems and case studies of organic farming. Selected literature is presented for further reading. A compilation of the available information has been a felt need of students, teachers, research workers and administrators in agriculture.
