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Author: Christopher Scott
Publisher: Cabi
ISBN: 9781845934514
Category : Technology & Engineering
Languages : en
Pages : 0
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Book Description
The use of urban wastewater in agriculture is receiving renewed attention, with the increasing scarcity of fresh water resources in many arid and semi-arid regions of the world. Wastewater is a low-cost alternative to conventional irrigation water, although it may carry health and environmental risks. This book critically reviews experience worldwide of these issues. Emphasis is placed on untreated wastewater use by means of field-based case studies from Asia, Africa, the Middle East and Latin America. It brings together a range of perspectives including economic, health, agronomic, environmental, institutional, and policy dimensions.
Author: Christopher Scott
Publisher: Cabi
ISBN: 9781845934514
Category : Technology & Engineering
Languages : en
Pages : 0
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Book Description
The use of urban wastewater in agriculture is receiving renewed attention, with the increasing scarcity of fresh water resources in many arid and semi-arid regions of the world. Wastewater is a low-cost alternative to conventional irrigation water, although it may carry health and environmental risks. This book critically reviews experience worldwide of these issues. Emphasis is placed on untreated wastewater use by means of field-based case studies from Asia, Africa, the Middle East and Latin America. It brings together a range of perspectives including economic, health, agronomic, environmental, institutional, and policy dimensions.
Author: Marinus G. Bos
Publisher: Springer Science & Business Media
ISBN: 1402089481
Category : Technology & Engineering
Languages : en
Pages : 186
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Book Description
Irrigated agriculture produces about 40% of all food and fibre on about 16% of all cropped land. As such, irrigated agriculture is a productive user of resources; both in terms of yield per cropped area and in yield per volume of water consumed. Many irrigation projects, however, use (divert or withdraw) much more water than consumed by the crop. The non-consumed fraction of the water may cause a variety of undesirable effects ranging from water-logging and salinity within the irrigated area to downstram water pollution. This book discusses all components of the water balance of an irrigated area; evapotranspiration (Ch.2), effective precipitation (Ch.3) and capillary rise from the groundwater table (Ch.4). Chapter 5 then combines all components into a water management strategy that balances actual evapotranspiration (and thus crop yield) with the groundwater balance of the irrigated area (for a substainable environment). Chapter 6 presents CRIWAR 3.0, a simulation program that combines all water balance components into a single simulation procedure. The chapter describes the use of the CRIWAR software for developing water requirement tables and other useful information based on the selected water management strategy. This version greatly expands upon the capabilities of previously published programs.
Author: Mateo-Sagasta, Javier
Publisher: Rome, Italy: FAO Colombo, Sri Lanka: International Water Management Institute (IWMI). CGIAR Research Program on Water, Land and Ecosystems (WLE).
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 35
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Book Description
Author: Claudio Rodriguez Barrueco
Publisher: Springer Science & Business Media
ISBN: 9400915861
Category : Technology & Engineering
Languages : en
Pages : 539
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Book Description
Food production remains the highest agricultural priority, subject to the constraint that it be done in harmony with nature, or at least with minimum environmental pollution. The amount of fertilizer applied can be controlled using modern application techniques, including soil and crop management, guaranteeing higher economic profit and lower environmental cost. It is in such a context that the present book addresses the efficient and rational use of mineral and organic fertilizers while preserving environmental quality. The book discusses the impact on surface and groundwaters, soils and crops, and experience of nitrate leaching, denitrification, ammonia volatilization, heavy metal pollution, agricultural and urban waste management, and international and national legislation. Audience: Agronomists, environmentalists, soil and food chemists, ecologists, policy makers, and managers in the fertilizer industry concerned with the trend of public opinion.
Author: Hiroshan Hettiarachchi
Publisher: Springer
ISBN: 331974268X
Category : Technology & Engineering
Languages : en
Pages : 182
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Book Description
This book offers a broad and global level description of the current status of wastewater use in agriculture and then brings the readers to various places in the MENA Region and Europe to explain how some countries and regions have addressed the challenges during implementation. On a global scale, over 20 million hectares of agricultural land are irrigated using wastewater. This is one good, and perhaps the most prominent, example of the safe use potential of wastewater. Water scarcity and the cost of energy and fertilisers are among the main factors driving millions of farmers and other entrepreneurs to make use of wastewater. In order to address the technical, institutional, and policy challenges of safe water reuse, developing countries and countries in transition need clear institutional arrangements and more skilled human resources, with a sound understanding of the opportunities and potential risks of wastewater use. Stakeholders in wastewater irrigation who need to implement from scratch or improve current conditions, find it difficult to gather the necessary information on practical implementation aspects. The main objective of this book is to bridge that gap.
Author: Food and Agriculture Organization of the United Nations
Publisher: Food & Agriculture Org.
ISBN: 9251305056
Category : Technology & Engineering
Languages : en
Pages : 156
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Book Description
This document presents key messages and the state-of-the-art of soil pollution, its implications on food safety and human health. It aims to set the basis for further discussion during the forthcoming Global Symposium on Soil Pollution (GSOP18), to be held at FAO HQ from May 2nd to 4th 2018. The publication has been reviewed by the Intergovernmental Technical Panel on Soil (ITPS) and contributing authors. It addresses scientific evidences on soil pollution and highlights the need to assess the extent of soil pollution globally in order to achieve food safety and sustainable development. This is linked to FAO’s strategic objectives, especially SO1, SO2, SO4 and SO5 because of the crucial role of soils to ensure effective nutrient cycling to produce nutritious and safe food, reduce atmospheric CO2 and N2O concentrations and thus mitigate climate change, develop sustainable soil management practices that enhance agricultural resilience to extreme climate events by reducing soil degradation processes. This document will be a reference material for those interested in learning more about sources and effects of soil pollution.
Author:
Publisher:
ISBN:
Category : Water
Languages : en
Pages : 4
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Book Description
Author: Edwin D. Ongley
Publisher: Daya Books
ISBN: 9788170353973
Category : Science
Languages : en
Pages : 120
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Book Description
Agricultural operations can contribute to water quality deterioration through the release of several materials into water: sediments, pesticides, animal manure, fertilizers and other sources of inorganic and organic matter. This guidelines document on control and management of agricultural water pollution aims to delineate the nature and consequences of agricultural impacts on water quality, and to provide a framework for practical measures to be undertaken by relevant professionals and decision-makers to control water pollution. Contents Chapter 1: Introduction to Agricultural Water Pollution; Water quality as a global issue, Non-point source pollution defined, Classes of non-point sources, Scope of the problem, Agricultural impacts on water quality, Types of impacts, Irrigation impacts on surface water quality, Public health impacts, Data on agricultural water pollution in developing countries, Types of decisions in agriculture for non-point source pollution control, The data problem; Chapter 2: Pollution by Sediments; Sediment as a physical pollutant, Sediment as a chemical pollutant, Key processes: precipitation and runoff, Key concepts, Sediment delivery ratio, Sediment enrichment ratio, Measurement and prediction of sediment loss, Prediction models, Sediment yield, Scale problems, Recommendations; Chapter 3: Fertilizers as Water Pollutants; Eutrophication of surface water, Role of agriculture in eutrophication, Organic fertilizers, Environmental chemistry, The point versus non-point source dilemma, Management of water quality impacts from fertilizers, Mineral fertilizers, Organic fertilizers, Sludge management, Economics of control of fertilizer runoff, Aquaculture, Problems of restoration of eutrophic lakes; Chapter 4: Pesticides as Water pollutants; Historical development of pesticides, North-south dilemma over pesticide economics, Fate and effects of pesticides, Factors affecting pesticide toxicity in aquatic systems, Human health effects of pesticides, Ecological effects of pesticides, Natural factors that degrade pesticides, Pesticide monitoring in surface water, Pesticide management and control, The european experience, Pesticide registration, The danish example, Pesticides and water quality in the developing countries; Chapter 5: Summary and Recommendations; Necessity to internalize costs at the farm level, Integrated national water quality management, Assessment methodology, Environmental capacity, The data problem in water quality, Water quality indices for application to agricultural water quality issues, Economic analysis of cost of water pollution attributed to agriculture, Information technology and decision making, Use of water quality objectives, FAO and the POPs agenda, Pesticides in developing countries.
Author: Pay Drechsel
Publisher: Earthscan
ISBN: 1849774668
Category : Business & Economics
Languages : en
Pages : 433
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Book Description
This book represents the best modern innovative thinking on the topic and symbolizes an important turning point in the history of wastewater use in irrigation as a major contributor to water and nutrient conservation, public health and welfare. û Hillel S.
Author: Ronald E. Hester
Publisher: Royal Society of Chemistry
ISBN: 1849733856
Category : Nature
Languages : en
Pages : 193
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Book Description
This volume examines the factors currently affecting agriculture on a global scale. Land use, soil quality, and the inherent production of greenhouse gasses by agriculture each receive their own chapters.
