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Valuing nutrients in soil and water: Concepts and techniques with examples from IWMI studies in the developing world

2004
Valuing nutrients in soil and water: Concepts and techniques with examples from IWMI studies in the developing world

Author: Drechsel, Pay, Giordano, Mark, Gyiele, Lucy

Publisher:

ISBN: 9290905700

Category: Soil fertility

Page: 33

View: 826

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Despite the importance of nutrient-water interactions, they are often ignored in analysis. After discussing the interrelationships between soil nutrients and water and reviewing methods for determining nutrient balances, this report describes an array of available methods for soil nutrient valuation and provides a discussion of four nutrient valuation studies, which together cover a range of scales, perspectives, and geographic contexts. It also includes case studies from Ghana, Mexico, sub-Saharan Africa, and an examination of possible approaches to valuing soil organic matter and its various functions--an often ignored area in literature.

Economic Valuation of Wastewater

2016-02-26
Economic Valuation of Wastewater

Author: United Nations Environment Programme (UNEP)

Publisher: United Nations

ISBN: 9789210602280

Category: Political Science

Page: 68

View: 916

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This book presents the results of an analytical study on the economic valuation for wastewater, comparing the cost of no action versus the cost of effective wastewater management. Although economic valuation of wastewater management is complex, it remains an important tool to guide policymakers and investors to take informed decisions. A financial analysis of wastewater management looks at its private costs and benefits and can underpin decision making from a business or treatment plant operator standpoint.

More Crop Per Drop

2007-01-01
More Crop Per Drop

Author: Meredith Giordano

Publisher: IWA Publishing

ISBN: 9781843391128

Category: Science

Page: 289

View: 470

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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.

Soil Remediation and Plants

2014-08-29
Soil Remediation and Plants

Author: Khalid Hakeem

Publisher: Academic Press

ISBN: 9780127999135

Category: Technology & Engineering

Page: 752

View: 931

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The soil is being contaminated continuously by a large number of pollutants. Among them, heavy metals are an exclusive group of toxicants because they are stable and difficult to disseminate into non-toxic forms. The ever-increasing concentrations of such pollutants in the soil are considered serious threats toward everyone’s health and the environment. Many techniques are used to clean, eliminate, obliterate or sequester these hazardous pollutants from the soil. However, these techniques can be costly, labor intensive, and often disquieting. Phytoremediation is a simple, cost effective, environmental friendly and fast-emerging new technology for eliminating toxic heavy metals and other related soil pollutants. Soil Remediation and Plants provides a common platform for biologists, agricultural engineers, environmental scientists, and chemists, working with a common aim of finding sustainable solutions to various environmental issues. The book provides an overview of ecosystem approaches and phytotechnologies and their cumulative significance in relation to solving various environmental problems. Identifies the molecular mechanisms through which plants are able to remediate pollutants from the soil Examines the challenges and possibilities towards the various phytoremediation candidates Includes the latest research and ongoing progress in phytoremediation

Wastewater

2015-03-11
Wastewater

Author: Pay Drechsel

Publisher: Springer

ISBN: 9789401795456

Category: Technology & Engineering

Page: 282

View: 844

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The books provides a timely analysis in support of a paradigm shift in the field of wastewater management, from ‘treatment for disposal’ to ‘treatment for reuse’ by offering a variety of value propositions for water, nutrient and energy recovery which can support cost savings, cost recovery, and profits, in a sector that traditionally relies on public funding. The book provides new insights into the economics of wastewater use, applicable to developed and developing countries striving to transform wastewater from an unpleasant liability to a valuable asset and recasting urbanization from a daunting challenge into a resource recovery opportunity. “It requires business thinking to transform septage and sewage into valuable products. A must read for water scholars, policy makers, practitioners, and entrepreneurs". Guy Hutton, Senior Economist, Water and Sanitation Program, Water Global Practice, World Bank “This book provides compelling evidence and real solutions for the new ‘resource from waste’ approach that is transforming sanitation, boosting livelihoods, and strengthening urban resilience”. Christopher Scott, Professor and Distinguished Scholar, University of Arizona “This book shows how innovative business thinking and partnerships around resource recovery and reuse fit well within an inclusive green economy and climate change adaptation and mitigation strategies”. Akiça Bahri, Coordinator of the African Water Facility, Tunisia, and award-winning researcher

Nutrient Use Efficiency: from Basics to Advances

2014-12-26
Nutrient Use Efficiency: from Basics to Advances

Author: Amitava Rakshit

Publisher: Springer

ISBN: 9788132221692

Category: Technology & Engineering

Page: 417

View: 269

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This book addresses in detail multifaceted approaches to boosting nutrient use efficiency (NUE) that are modified by plant interactions with environmental variables and combine physiological, microbial, biotechnological and agronomic aspects. Conveying an in-depth understanding of the topic will spark the development of new cultivars and strains to induce NUE, coupled with best management practices that will immensely benefit agricultural systems, safeguarding their soil, water, and air quality. Written by recognized experts in the field, the book is intended to provide students, scientists and policymakers with essential insights into holistic approaches to NUE, as well as an overview of some successful case studies. In the present understanding of agriculture, NUE represents a question of process optimization in response to the increasing fragility of our natural resources base and threats to food grain security across the globe. Further improving nutrient use efficiency is a prerequisite to reducing production costs, expanding crop acreage into non-competitive marginal lands with low nutrient resources, and preventing environmental contamination. The nutrients most commonly limiting plant growth are N, P, K, S and micronutrients like Fe, Zn, B and Mo. NUE depends on the ability to efficiently take up the nutrient from the soil, but also on transport, storage, mobilization, usage within the plant and the environment. A number of approaches can help us to understand NUE as a whole. One involves adopting best crop management practices that take into account root-induced rhizosphere processes, which play a pivotal role in controlling nutrient dynamics in the soil-plant-atmosphere continuum. New technologies, from basic tools like leaf color charts to sophisticated sensor-based systems and laser land leveling, can reduce the dependency on laboratory assistance and manual labor. Another approach concerns the development of crop plants through genetic manipulations that allow them to take up and assimilate nutrients more efficiently, as well as identifying processes of plant responses to nutrient deficiency stress and exploring natural genetic variation. Though only recently introduced, the ability of microbial inoculants to induce NUE is gaining in importance, as the loss, immobilization, release and availability of nutrients are mediated by soil microbial processes.

Rainfed Agriculture

2009-01-01
Rainfed Agriculture

Author: Suhas Pralhad Wani

Publisher: CABI

ISBN: 9781845933890

Category: Technology & Engineering

Page: 326

View: 775

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This book, which contains 14 chapters, covers all aspects of rainfed agriculture, starting with its potential, current status, rainwater harvesting and supplementary irrigation, to policies, approaches, institutions for upscaling, and impacts of integrated water management programmes in rainfed areas.

Improving the Profitability, Sustainability and Efficiency of Nutrients Through Site Specific Fertilizer Recommendations in West Africa Agro-Ecosystems

2018-04-03
Improving the Profitability, Sustainability and Efficiency of Nutrients Through Site Specific Fertilizer Recommendations in West Africa Agro-Ecosystems

Author: Andre Bationo

Publisher: Springer

ISBN: 9783319587929

Category: Technology & Engineering

Page: 313

View: 179

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As part of its efforts to improve fertilizer use and efficiency in West Africa, and following the recent adoption of the West African fertilizer recommendation action plan (RAP) by ECOWAS, this volume focuses on IFDC's technical lead with key partner institutions and experts to build on previous and current fertilizer recommendations for various crops and countries in West Africa for wider uptake by public policy makers and fertilizer industry actors.

Environmental Scenario in India

2013-06-17
Environmental Scenario in India

Author: Sacchidananda Mukherjee

Publisher: Routledge

ISBN: 9781136488658

Category: Business & Economics

Page: 320

View: 328

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India has moved along an impressive growth path over the last decade, marked with falling share of agriculture, stagnating manufacturing, expanding services segment, growing trade orientation, enhanced FDI inflows etc. The consequent growth implications are obvious as far as the numbers like GDP growth rate and Per Capita GDP trend are concerned, but how sustainable the associated development is with respect to resource management and environmental governance? This book captures the economy-wide impacts of various activities on environment in India. The environmental impacts on water, air, soil quality and human health are captured through case studies from different parts of India. Analyzing separately the concern areas within agriculture (cultivation, aquaculture), manufacturing (industrial pollution, power generation), services (waste management, bio-medical waste, e-waste recycling) and external sector (agricultural trade, FDI inflow, trade in waste products) performance of India, the book attempts to find an answer to that crucial question. The methodology adopted to capture the environmental impacts of various economic activities is derived from the relevant branches like environmental economics, agricultural economics, and water resources economics. The book, focusing on particular sectors, indicates the concern areas and possible ways for enhancing environmental governance.