Consulta: subjectFacets:"Water conservation"
Registros recuperados: 41
Data/hora: 13/06/2024 07:17:19

Técnicas de mineração de textos para auxiliar a construção de portfólio de tecnologias de irrigação a partir de publicações científicas.
Provedor de dados: 14
Autores: OLIVEIRA, S. R. de M.; MOURA, M. F.; TÁPIAS, L. M.; OLIVEIRA, C. T. de; BASSOI, L. H.
O trabalho aqui descrito é uma experimentação metodológica para a construção de portfólios tecnológicos de modo semi-automatizado. A metodologia envolve recuperação de informação técnico-científica e extração de conhecimento por meio de técnicas estatísticas de aprendizado de máquina para construção de portfólio de tecnologias de irrigação, a partir de publicações científicas, visando melhorar o uso sustentável da água na agricultura
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Mineração de texto; Hierarquia de tópicos; Regras de associação; Manejo e conservação da água; Text mining; Association rules; Recursos hídricos.; Water resources; Water management; Water conservation.
Ano: 2016
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1064158

MATAS de galeria: o caminho para a conservacao da agua no cerrado.
Provedor de dados: 14
bitstream/item/224002/1/Matas-de-Galeria.pdf
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Riparian vegetation; Conservação da Água; Cerrado; Mata Ciliar; Water conservation.
Ano: 1999
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/545533

Analise do desempenho da irrigacao em areas da bacia do Rio Sao Francisco.
Provedor de dados: 14
Autores: RODRIGUES, L. N.; RAMOS, M. M.; PRUSKI, F.; SILVA, D. D.; SILVEIRA, S. F. R.
bitstream/CPAC-2009/24382/1/p2003_29.pdf
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Rio Sao Francisco; Brasil.; Bacia Hidrográfica; Conservação da Água; Irrigação; Manejo de Água; Potencial Hídrico.; Brazil; Irrigation; Water conservation; Water management; Water potential.
Ano: 2004
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/566493

Gestão do uso e conservação de água em sistemas pecuários no Cerrado.
Provedor de dados: 14
Autores: SILVA, M. P. da; MAURO, R. A.; SANTOS, J. C. dos; PIRES, P. P.
A utilização da água nas propriedades rurais deve estar adequada com a "Lei das Águas". O aproveitamento do potencial hídrico das propriedades envolve diratamente às práticas conservacionistas como manutenção da cobertura vegetal nas margens das fontes de água e uso e manejo adequado do solo. Neste trabalho fazemos algumas sugestões para que o proprietário seja aliado na conservação ambiental, tornando-se um "produtor de água".
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Brasil; Husbandry; Legislation; Brazilian savannas.; Conservação da Água; Cerrado; Legislação; Pecuária; Recurso Hídrico.; Brazil; Water conservation; Water resources.
Ano: 2004
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/326117

Memórias do III Seminário e I Workshop da Rede Agrohidro.
Provedor de dados: 14
Autores: RODRIGUES, L. N.; PADOVANI, C. R.; OLIVEIRA, M. D. de; SORIANO, B. M. A.
A Rede AgroHidro foi inicialmente proposta por um grupo de pesquisadores da Embrapa, com o objetivo de estudar água na agricultura e seus desafios nos diferentes Biomas brasileiros. O Pantanal apresenta peculiaridades hidrológicas e desafios de manejo dos recursos hídricos que não são encontrados nos demais biomas. A bacia é composta de duas unidades fisiográficas distintas, o planalto adjacente e a planície inundável do Pantanal, porém com uma relação muito forte de interdependência da planície em relação ao planalto. Em sua versão 2015, o III Seminário e I Workshop da Rede AgroHidro teve como objetivo promover a integração, a troca de informações e as discussões sobre as atividades em andamento no projeto de pesquisa que avalia os impactos da agricultura...
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Sustentabilidade; Recursos hídricos.; Conservação da água; Agricultura.; Water conservation; Sustainable agriculture.
Ano: 2016
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1055048

Barragem subterrânea: alternativa de captação e armazenamento de água de chuva.
Provedor de dados: 14
Autores: MELO, R. F. de; ANJOS, J. B. dos.
Nas condições da agricultura dependente de chuva, a disponibilidade de água no solo para as culturas varia de acordo com a quantidade e frequência das precipitações, da capacidade do solo em absorver água e da profundidade do sistema radicular. Essa disponibilidade pode ser melhorada com o uso de tecnologias de captação de água de chuva, como também aquelas associadas ao manejo adequado do solo e água, uso de práticas conservacionistas como, incorporação de restos vegetais, cobertura do solo, adubação orgânica, adubação verde, entre outras. Estudos realizados pela Embrapa Semiárido, em parceria com outras instituições, têm ressaltado a importância das tecnologias de captação e armazenamento de água de chuva para melhoria da agricultura familiar no...
Tipo: Artigo de divulgação na mídia (INFOTECA-E)
Palavras-chave: Água de chuva; Agricultura dependente de chuva; Barreamento; Captação de água de chuva; Absorção de Água; Água do Solo; Águas Subterrâneas; Manejo de Água; Barragem Subterrânea; Soil water; Soil water deficit; Water conservation; Water reservoirs.
Ano: 2017
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1098685

Introdução: a chuva pode aumentar a disponibilidade hídrica no Semiárido brasileiro.
Provedor de dados: 14
Autores: BRITO, L. T. de L.
O Brasil é um país privilegiado em água doce. Conta com 12% das reservas do planeta 3 e apresenta uma disponibilidade hídrica per capita variando de 1.835 m /hab./ano, na bacia hidrográfica do Atlântico Leste, a 628.938 m /hab./ano, na bacia Amazônica. A Organização das Nações Unidas (ONU) estabelece um mínimo de 1.700 m /hab./ano. Porém, por causa de suas dimensões geográficas e diversidade climática, algumas regiões, a exemplo do Nordeste, sofrem graves problemas de escassez de água, tanto para consumo humano e animal, como para o desenvolvimento socioeconômico. Apesar desta situação, pouco pode se aproveitar do potencial hídrico de quase 100 mil poços tubulares perfurados, pois, em geral, a água é salobra ou salgada, não sendo apropriada para o consumo,...
Tipo: Artigo de divulgação na mídia (INFOTECA-E)
Palavras-chave: Convivência com o semiárido; Politica de Recursos Hídricos; Semiárido; Chuva; Recurso Hídrico; Disponibilidade de Água; Políticas Públicas; Water conservation; Water distribution; Water policy; Water resources.
Ano: 2017
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1099069

Sistema integração lavoura-pecuária-floresta para a região Semiárida.
Provedor de dados: 14
Autores: ZONTA, J. H.; RODRIGUES, J. I. da S.; CAVALCANTE, V. R.; LEITE, R. de M. H.; COSTA, R. F. da.
O sistema Integração Lavoura Pecuária e Floresta (ILPF) é uma estratégia de cultivo que objetiva a produção sustentável, integrando atividades agrícolas, pecuárias e fl orestais na mesma área, em cultivo consorciado, em sucessão ou rotacionado, e busca efeitos sinérgicos entre os componentes do agroecossistema, contemplando a melhoria ambiental, a valorização dos seres humanos e a viabilidade econômica. Em outras palavras, o sistema ILPF consiste na diversifi cação de cultivo, de forma que o produtor consiga, além de melhorar sua renda, conservar o solo e água da propriedade, melhorando suas condições de cultivo ao longo do tempo, e com melhor aproveitamento de água da chuva. Através deste sistema, o produtor, sendo familiar ou empresarial, tem a...
Tipo: Folhetos
Palavras-chave: Sistema de Cultivo; Integração; Lavoura; Pecuária; Floresta; Conservação da Água; Conservação do Solo; Algodão; Milho; Soja; Gergelim; Feijão; Desenvolvimento Sustentável; Controle da Erosão; Plantio Direto; Cropping systems; Intensive livestock farming; Agroforestry; Soil conservation; Water conservation; Cotton; Bean meal; Soybean meal; Soybean oil; Sesame meal; Sustainable development; Erosion control; Direct seeding.
Ano: 2022
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1150301

Vida na água: conservação e uso responsável dos mares, oceanos e ambientes costeiros.
Provedor de dados: 14
Autores: FOGACA, F. H. dos S.; FURTADO, A. A. L.; SILVA, C. A. da; TAVARES-DIAS, M.; KEMENES, A.; ROUTLEDGE, E. A. B.
bitstream/item/183515/1/cap.1.pdf
Tipo: Capítulo em livro técnico (INFOTECA-E)
Palavras-chave: Ecossistemas marinhos; Biotecnologia marinha; Ecossistema; Desenvolvimento Sustentável; Conservação da Água; Recurso Pesqueiro; Water conservation; Sustainable development.
Ano: 2018
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1096294

Água: sem ela seremos o planeta Marte de amanhã.
Provedor de dados: 14
Autores: GOMES, M. A. F.
bitstream/item/56770/1/2011AM02.pdf
Tipo: Artigo de divulgação na mídia (INFOTECA-E)
Palavras-chave: Água; Recurso hídrico; Water; Water conservation.
Ano: 2012
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/921047

O aquífero Guarani no contexto das mudanças climáticas globais.
Provedor de dados: 14
Autores: GOMES, M. A. F.
bitstream/item/56771/1/2011AM03.pdf
Tipo: Artigo de divulgação na mídia (INFOTECA-E)
Palavras-chave: Aquífero Guarani; Recurso hídrico; Aquifers; Water conservation.
Ano: 2011
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/921054

MANEJO e conservação de solo e água: o meio ambiente agradece.
Provedor de dados: 14
Tipo: Folders
Palavras-chave: Manejo de Água; Manejo do Solo; Conservação da Água; Conservação do Solo; Water management; Soil management; Water conservation; Soil conservation.
Ano: 2002
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/985951

Agricultural water productivity: issues, concepts and approaches.
Provedor de dados: 31
Autores: Cook,   Simon; Gichuki,   Francis; Turral,   Hugh.
Tipo: Working or Discussion Paper
Palavras-chave: Water scarcity; Irrigation water; Productivity; Indicators; Water conservation; River basins; Production Economics; Productivity Analysis; Resource /Energy Economics and Policy.
Ano: 2006
URL: http://purl.umn.edu/91963

Aquifer Depletion and the Cost of Water Conservation:  The Southern High Plains of Texas Case
Provedor de dados: 31
Autores: Wheeler,   Erin A.; Segarra,   Eduardo; Johnson,   Phillip N.; Willis,   David B.; Johnson,   Jeffrey W.
Irrigated agriculture has played a vital role in the development and growth of the Great Plains Region of the United States. The primary source of water for irrigation in this region is the Ogallala Aquifer. The Southern portion of the Ogallala Aquifer is considered exhaustible due to the low level of recharge relative to the quantities of water pumped. Analysis and evaluation of water conservation policies which could extend the economic life of the Ogallala Aquifer in the Southern High Plains of Texas and Eastern New Mexico, and which could contribute to maintaining the viability of the regional economy is important. This study evaluates the impacts of water conservation policies which limit drawdown of the Ogallala Aquifer. County level dynamic...
Tipo: Conference Paper or Presentation
Palavras-chave: Water conservation; Water policy evaluation; Aquifer management; Dynamic optimization; Resource /Energy Economics and Policy.
Ano: 2006
URL: http://purl.umn.edu/25410

Policies drain the North China Plain: Agricultural policy and groundwater depletion in Luancheng County, 1949-2000
Provedor de dados: 31
Autores: Kendy,   Eloise; Molden,   David J.; Steenhuis,   Tammo S.; Liu,   Changming; Wang,   Jinxia.
The report examines the relationships between agricultural policies in the North China Plain, the approaches to water management that evolved from them, the quantity of water that was actually used, and the consequent groundwater depletion beneath Luancheng County, Hebei Province, from 1949 to 2000. To systematically address these relationships, we use a comprehensive water-balance approach. Our results indicate that a single, longstanding policy-that of using groundwater to meet the crop-water requirements not supplied by precipitation-is responsible for the steady rate of groundwater decline.
Tipo: Report
Palavras-chave: Agricultural production; Groundwater; Aquifers; Water shortage; Irrigation efficiency; Agricultural policy; Crop production; Wastewaters; Water management; Hydrology; Economic development; Crop yield; Cotton; Wheat; Sprinkler irrigation; Water conservation; Water use efficiency; Pumping; Water balance; Vegetables; Rural economy; Irrigated framing; Community/Rural/Urban Development; Crop Production/Industries; Environmental Economics and Policy.
Ano: 2003
URL: http://purl.umn.edu/44560

Environmental water needs and impacts of irrigated agriculture in river basins:  A framework for a new research program
Provedor de dados: 31
Autores: Smakhtin,   Vladimir U.
Tipo: Working or Discussion Paper
Palavras-chave: Water resource management; Water conservation; Irrigated farming; River basins; Environmental effects; Ecosystems; Water requirements; Water allocation; Catchment areas; Lagoons; Wetlands; Environmental Economics and Policy; Farm Management; Resource /Energy Economics and Policy.
Ano: 2002
URL: http://purl.umn.edu/92695

Does international cereal trade save water? The impact of virtual water trade on global water use
Provedor de dados: 31
Autores: de Fraiture,   Charlotte; Cai,   Ximing; Amarasinghe,   Upali A.; Rosegrant,   Mark W.; Molden,   David J.
Tipo: Report
Palavras-chave: Cereals; Trade policy; Water use; Irrigation water; Productivity; Evapotranspiration; Water scarcity; Water conservation; Crop Production/Industries; Production Economics; Productivity Analysis; Resource /Energy Economics and Policy.
Ano: 2004
URL: http://purl.umn.edu/92832

Groundwater Conservation Policy in Agriculture
Provedor de dados: 31
Autores: Wilson,   Paul N.; Needham,   Robert A.
Transboundary water conflicts between urban and rural populations often center on water use in the agricultural sector. Public officials may select a water conservation policy as the primary tool for reducing agricultural water use with the goal to improve water availability to urban areas and future generations. The Groundwater Management Act of 1980 (GMA) in Arizona was designed, in part, to induce water conservation in irrigated agriculture to sustain economic growth in an arid climate. Our mixed-method evaluation design merges qualitative, interview-based information with an estimated water demand function using panel data. We find that the GMA began with a flawed design and evolved through political circumstances into a ineffective water conservation...
Tipo: Conference Paper or Presentation
Palavras-chave: Impact assessment; Public policy; Irrigation; Water conservation; Resource /Energy Economics and Policy.
Ano: 2006
URL: http://purl.umn.edu/25296

Strategic Analyses of the National River Linking Project (NRLP) of India, Series 1. India’s water future: scenarios and issues
Provedor de dados: 31
Tipo: Book
Palavras-chave: River basins; Environmental flows; Development projects; Water requirements; Irrigated farming; Water demand; Food demand Groundwater irrigation; Irrigation efficiency; Water harvesting; Supplemental irrigation; Water productivity; Water conservation; Drip irrigation; Sprinkler irrigation; Rainfed farming; Agricultural policy; Agricultural and Food Policy; Farm Management.
Ano: 2009
URL: http://purl.umn.edu/113261

Multi-year Water Allocation: A Policy Analysis for Groundwater Management and Conservation for Irrigated Agriculture
Provedor de dados: 31
Autores: Tewari,   Rachna; Almas,   Lal K.; Lust,   David G.
Heavy withdrawals from the most dependable source of groundwater in the Texas Panhandle, the Ogallala Aquifer, create an impending need for implementing water conservation policies. This study evaluates the policy option of multi-year water allocation coupled with water use restriction in four water deficit counties of Castro, Deafsmith, Parmer and Swisher over a sixty year planning horizon. Results indicate that the water use in the study area declines with progressive restriction rates accompanied by a substantial decrease in the net present value of net returns over sixty years and therefore it is important to analyze the socio-economic effects of implementing such a policy alternative.
Tipo: Conference Paper or Presentation
Palavras-chave: Multi-year allocation; Ogallala Aquifer; Texas Panhandle; Water conservation; Environmental Economics and Policy; Farm Management; Resource /Energy Economics and Policy.
Ano: 2011
URL: http://purl.umn.edu/98737

Water Conservation and Residential Landscapes: Household Preferences, Household Choices
Provedor de dados: 31
Autores: Hurd,   Brian H.
Communities throughout the Western United States are challenged by tight water supplies and swelling populations. Information is needed to better develop and target municipal water conservation programs. Significant water savings ranging from 35% to 70% are possible from changes in residential landscaping and improved management of outside watering, which often accounts for more than 50% of total residential water use. This study examines landscape choices of homeowners in three cities in New Mexico in order to identify and measure behavioral factors affecting water conservation. Using survey data, landscape choices are analyzed with a mixed logit model that assesses the effects of landscape and homeowner characteristics on choice probabilities. Model...
Tipo: Journal Article
Palavras-chave: Discrete choice; Landscape preference; New Mexico water; Residential landscape; Water conservation; Water conservation programs; Water savings; Consumer/Household Economics; Resource /Energy Economics and Policy.
Ano: 2006
URL: http://purl.umn.edu/8605

Basin-level use and productivity of water: examples from South Asia
Provedor de dados: 31
Autores: Molden,   David J.; Sakthivadivel,   Ramasamy; Habib,   Zaigham.
Discusses and illustrates concepts for identifying ways of improving productivity of water within basins. The results of applying a water accounting procedure to four sub-basins in South Asia (Bhakra in India; Chishtian in Pakistan; Huruluwewa in northern Sri Lanka; and Kirindi Oya in southern Sri Lanka) are presented. The methodology used identifies the quantities and productivity of various uses of water within a basin. This information is then used to identify the water-saving potential, and the means of improving the productivity of the managed supplies.
Tipo: Report
Palavras-chave: Water management; Water conservation; River basins; Water use; Productivity; Case studies; Irrigated farming; Indicators; Water scarcity; South Asia; India; Pakistan; Sri Lanka; Bhakra; Chishtian; Kirindi Oya; Agribusiness; Agricultural and Food Policy; Agricultural Finance; Community/Rural/Urban Development; Crop Production/Industries; Farm Management; Production Economics; Research and Development/Tech Change/Emerging Technologies; Resource /Energy Economics and Policy.
Ano: 2001
URL: http://purl.umn.edu/61099

Economic Impacts of Reduced Delta Exports Resulting from the Wanger Interim Order for Delta Smelt
Provedor de dados: 31
Autores: Sunding,   David L.; Ajami,   Newsha K.; Hatchett,   Steven; Mitchell,   David; Zilberman,   David.
Tipo: Working or Discussion Paper
Palavras-chave: Water transfers; Water supply; Water demand; Water conservation; Water policy; Environmental Economics and Policy; Research Methods/ Statistical Methods.
Ano: 2009
URL: http://purl.umn.edu/51558

PRICE-RESPONSIVENESS OF DEMAND FOR IRRIGATION WATER WITHDRAWALS VS. CONSUMPTIVE USE: ESTIMATES AND POLICY IMPLICATIONS
Provedor de dados: 31
Autores: Young,   Robert A.; Cardon,   Grant E.; Scheierling,   Susanne M.
Of water withdrawn for agricultural crop irrigation, a portion is consumed and the remainder comes back to the hydrologic system as return flows. Previous models of irrigation water demand have mostly focused on the change in withdrawals in response to price changes, even though knowledge of the response of consumptive use is often more significant for river basin planning. This study develops a simulation/mathematical programming model of water demand representing an irrigation company in northeastern Colorado to analyze the effect of hypothetical price increases on both the demand for withdrawals and a derived demand for consumptive use. The results demonstrate that consumptive use demand tends to be significantly less price-responsive than withdrawal...
Tipo: Conference Paper or Presentation
Palavras-chave: Crop simulation; Irrigation; Linear programming; Water conservation; Water-demand elasticities; Water policy; Resource /Energy Economics and Policy.
Ano: 2003
URL: http://purl.umn.edu/35974

Guide to on-site wastewater management for industrial and commercial establishments and other institutions: guide for hotel and restaurant owners and managers in Kurunegala, Sri Lanka
Provedor de dados: 31
Autores: Dissanayake,   Priyanka; Tennakoon,   Mangala.
Tipo: Book
Palavras-chave: Wastewater treatment; Water conservation; Environmental Economics and Policy; Health Economics and Policy; Industrial Organization.
Ano: 2008
URL: http://purl.umn.edu/113262

Heterogeneous Responses to Water Conservation Programs: The Case of Residential Users in Los Angeles
Provedor de dados: 31
Autores: Hanemann,   W. Michael; Nauges,   Celine.
We propose a detailed analysis of heterogeneity in households’ responses to water conservation programs (price increase, voluntary and mandatory conservation) during periods of water shortage. Using a unique dataset covering water consumption of all residential users in Los Angeles (California) during the drought (1988-1992), we show that households generally were responsive to the conservation measures but that the magnitude of households’ responses varies depending on the instrument and on households’ characteristics, in particular the size of their lot. Price elasticity is estimated between –0.29 and –0.47 in the high season (June-October), and between 0 and –0.19 in the low season (November-May). Results suggest that the voluntary conservation program...
Tipo: Working or Discussion Paper
Palavras-chave: Water conservation; Residential use; Heterogeneity in behavior; Panel data; Resource /Energy Economics and Policy; C23; D12; Q25.
Ano: 2006
URL: http://purl.umn.edu/7158

Does food trade save water?: the potential role of food trade in water scarcity mitigation
Provedor de dados: 31
Autores: International Water Management Institute (IWMI).
This Water Policy Briefing is based on the CA Research Report 4: Does International Cereal Trade Save Water? The Impact of Virtual Water Trade on Global Water Use (CA Research Report 4) by Charlotte de Fraiture, Ximing Cai, Upali Amarasinghe, Mark Rosegrant and David Molden; and on Investing in Water for Food, Ecosystems and Livelihoods (BLUE PAPER, Stockholm 2004, Discussion Draft) by David Molden and Charlotte de Fraiture; and on Is Virtual Water Trade a Solution for Water Scarce Countries? by Charlotte de Fraiture and David Molden, Bridges 2004. By the year 2050 there will be an additional 3 billion people to feed. Food production may need to increase by 70-90 percent from levels in 2000 to meet this global food demand. Without improvements in the...
Tipo: Report
Palavras-chave: Food production; Trade; Water conservation; Crop Production/Industries; Food Consumption/Nutrition/Food Safety; International Relations/Trade.
Ano: 2007
URL: http://purl.umn.edu/113014

Water management in the Yellow River Basin: Background, current critical issues and future research needs
Provedor de dados: 31
Autores: Giordano,   Mark; Zhu,   Zhongping; Cai,   Ximing; Hong,   Shangchi; Xue,   Yunpeng; Zhang,   Xuecheng.
Tipo: Report
Palavras-chave: River basin development; Water management; Water use; History; Water stress; Water scarcity; Flood water; Soil conservation; Policy; Water quality; Environmental effects; Water conservation; Irrigation water; Pollution control; Environmental Economics and Policy; Resource /Energy Economics and Policy; Risk and Uncertainty.
Ano: 2004
URL: http://purl.umn.edu/92826

Irrigated agriculture, water pricing and water savings in the Lower Jordan River Basin (in Jordan)
Provedor de dados: 31
Autores: Venot,   Jean-Philippe; Molle,   Francois; Hassan,   Yousef.
Tipo: Report
Palavras-chave: Farming systems; Irrigated farming; Water conservation; Groundwater; Water policy; Water rates; Water costs; Pricing; Cost recovery; Economic impact; Jordan; Lower Jordan River Basin; Jordan Valley; Amman-Zarqa Basin; Yarmouk Basin; Agricultural and Food Policy; Community/Rural/Urban Development; Crop Production/Industries; Environmental Economics and Policy; Farm Management; Food Security and Poverty; Land Economics/Use; Research and Development/Tech Change/Emerging Technologies; Resource /Energy Economics and Policy.
Ano: 2007
URL: http://purl.umn.edu/91468

Determining the Price-Responsiveness of Demands for Irrigation Water Deliveries versus Consumptive Use
Provedor de dados: 31
Autores: Scheierling,   Susanne M.; Young,   Robert A.; Cardon,   Grant E.
A water-crop simulation/mathematical programming model of irrigation water demand in northeastern Colorado is formulated to develop an original concept of derived demand for consumptive use of water. Conventional demand functions for water deliveries are also developed, and the effect of hypothetical price increases on both consumption and delivery are illustrated. Findings indicate that demand elasticity estimates are quite sensitive to model specification, and consumptive use demand tends to be significantly less price-responsive than delivery demand. Thus price incentives are likely to have only limited impacts on basin-wide water consumption and would not make much additional water available for emerging demands.
Tipo: Journal Article
Palavras-chave: Crop simulation; Irrigation; Mathematical programming; Water conservation; Water-demand elasticities; Water policy; Demand and Price Analysis; Resource /Energy Economics and Policy.
Ano: 2004
URL: http://purl.umn.edu/31107

Integrated water resource systems:  Theory and policy implications
Provedor de dados: 31
Autores: Keller,   Andrew; Keller,   Jack; Seckler,   David.
Presents the concept of integrated water resources systems (IWS) as clearly and simply as possible, with a focus on the irrigation sector-the largest and most complex user of water.
Tipo: Report
Palavras-chave: Water resource management; Water policy; Irrigation efficiency; Water demand; Leaching; Water use efficiency; Water supply; Evapotranspiration; Models; Water conservation; Crop Production/Industries; Farm Management; Land Economics/Use; Research and Development/Tech Change/Emerging Technologies.
Ano: 1996
URL: http://purl.umn.edu/52730

Adoption and impacts of zero tillage as a resource conserving technology in the irrigated plains of South Asia
Provedor de dados: 31
Autores: Erenstein,   Olaf; Farooq,   Umar; Malik,   R.K.; Sharif,   Muhammad.
The recent stagnation of productivity growth in the irrigated areas of the Indo-Gangetic Plains of South Asia has led to a quest for resource-conserving technologies that can save water, reduce production costs and improve production. The present synthesis of two detailed country studies confirmed widespread adoption of zero tillage (ZT) wheat in the rice-wheat systems of India’s Haryana State (34.5% of surveyed households) and Pakistan’s Punjab province (19%). The combination of a significant “yield effect” and “cost-saving effect” makes adoption worthwhile and is the main driver behind the rapid spread and widespread acceptance of ZT in Haryana, India. In Punjab, Pakistan, adoption is driven by the significant ZT-induced cost savings for wheat...
Tipo: Report
Palavras-chave: Zero tillage; Rice; Wheat; Water conservation; India; Pakistan; Haryana; Punjab; Agribusiness; Crop Production/Industries; Environmental Economics and Policy; Farm Management; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; Land Economics/Use; Production Economics; Productivity Analysis; Resource /Energy Economics and Policy; Risk and Uncertainty.
Ano: 2007
URL: http://purl.umn.edu/91816

ANALYSING THE LOW ADOPTION OF WATER CONSERVATION TECHNOLOGIES BY SMALLHOLDER FARMERS IN SOUTHERN AFRICA
Provedor de dados: 31
Autores: Perret,   Sylvain R.; Stevens,   Joe B.
Natural resource degradation and water scarcity are a global concern, which typically threatens the sustainability of smallholder farmers' livelihoods in semi-arid developing areas.  As part of research efforts, a number of water-conservation technologies (WCT) have been developed, yet with low adoption rates in smallholder farming environments.  This paper discusses the concepts of adoption and innovation, comparing the perspectives of research operators to the ones of smallholder farmers.  Discrepancies are highlighted and ultimately explain low uptake of technologies by farmer.  Then it addresses socio-economic factors affecting such adoption.  It is argued that WCT show specific traits: (1) diversity and applicability to different time and spatial...
Tipo: Working or Discussion Paper
Palavras-chave: Adoption; Innovation; Water conservation; Technologies; Collective action; Property rights; Sustainability; Livelihoods; Resource /Energy Economics and Policy.
Ano: 2003
URL: http://purl.umn.edu/18028

Water use efficiency and maximizing profitability of grain sorghum  production in the Texas Panhandle
Provedor de dados: 31
Autores: Ahamadou,   Aly; Dembele,   Mamadou; Almas,   Lal K.; Brooks,   Kathleen R.
The reduction in the availability of irrigation water and the increase in pumping costs resulting from the decline in the Ogallala Aquifer make good management decisions more critical for the survival of the farm firm and the success of the agricultural sector in the Texas Panhandle. Response functions for irrigation and percentage potential evapotranspiration (PET) in the production of grain sorghum are estimated.  The response functions are transferred into value product functions and combined with an irrigation energy cost function to determine the profit maximizing irrigation strategy. Three management decision variables; total water available, the level of irrigation and the water to meet crop ET requirements are evaluated. Grain sorghum yield,...
Tipo: Presentation
Palavras-chave: Grain sorghum; ET; Maximizing profit; Irrigation efficiency; Input use optimization; Water conservation; Ogallala Aquifer; Texas Panhandle.; Farm Management; Production Economics; Productivity Analysis; Resource /Energy Economics and Policy; Q12; Q15; Q25; Q32; And Q34.
Ano: 2012
URL: http://purl.umn.edu/119801

Overview of water and soil nutrient management under smallholder rain-fed agriculture in East Africa.
Provedor de dados: 31
Autores: Mati,   Bancy Mbura.
Tipo: Working or Discussion Paper
Palavras-chave: Soil conservation; Water conservation; Water harvesting; Terraces; Tillage; Ridging; Cropping systems; Bunds; Sugarcane; Spate irrigation; Pitcher irrigation; Water storage; Soil fertility; Fertilizers; Non-governmental organizations; Farmers’ associations; Agroforestry; Agricultural extension; Agricultural and Food Policy; Agricultural Finance; Crop Production/Industries; Industrial Organization; Resource /Energy Economics and Policy.
Ano: 2005
URL: http://purl.umn.edu/92406

China’s water pricing reforms for irrigation: effectiveness and impact
Provedor de dados: 31
Autores: Liao,   Yongsong; Gao,   Zhanyi; Bao,   Ziyun; Huang,   Qingwen; Feng,   Guangzhi; Xu,   Di; Cai,   Jiabin; Han,   Huijing; Wu,   Weifeng.
Irrigation occupies a central position in China’s crop production. However, due to low per capita water resources, much worse, unevenly distributed over regions and time and the rapid increase of water diversions to non-irrigation sectors, irrigation water shortages have become a very serious problem. Without the adoption of effective measures this problem may even threaten China’s food security. Currently, irrigation efficiency is very low in general, irrigation water prices cannot fully recover water supply costs, and irrigation facilities are aging due to the lack of funding for O&amp;M (operation &amp; maintenance). Since water prices are regulated by the government, and not determined by the market, water prices did not work effectively in water...
Tipo: Working or Discussion Paper
Palavras-chave: Water rates; Pricing; Price policy; Cost recovery; Farmers attitudes; Water rights; Water market; Water supply; User charges; Irrigation water; Water allocation; Irrigation management; Participatory management; Water conservation; Institutions; Organizations; Water users associations; Cereals; Yields; Models; Labor; Cost benefit analysis; Irrigation requirements; Investment; Groundwater management; Wells; Irrigation canals; Food security; Legal aspects; Crop Production/Industries; Farm Management; Food Security and Poverty; Production Economics; Resource /Energy Economics and Policy.
Ano: 2008
URL: http://purl.umn.edu/91872

Towards a Sustainable Future: The Dynamic Adjustment Path of Irrigation Technology and Water Management in Western U.S. Agriculture
Provedor de dados: 31
Autores: Schaible,   Glenn D.; Kim,   C.S.; Aillery,   Marcel P.
Tipo: Conference Paper or Presentation
Palavras-chave: Technology adoption; Water conservation; Irrigation; Dynamic groundwater models; Sustainable agriculture; Environmental Economics and Policy; Resource /Energy Economics and Policy.
Ano: 2009
URL: http://purl.umn.edu/49244

Water productivity in the Syr-Darya River Basin
Provedor de dados: 31
Autores: Murray-Rust,   Hammond; Abdullaev,   Iskandar; Ul Hassan,   Mehmood; Horinkova,   Vilma.
This report analyses water productivity and water-saving initiatives in the Syr-Darya river basin in Central Asia and presents institutional and political aspects of water management in the basin.
Tipo: Report
Palavras-chave: Water resource management; Productivity; Irrigation effects; Institutional development; Water allocation; Irrigated farming; Irrigation canals; Water demand; Irrigation requirements; Water distribution; Water delivery; Crop yield; River basins; Water conservation; Central Asia; Aral Sea; Syr-Darya; Agricultural and Food Policy; Community/Rural/Urban Development; Crop Production/Industries; Environmental Economics and Policy; Farm Management; Land Economics/Use; Productivity Analysis; Resource /Energy Economics and Policy.
Ano: 2003
URL: http://purl.umn.edu/61097

THE EMERGENCE AND SPREADING OF AN IMPROVED TRADITIONAL SOIL AND WATER CONSERVATION PRACTICE IN BURKINA FASO
Provedor de dados: 31
Autores: Kabore,   Daniel; Reij,   Chris.
This paper describes the emergence of improved traditional planting pits (zaï) in Burkina Faso in the early 1980s as well as their advantages, disadvantages and impact. The zaï emerged in a context of recurrent droughts and frequent harvest failures, which triggered farmers to start improving this local practice. Despair triggered experimentation and innovation by farmers. These processes were supported and complemented by external intervention. Between 1985 and 2000 substantial public investment has taken place in soil and water conservation (SWC). The socio-economic and environmental situation on the northern part of the Central Plateau is still precarious for many farming families, but the predicted environmental collapse has not occurred and in many...
Tipo: Working or Discussion Paper
Palavras-chave: Soil fertility; Soil conservation; Water conservation; Resource /Energy Economics and Policy.
Ano: 2004
URL: http://purl.umn.edu/16087

Measuring the Impact of the Environmental Quality Incentives Program (EQIP) on Irrigation Efficiency and Water Conservation
Provedor de dados: 31
Autores: Wallander,   Steven; Hand,   Michael S.
Since the passage of the 1996 Farm Act, the Environmental Quality Incentives Program (EQIP) has provided over $10 billion in technology adoption subsidies. One of the national conservation priorities in EQIP is water conservation, but it is not known how participation in EQIP by irrigators affects water application rates and decisions to expand or reduce a farm’s irrigated acreage. Using a farm-level panel data set drawn from three national samples of irrigators taken in 1998, 2003, and 2008, this study provides the first national scale econometric estimates of the changes in water application rates and irrigated acreage that result when a farm receives EQIP payments. Due to a five-fold increase in EQIP funding following the 2002 farm bill, the change in...
Tipo: Conference Paper or Presentation
Palavras-chave: EQIP; Irrigation efficiency; Water conservation; Difference-in-differences; Matching estimator; Environmental Economics and Policy.
Ano: 2011
URL: http://purl.umn.edu/103269

Actual and Predicted Evapotranspiration Along with Groundwater Contribution for Wheat Crop
Provedor de dados: 111
Autores: Dahri, Shahzad Hussain; Mangrio, Munir Ahmed; Shaikh, Irfan Ahmed; Dahri, Zakir Hussain; Syed, Ain-ul-Abad; Jakhrani, Jazib Hussain; Syed, Taimoor Ali.
This experiment aimed to determine the crop evapotranspiration (ETc), groundwater input in total water used by wheat crop, and to simulate the CROPWAT model to envisage the crop evapotranspiration rate. To estimate on-field ETc and groundwater contribution the combining lysimeter technique was used. The water levels below the soil surface were kept at 1.60, 2.20, and 2.80 m and each water table depth was replicated three times. The experiment was conducted under silt loam (SL) and silty-clay loam (SCL) soil conditions. The climatic parameters and water balance components were recorded accordingly. The on-field ETc was compared with the predicted ETc by CROPWAT model. Under SL soil, the observed ETc was 442, 427, and 401 mm at the water table depth of 1.60,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Water conservation; Irrigation amount; Groundwater; And Crop evapotranspiration.
Ano: 2021
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6605