Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 63
Primeira ... 1234 ... Última
Imagem não selecionada

Imprime registro no formato completo
2nd Forum on Irrigation and water for sustainable development: 15 –16 December, 2008 Ghion Hotel, Addis Ababa, Ethiopia AgEcon
Awulachew, Seleshi Bekele; Erkossa, Teklu; Balcha, Yodit.
Tipo: Presentation Palavras-chave: Sustainable development; Irrigation management; Irrigation water; Irrigated farming; Irrigation systems; Supplemental irrigation; Land management; Land use; Investment; Case studies; Government policy; Rural poverty; Groundwater; Small scale systems; Socioeconomic development; Economic aspects; Economic growth; Income; Water management; Water resources development; Water harvesting; Water supply; Public policy; Agricultural production; Developing countries; Public-private cooperation; History; Case studies; River basins; Crop production; Agricultural and Food Policy; Agricultural Finance; Crop Production/Industries; Farm Management; Financial Economics; Food Security and Poverty; Institutional and Behavioral Economics; Land Economics/Use; Production Economics; Public Economics; Research and Development/Tech Change/Emerging Technologies; Research Methods/ Statistical Methods; Resource /Energy Economics and Policy.
Ano: 2008 URL: http://purl.umn.edu/118411
Imagem não selecionada

Imprime registro no formato completo
Accounting for water use and productivity AgEcon
Molden, David J..
This paper presents a conceptual framework for water accounting and provides generic terminologies and procedures to describe the status of water resource use and consequences of water resources related actions. The framework applies to water resource use at three levels of analysis: a use level such as an irrigated field or household, a service level such as an irrigation or water supply system, and a water basin level that may include several uses. Water accounting terminology and performance indicators are developed and presented with examples at all the three levels. Concepts and terminologies presented are developed to be supportive in a number of activities including: identification of opportunities for water savings and increasing water...
Tipo: Book Palavras-chave: Water management; Irrigation management; Water supply; Terminology; Performance indexes; Water use; Water allocation; Productivity; Water balance; Crop Production/Industries; Farm Management; Productivity Analysis.
Ano: 1997 URL: http://purl.umn.edu/113623
Imagem não selecionada

Imprime registro no formato completo
Alternativas de captação de água visando ao aumento da oferta hídrica na Agrovila Mambaí- GO. Infoteca-e
SILVA, E. M. da; LIMA, J. E. F. W..
ABSTRACT: The water supply for human use in Brazilian rural areas of the Cerrado region depends greatly on local natural water resources. In the community of smallholder farmers, know as Agrovila Mambaí, located in Mambaí, GO, has been undergoing this type of situation. The objective of this work has been developed aiming at presenting technical alternatives to improve the current water system capacity to supply water the referred smallholder farmers. In older to support this analysis, there were used nearby hydrological data and digital map of the area to estimate the availability of water resources. Besides this, it was carried out local inventory to evaluate watershed conditions and the alternatives for improving the current water supply systems to...
Tipo: Documentos (INFOTECA-E) Palavras-chave: Disponibilidade de água; Captação d'água; Manejo de água; Cerrado; Abastecimento de água; Mambaí; Goiás; Brasil; Water availability; Water binding capacity; Water supply; Brazil.
Ano: 2003 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/568175
Imagem não selecionada

Imprime registro no formato completo
Assessment of performance and impact of irrigation and water resources systems in Taiwan and Sri Lanka: Final report AgEcon
Sakthivadivel, Ramasamy; Aloysius, Noel; Matsuno, Yutaka.
Tipo: Working or Discussion Paper Palavras-chave: Irrigation systems; Water scarcity; Water allocation; Water supply; Water quality; Water distribution; Decision making; Water management; Regression analysis; Performance evaluation; Sustainability; Irrigated farming; Agricultural development; Farm size; Irrigation management; Farmers' associations; Rain; Paddy cultivation; Crop yield; Costs; Productivity; Crop Production/Industries; Farm Management; Productivity Analysis; Resource /Energy Economics and Policy.
Ano: 2001 URL: http://purl.umn.edu/92774
Imagem não selecionada

Imprime registro no formato completo
Capacity building for participatory irrigation management in Sindh Province of Pakistan. AgEcon
Memon, Yameen; Talpur, Mustafa; Murray-Rust, Hammond.
Tipo: Working or Discussion Paper Palavras-chave: River basins; Institutions; Organizations; Private sector; Public sector; Local government; Mapping; Water resource management; Water policy; Legislation; Rural women; Constraints; Groundwater; Surface water; Water quality; Water use; Water users; Dams; Reservoirs; Large-scale systems; Irrigation management; Industrialization; Case studies; Operations; Maintenance; Canals; Conflict; Farmer-agency interactions; Policy; Water supply; Rural development; Community/Rural/Urban Development; Farm Management; Institutional and Behavioral Economics; Research and Development/Tech Change/Emerging Technologies; Research Methods/ Statistical Methods; Resource /Energy Economics and Policy.
Ano: 2001 URL: http://purl.umn.edu/92769
Imagem não selecionada

Imprime registro no formato completo
Changes in water duties and their impact on agricultural production: the case of Girsal Minor AgEcon
Strosser, Pierre; Afaq, Rana M.; Garces, Carlos.
Tipo: Working or Discussion Paper Palavras-chave: Irrigation management; Canal irrigation; Water supply; Water management; Watercourses; Tube wells; Agricultural production; Crop yield; Wheat; Crop Production/Industries; Farm Management; Production Economics.
Ano: 1993 URL: http://purl.umn.edu/114046
Imagem não selecionada

Imprime registro no formato completo
China’s water pricing reforms for irrigation: effectiveness and impact AgEcon
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&M (operation & 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
Imagem não selecionada

Imprime registro no formato completo
Cities versus agriculture: Revisiting intersectoral water transfers, potential gains and conflicts AgEcon
Molle, Francois; Berkoff, Jeremy.
Tipo: Report Palavras-chave: Water scarcity; Water demand; Water transfer; Water use; Water supply; Water allocation; Environmental effects; Water market; Community/Rural/Urban Development; Crop Production/Industries; Demand and Price Analysis; Environmental Economics and Policy; Farm Management; Land Economics/Use; Production Economics; Productivity Analysis; Risk and Uncertainty.
Ano: 2006 URL: http://purl.umn.edu/91817
Imagem não selecionada

Imprime registro no formato completo
Crescimento inicial do meloeiro frente às mudanças climáticas. Repositório Alice
ARAUJO, L. F. de.
O cenário futuro de mudanças climáticas, principalmente no semiárido nordestino, incluindo a elevação da temperatura e da concentração de CO2, diminuição da disponibilidade hídrica e desertificação, ocasionando salinização da água e do solo, poderá causar impacto no manejo do meloeiro. Dessa forma, objetiva-se avaliar o crescimento inicial de plantas de meloeiro frente às mudanças na concentração de CO2, temperatura, salinidade e lâminas de irrigação, visando verificar os impactos da mudança climática sobre a cultura, como também elucidar mecanismos de tolerância, de forma a auxiliar na obtenção de materiais mais produtivos. Dois experimentos foram realizados na Embrapa Semiárido (Petrolina ? PE) e outros dois foram conduzidos na Embrapa Agroindústria...
Tipo: Tese/dissertação (ALICE) Palavras-chave: Elevada concentração de dióxido de carbono; Altas temperaturas; Melão; Salinidade; Melons; Water supply; Salinity.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1105112
Imagem não selecionada

Imprime registro no formato completo
Developing effective institutions for water resources management: A case study in the Deduru Oya Basin, Sri Lanka AgEcon
Somaratne, Pallewatte G.; Jinapala, Kiribandage; Perera, L.R.; Ariyaratne, Badugodahewa Ranjith; Bandaragoda, Don Jayatissa; Makin, I.W..
Tipo: Working or Discussion Paper Palavras-chave: River basins; Water resource management; Water lifting; Wells; Domestic water; Population; Economic aspects; Income; Irrigation programs; Institutions; Policy; Groundwater; Agricultural development; Fish farming; Pumps; Ecology; Water supply; Drought; Poverty; Land use; Water scarcity; Natural resources; Agricultural production; Cropping systems; Agricultural and Food Policy; Agricultural Finance; Consumer/Household Economics; Crop Production/Industries; Food Security and Poverty; Institutional and Behavioral Economics; Land Economics/Use; Political Economy; Production Economics; Public Economics; Resource /Energy Economics and Policy.
Ano: 2003 URL: http://purl.umn.edu/92665
Imagem não selecionada

Imprime registro no formato completo
Development and evaluation of a regional water poverty index for Benin AgEcon
Heidecke, Claudia.
The paper discusses the application of the Water Poverty Index (WPI) as a monitoring tool for Benin’s water sector. Benin is currently in a process of political decentralization shifting responsibility for and administration of rural water supplies from the national to the communal level. Appropriate indicators are needed for monitoring and analyzing the progress of the water sector for each community. The Water Poverty Index allows monitoring of a combination of aspects affecting rural water management, including water sources, access to and use of water, human capacity to manage water, and environmental impacts. The application of this index is tested for Benin at the regional level. A series of variables have been chosen for inclusion into the index...
Tipo: Report Palavras-chave: Water poverty index; Water supply; Decentralization; Resource /Energy Economics and Policy.
Ano: 2006 URL: http://purl.umn.edu/55413
Imagem não selecionada

Imprime registro no formato completo
Dublin Ireland: a city addressing challenging water supply, management, and governance issues Ecology and Society
Kelly-Quinn, Mary; School of Biology & Environmental Science, University College Dublin; mary.kelly-quinn@ucd.ie; Blacklocke, Sean; School of Civil, Structural & Environmental Engineering, University College Dublin; sean-blacklocke@sean-blacklocke.com; Bruen, Michael; School of Civil, Structural & Environmental Engineering, University College Dublin; michael.bruen@ucd.ie; Earle, Ray; International Water Association; rayearlewater@gmail.com; O'Neill, Eoin; School of Geography, Planning & Environmental Policy, University College Dublin; eoin.oneill@ucd.ie; O'Sullivan, John; School of Civil, Structural & Environmental Engineering, University College Dublin; jj.osullivan@ucd.ie; Purcell, Patrick; School of Civil, Structural & Environmental Engineering, University College Dublin; pj.purcell@ucd.ie.
Tipo: Peer-Reviewed Reports Palavras-chave: Demand management; Dublin; Full cost recovery; Governance; Water supply.
Ano: 2014
Imagem não selecionada

Imprime registro no formato completo
Economic analysis of water supply cost structure in the Middle Olifants sub-basin of South Africa AgEcon
Tsegai, Daniel W.; Linz, Teresa; Kloos, Julia.
Using data gathered from the National Treasury of South Africa, we examine the structure of water supply costs and tariffs of Water Service Authorities (WSAs) in the Middle Olifants sub-basin of South Africa. Using the translog cost function method, the marginal cost of water supply and economies of scale are estimated. Comparison of tariffs and marginal costs show that the estimated marginal cost is higher than the actual tariff paid by consumers. This implies that WSAs in the Middle Olifants are not charging enough to recover the costs of the water services. Thus, among other things, pricing of water at its marginal cost would partly assist in solving the cost recovery problem. Raised tariffs would in turn contribute to improved efficiency of water use....
Tipo: Working or Discussion Paper Palavras-chave: Translog cost function; Water supply; Water Service Authority; Middle Olifants; South Africa; Environmental Economics and Policy.
Ano: 2009 URL: http://purl.umn.edu/49926
Imagem não selecionada

Imprime registro no formato completo
Economic Impacts of Reduced Delta Exports Resulting from the Wanger Interim Order for Delta Smelt AgEcon
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
Imagem não selecionada

Imprime registro no formato completo
ECONOMIC VALUATION OF SOME WETLAND OUTPUTS OF MUD LAKE, MINNESOTA-SOUTH DAKOTA AgEcon
Roberts, Lisa A.; Leitch, Jay A..
The objective of this study was to estimate some economic values of Mud Lake, a managed, lacustrine wetland on the Minnesota-South Dakota border. Several outputs of Mud Lake were identified and an economic value was estimated for each. Flood control was valued at approximately $440 per acre, based on dollar damages prevented; water supply, using public utility revenues, was valued at $94 per acre; fish/wildlife habitat, recreation, and aesthetics were valued at about $21 per acre using the Contingent Valuation Method; and corrective expenditures were used to evaluate water quality at a negative per acre value of $180. When capitalized at 6 percent, the estimated total annual value of these four outputs is $6,250 per acre. These values can assist...
Tipo: Working or Discussion Paper Palavras-chave: Wetland; Outputs; Economic valuation; Flood control; Water supply; Water quality; Recreation; Aesthetics; Fish/wildlife habitat; Contingent valuation method; Resource /Energy Economics and Policy; Land Economics/Use.
Ano: 1997 URL: http://purl.umn.edu/23406
Imagem não selecionada

Imprime registro no formato completo
Economies of Scale and Technical Efficiency in Community Water Systems AgEcon
Shih, Jhih-Shyang; Harrington, Winston; Pizer, William A.; Gillingham, Kenneth.
In this study we use datasets from the 1995 and 2000 Community Water Supply surveys to examine the production costs of water supply systems. We first estimate the economies of scale in water supply by estimating the total unit cost as well as individual component cost elasticities. For total unit cost elasticity, we find that a 1% increase in production reduces unit costs by a statistically significant 0.16%. For individual component cost elasticities, we find that higher economies of scale exist in capital costs, outside costs, other costs, and materials costs; labor costs and energy costs exhibit lower but still positive economies of scale. These economies of scale may reflect production economies or suggest that larger systems are better than smaller...
Tipo: Working or Discussion Paper Palavras-chave: Small water systems; Water supply; Capacity development; Economies of scale; Community water systems; Resource /Energy Economics and Policy; Q25; Q28.
Ano: 2004 URL: http://purl.umn.edu/10788
Imagem não selecionada

Imprime registro no formato completo
Efeitos da disponibilidade hídrica e de potássio na alocação de carbono em plantas de eucalipto marcadas com 13C-CO2. Repositório Alice
FURLAN, G.; CABRAL, O. M. R.; LACLAU, J.-P.; PACKER, A. P. C.; MAXIMILIANO, V. C. B.; MOREIRA, M..
Resumo: Neste trabalho são apresentados os resultados da alocação do carbono (C) recentemente assimilado em árvores de eucalipto submetidas a diferentes tratamentos com relação à disponibilidade hídrica (chuva normal e exclusão de 33%) e fertilização de potássio (0 e 4,5 Kmol ha-1 na forma de KCl), utilizando-se o método da marcação com 13C-CO2 (13C pulse labelling). Observou-se que o aumento da velocidade de crescimento das árvores aumenta a partição do C fixado na madeira e a implicação prática desta constatação, considerando-se a produção de uma quantidade fixa de madeira, é que o consumo de recursos será menor maximizando-se a produtividade numa pequena área, ao contrário de plantações pouco produtivas ocupando áreas maiores. Abstract: This work...
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Disponibilidade hídrica; Carbono; Eucalipto; Disponibilidade de água; Potássio; Carbon; Eucalyptus; Water supply; Potassium.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1006550
Imagem não selecionada

Imprime registro no formato completo
Effect of water supplied to Bogor no.2 corn and Hegari no.13 at Mae Klong Yai Irrigation Experiment Station, 1974 dry season Thai Agricultural
Pradit Ritruengdet.
6 tables
Palavras-chave: Corn; Maize; Sorghum; Water supply; Bogor no.2; Hegari no.13; Varieties; Mae Klong Yai irrigation; Dry season; Yields; ข้าวโพด; ข้าวฟ่าง; การใช้น้ำ; พันธุ์โบกอร์ 2; พันธุ์เฮกการี่ 13.
Ano: 1975 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3840
Imagem não selecionada

Imprime registro no formato completo
Effects of differential availability of water on rice yields and farm practices in the Vaca Creek irrigation system, Nueva Ecija, 1985 dry season. International Rice Research Institute
Bello, Rolando Trinidad.
89 leaves : ill., map. Thesis (M.S.) -- University of the Philippines at Los Baños
Tipo: Thesis Palavras-chave: Rice; Irrigation; Irrigation systems; Water supply; Yields; Philippines.
Ano: 1987 URL: http://hdl.handle.net/123456789/1341
Imagem não selecionada

Imprime registro no formato completo
Efficiency of Brazilian public and private water utilities. Repositório Alice
SOUZA, G. da S. e; FARIA, R. C. de.; MOREIRA, T. B. S..
2008
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Eficiência de custo; Fronteira estocástica; Water supply.
Ano: 2008 URL: http://www.alice.cnptia.embrapa.br/handle/doc/657567
Registros recuperados: 63
Primeira ... 1234 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional