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Registros recuperados: 42
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A global perspective on water scarcity and poverty: achievements and challenges for water resource management AgEcon
Barker, Randolph; van Koppen, Barbara; Shah, Tushaar.
Tipo: Book Palavras-chave: Water scarcity; Poverty; Water resources development; Groundwater management; Food security; Irrigated farming; Agricultural production; Tube well irrigation; Sustainability; Agricultural and Food Policy; Agricultural Finance; Crop Production/Industries; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; Production Economics; Resource /Energy Economics and Policy.
Ano: 2000 URL: http://purl.umn.edu/118302
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Agricultural water productivity: issues, concepts and approaches. AgEcon
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
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Alternate furrow irrigation of four fresh-market tomato cultivars under semi-arid condition of Ethiopia – Part I: Effect on fruit yield and quality JARTS
Bogale, Ashinie; Spreer, Wolfram; Gebeyehu, Setegn; Aguila, Miguel; Müller, Joachim.
Scarcity of freshwater due to recurrent drought threatens the sustainable crop production in semi-arid regions of Ethiopia. Deficit irrigation is thought to be one of the promising strategies to increase water use efficiency (WUE) under scarce water resources. A study was carried out to investigate the effect of alternate furrow irrigation (AFI), deficit irrigation (DI) and full irrigation (FI) on marketable fruit yield, WUE and physio-chemical quality of four fresh-market tomato cultivars (Fetan, Chali, Cochoro and ARP Tomato d2) in 2013 and 2014. The results showed that marketable yield, numbers of fruits per plant and fruit size were not significantly affected by AFI and DI irrigations. WUE under AFI and DI increased by 36.7% and 26.1%, respectively...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Natural resource management deficit irrigation; Tomato (Solanum lycopersicum L.); Tomato quality; Water scarcity; Water use efficiency.
Ano: 2016 URL: http://www.jarts.info/index.php/jarts/article/view/2016092050949
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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
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Basin-level use and productivity of water: examples from South Asia AgEcon
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
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Can virtual water 'trade' reduce water scarcity in semi-arid countries? The case of Spain AgEcon
Garrido, Alberto; Novo, Paula; Rodriguez Casado, Roberto; Varela-Ortega, Consuelo.
Agricultural trade is by far the largest vehicle to ‘move’ water virtually around the world. Observing that most countries import and export water embedded in the exchanged products, the objective of this study is to assess the virtual water ‘trade’ in Spain for the period 1997-2006. We differentiate between the green and blue components of virtual water from a hydrological and economic perspective. The combination of spatial and time dimensions offers a unique empirical setting to determine whether virtual water ‘trade’ can contribute to reduce water scarcity. The study reveals that Spain is a net ‘importer’ of virtual water. By far the largest virtual water ‘imports’ are linked to cereals and animal feed products whilst the virtual water ‘exports’ are...
Tipo: Conference Paper or Presentation Palavras-chave: Virtual water ‘trade’; Farm trade; Water scarcity; Agricultural and Food Policy; Crop Production/Industries; Environmental Economics and Policy; Land Economics/Use; Q15; Q17; Q25; Q27; Q56.
Ano: 2009 URL: http://purl.umn.edu/51048
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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
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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
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Does international cereal trade save water? The impact of virtual water trade on global water use AgEcon
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
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Drought impacts and potential for their mitigation in southern and western Afghanistan AgEcon
Bhattacharyya, Kamal; Azizi, Pir Mohammad; Shobair, Sayed Sharif; Mohsini, Mohammad Yasin.
Tipo: Working or Discussion Paper Palavras-chave: Drought; Rain; Water scarcity; Irrigation water; Domestic water; Crops; Forests; Pastures; Watersheds; Water harvesting; Crop Production/Industries; Resource /Energy Economics and Policy; Risk and Uncertainty.
Ano: 2004 URL: http://purl.umn.edu/92659
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Ecosystems for water and food security. [Background paper] AgEcon
Tipo: Book Palavras-chave: Agroecosystems; Agriculture; Food security; Food production; Water scarcity; Water management; Water productivity; Wetlands; Water use; Decision making; Environmental flows; Developing countries; Hunger; Poverty; Fisheries; Climate change; Agroforestry; Biodiversity; Rangelands; Livestock; Rainfed farming; Policy; Landscape; Agribusiness; Agricultural and Food Policy; Agricultural Finance; Community/Rural/Urban Development; Consumer/Household Economics; Crop Production/Industries; Demand and Price Analysis; Environmental Economics and Policy; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; Production Economics.
Ano: 2012 URL: http://purl.umn.edu/124386
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Estimating productivity of water at different spatial scales using simulation modeling AgEcon
Droogers, Peter; Kite, Geoff.
A clear understanding of the current water balance is required to explore options for water saving measures. However, measurement of all the terms in the water balance is infeasible in terms of spatial and temporal scale, but hydrological simulation models can fill the gap between measured and required data. For a basin in Western Turkey, simulation modeling at three different scales, field, irrigation scheme and basin scale, was performed to obtain all terms of the water balance. These water balance numbers were used to calculate the Productivity of Water at the three spatial levels distinguished to assess the performance of the systems.
Tipo: Report Palavras-chave: Water resources; Productivity; Simulation models; Water scarcity; Water supply; Water balance; Performance indexes; Indicators; River basins; Cropping systems; Crop yield; Cotton; Hydrology; Economic analysis; Agribusiness; Agricultural Finance; Crop Production/Industries; Environmental Economics and Policy; Production Economics; Productivity Analysis; Research Methods/ Statistical Methods.
Ano: 2001 URL: http://purl.umn.edu/44568
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Evolution of tubewell ownership and production in the North China Plain AgEcon
Wang, Jinxia; Huang, Jikun; Rozelle, Scott.
The overall aim of the present paper is to better understand the evolution of tubewell ownership in the North China Plain, especially focusing on the factors that determine ownership and its effect on production. Based on a random sample of 30 villages in three counties in the Hai River Basin, our results show that collectively owned tubewells have been gradually privatised. The analyses demonstrate that increasing water and land scarcity and policy intervention (mainly fiscal and financial subsidies for tubewell investment) leads to the observed shifts in tubewell ownership patterns. The results also show that the privatisation of tubewells has affected cropping patterns in the North China Plain. When villages shift towards private tubewells, farmers move...
Tipo: Article Palavras-chave: Agricultural production; China; Privatisation; Subsidies; Tubewell ownership; Water scarcity; Agribusiness.
Ano: 2005 URL: http://purl.umn.edu/118452
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Exit Timing Decisions under Land Speculation and Resource Scarcity in Agriculture AgEcon
Ranjan, Ram; Tapsuwan, Sorada.
This paper explores the concept of agricultural resilience in the context of climate change related water scarcity. Specifically, the impact of water scarcity on agricultural production is analyzed to derive the timing of exit decisions for farmers faced with the prospect of declining profitability in agriculture but increasing benefits from land rezoning in future. The prospects of land rezoning are modeled as a poison process which may or may not be influenced by farmer’s water abstraction decisions. Selling out of agriculture before land rezoning has an impatience cost as the farmer does not gain the maximum speculative rewards. The analysis highlights the role of such speculative rewards in making farmers resilient to declining profitability in...
Tipo: Conference Paper or Presentation Palavras-chave: Agricultural resilience; Exit timing; Water scarcity; Climate change; Environmental Economics and Policy; Farm Management; Land Economics/Use; Resource /Energy Economics and Policy.
Ano: 2008 URL: http://purl.umn.edu/5998
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Farmer response to rationed and uncertain irrigation supplies AgEcon
Perry, Christopher J.; Narayanamurthy, S.G..
Explores the theoretical and actual responses of farmers faced with irrigation supplies that are limited in relation to available land and labor resources, and where the actual schedule and available volume for delivery are uncertain.
Tipo: Report Palavras-chave: Water resource management; Water use efficiency; Evapotranspiration; Agricultural production; Irrigated farming; Irrigation scheduling; Water allocation; Water supply; Water scarcity; Water delivery; Reservoirs; Uncertainty; Yield; Crop Production/Industries; Labor and Human Capital; Land Economics/Use.
Ano: 1998 URL: http://purl.umn.edu/44582
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Food security and sustainable agriculture in India: The water management challenge AgEcon
Kumar, M. Dinesh.
Tipo: Working or Discussion Paper Palavras-chave: Sustainable agriculture; Food security; Water management; Water scarcity; Groundwater depletion; Waterlogging; Salinity; Soil degradation; Water use efficiency; Productivity; Equity; Irrigation water; Pricing; Agricultural and Food Policy; Agricultural Finance; Demand and Price Analysis; Food Consumption/Nutrition/Food Safety; Productivity Analysis; Resource /Energy Economics and Policy.
Ano: 2003 URL: http://purl.umn.edu/92666
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Food security for sub-Saharan Africa: does water scarcity limit the options? AgEcon
Gowing, John W..
Future food security can be achieved only by delivering substantial increases in agricultural production, but this has important implications for water availability. Water scarcity is not currently a major issue in sub-Saharan Africa, but it would be a mistake to neglect this issue. It would be a mistake also to assume that only plans for irrigated agriculture are affected. It should be recognised that a land-use decision is also a water-use decision. A plan based on improving rain-fed agriculture through adoption of measures to make better use of rainfall brings trade-offs in that there may be less runoff to satisfy the water needs of downstream users and environmental functions. Planning for future food security requires integrated analysis of land-use...
Tipo: Journal Article Palavras-chave: Food security; Water scarcity; Irrigation; Agriculture; Africa; Resource /Energy Economics and Policy.
Ano: 2003 URL: http://purl.umn.edu/47864
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Formal water rights in rural Tanzania: Deepening the dichotomy? AgEcon
van Koppen, Barbara; Sokile, Charlie S.; Hatibu, Nuhu; Lankford, Bruce A.; Mahoo, Henry F.; Yanda, Pius Z..
Tipo: Working or Discussion Paper Palavras-chave: Water rights; Water law; Water scarcity; Water use; Water users’ associations; Irrigation water; Cost recovery; Institutional and Behavioral Economics; Resource /Energy Economics and Policy.
Ano: 2004 URL: http://purl.umn.edu/92523
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Fundamentals of smallholder irrigation: the structured system concept AgEcon
Albinson, B.; Perry, Christopher J..
Tipo: Report Palavras-chave: Farmer managed irrigation systems; Irrigation canals; Watercourses; Small scale systems; Irrigation design; Irrigation operation; Irrigation scheduling; Water delivery; Water distribution; Productivity; Equity; Water scarcity; Farm size; Rice; Water conveyance; Hydraulics; Agribusiness; Community/Rural/Urban Development; Crop Production/Industries; Farm Management; Land Economics/Use; Production Economics.
Ano: 2002 URL: http://purl.umn.edu/52964
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Gas exchanges and production of colored cotton irrigated with saline water at different phenological stages Rev. Ciênc. Agron.
Soares,Lauriane Almeida dos Anjos; Fernandes,Pedro Dantas; Lima,Geovani Soares de; Suassuna,Janivan Fernandes; Pereira,Rennan Fernandes.
ABSTRACT Scarcity of good-quality water is a limiting factor for irrigated agriculture, especially in semi-arid regions, which leads to the use of water with high salt content to irrigate crops. Therefore, this study aimed to evaluate physiological aspects and production of colored cotton genotypes under saline stress, during the different development stages and under conditions of low and high salinity. The experiment was conducted using a randomized block design, with a 3 × 7 factorial scheme and three replicates. Treatments corresponded to three colored cotton genotypes irrigated with low-salinity water (0.8 dS m-1) and high-salinity water (9.0 dS m-1): T1-A1B1C1, T2-A2B1C1, T3-A1B2C1, T4-A1B1C2, T5-A2B1C2, T6-A2B2C1 and T7-A1B2C2 (A1, B1 and C1:...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Gossypium hirsutum L.; Water scarcity; Salinity.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902018000200239
Registros recuperados: 42
Primeira ... 123 ... Última
 

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