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Registros recuperados: 42
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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
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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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Análisis del comportamiento de la salinidad (intrusión salina) en el sistema Río Guayas Canal de Jambelí como parte del cambio climático OceanDocs
Arreaga Vargas, P..
El presente trabajo permite conocer el comportamiento de la cuña salina en el sistema Río Guayas - Canal de Jambelí, conociendo que el Río Guayas abastece de agua a Guayaquil, puerto principal del país, y a muchas otras poblaciones.
Tipo: Journal Contribution Palavras-chave: Water quality; Sea level; Climatic changes; Salt-wedge estuaries; Salt wedges; Salinity gradients; Irrigation water; River water; Rivers; Water quality; Irrigation water; Rivers; Sea level; Http://aims.fao.org/aos/agrovoc/c_16061; Http://aims.fao.org/aos/agrovoc/c_3958; Http://aims.fao.org/aos/agrovoc/c_6617; Http://aims.fao.org/aos/agrovoc/c_34115.
Ano: 2000 URL: http://hdl.handle.net/1834/2274
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Characterization of IRRI Farm: soil and irrigation water properties, nutritional disorders and rice yields International Rice Research Institute
Cayton, M. T. C.; Autor, N. U.; Reyes, R. Y.; Neue, H. U..
25 p. : ill. Paper presented at the IRRI Saturday Seminar, Dec. 3, 1988
Palavras-chave: IRRI; Farms; Soil; Irrigation water; Nutritional disorders; Yields.
Ano: 1988 URL: http://hdl.handle.net/123456789/373
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CHEMICAL CHANGES OF SOIL AND WATER IN HILLSIDE AREAS UNDER INTENSIVE HORTICULTURE REA
Silva,Laércio S.; Galindo,Izabel C. de L.; Gomes,Romário P.; Campos,Milton C. C.; Souza,Edivan R. de; Cunha,José M. da.
ABSTRACT Inadequate and intensive management of soils can promote changes in their chemical attributes and impair the quality of surface and groundwater, especially in hillside areas. Therefore, the aim of this study was to identify possible changes in soil and water chemical composition of hillside areas cultivated with horticulture. For this, chemical attributes of three soil depths (0-10, 10-30, and 30-60 cm) were determined in three hillside positions (upper, middle, and lower thirds) of five hillside and adjacent forest areas, as well as water from reservoirs for agricultural use and human consumption. Compared with the forest area, horticultural areas present soil with lower organic matter content and CEC, but higher values of pH, base saturation,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Landscape; Environmental contamination; Management practices; Irrigation water.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000300351
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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
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Como evitar perdas de água na irrigação de fruteiras. Infoteca-e
CONCEIÇÃO, M. A. F..
2014
Tipo: Artigo de divulgação na mídia (INFOTECA-E) Palavras-chave: Irrigacao; Recurso hidrico; Agua; Fruta; Fruticultura; Conservacao da agua; Irrigation; Water; Fruit; Water resources; Irrigation water; Water management; Horticulture; Water conservation.
Ano: 2014 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/987733
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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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Effect of changes in the institutional structure of irrigation water property rights on the willingness to pay of farmers for water: case of Tunisia AgEcon
Frija, Aymen; Chebil, Ali; Speelman, Stijn; Van Huylenbroeck, Guido.
This paper assesses the economic value of changes in the attributes of farmers’ irrigation water property rights in Tunisia. Changes on attributes generated by the transfer process of the property rights from the collective to the individual level in addition to changes in “constitutional” attributes were integrated into three scenarios. The valuation was conducted using the Contingent Valuation Method through the elicitation of individuals’ willingness to pay. Results show positive willingness to pay values for all scenarios. However, farmers of the studied region are shown willing to pay more for changes in the constitutional attributes. Furthermore their willingness to pay appears to be most affected by their perceptions concerning the organization and...
Tipo: Conference Paper or Presentation Palavras-chave: Property rights; Irrigation water; Contingent Valuation; Resource /Energy Economics and Policy.
Ano: 2008 URL: http://purl.umn.edu/44422
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Evaluation of historic, current and future water demand in the Olifants River Catchment, South Africa AgEcon
McCartney, Matthew P.; Arranz, Roberto.
Water resource development has played a significant role in the expansion of agriculture and industry in the Olifants River Catchment. However, currently water deficit is one of the major constraints hampering development in the catchment; both the mining and agricultural sectors are producing below optimal levels because of their reliance on insufficient supplies. In this study, the Water Evaluation and Planning (WEAP) model was used to evaluate scenarios of historic, current and future water demand in the catchment. For each scenario, the WEAP model was used to simulate demand in five different sectors (rural, urban, mining, commercial forestry and irrigation) over a 70-year period of varying rainfall and hydrology. Levels of assured supply were...
Tipo: Report Palavras-chave: River basins; Catchment areas; Water resources development; Water demand; Water allocation; Simulation models; Calibrations; Water use; Irrigation water; Domestic water; Ecology; South Africa; Olifants River Catchment; Agricultural and Food Policy; Community/Rural/Urban Development; Crop Production/Industries; Demand and Price Analysis; Environmental Economics and Policy; Farm Management; Labor and Human Capital; Land Economics/Use; Production Economics; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies.
Ano: 2007 URL: http://purl.umn.edu/61095
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Evaluation of historic, current and future water demand in the Olifants River Catchment, South Africa. AgEcon
McCartney, Matthew P.; Arranz, Roberto.
Tipo: Report Palavras-chave: River basins; Catchment areas; Water resources development; Water demand; Water allocation; Simulation models; Calibrations; Water use; Irrigation water; Domestic water; Ecology; South Africa; Olifants River Catchment; Agricultural and Food Policy; Community/Rural/Urban Development; Crop Production/Industries; Environmental Economics and Policy; Farm Management; Land Economics/Use; Resource /Energy Economics and Policy.
Ano: 2007 URL: http://purl.umn.edu/57026
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Fluxo de biomassa e estrutura do dossel em capim-braquiária manejado, sob lâminas de irrigação e idades de crescimento. Repositório Alice
LOPES, M. N.; POMPEU, R. C. F. F.; SILVA, R. G. da; REGADAS FILHO, J. G. L.; LACERDA, C. F. de; BEZERRA, M. A..
Resumo: Objetivou-se avaliar o fluxo de biomassa e a estrutura do dossel do capim-braquiária manejado sob cinco lâminas de irrigação (3,84; 4,39; 6,19; 8,62 e 10,46 mm dia-1) e quatro idades de crescimento, num delineamento inteiramente casualizado em arranjo de parcelas subdivididas, sendo as lâminas de irrigação, estudadas nas parcelas, e as idades de crescimento (10, 17, 24 e 31 dias), nas subparcelas, com quatro repetições. Constatou-se interação entre lâminas de irrigação x idades de crescimento para a altura do dossel. Verificou-se resposta quadrática com ponto de mínimo para a relação folha/colmo e eficiência de uso da água em função do avanço nas idades de crescimento. Constatou-se resposta linear crescente para a taxa de alongamento foliar e taxa...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Taxa de alongamento foliar; Fluxo de biomassa; Forragem verde; Gramínea forrageira; Brachiaria decumbens; Capim brachiaria; Forragem; Pastagem; Biomassa; Água; Irrigação; Crescimento; Feed crops; Biomass; Irrigation water; Green feed.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/999823
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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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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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Germinação e formação de mudas enxertadas de gravioleira sob estresse salino. Repositório Alice
NOBRE, R.G.; FERNANDES, P.D.; GHEYI, H.R.; SANTOS, F.J. de S.; BEZERRA, I.L.; GURGEL, M.T..
A expansão da fruticultura no Nordeste brasileiro pode sofrer limitações, já que algumas áreas com elevado potencial de cultivo são abastecidas por água de qualidade insatisfatória. Considerando a potencialidade de cultivo da gravioleira (Annona muricata L.) na região e o fato de não existir dados sobre a produção de mudas enxertadas dessa espécie, sob estresse salino, conduziu-se este trabalho com o objetivo de avaliar os efeitos da salinidade da água de irrigação sobre o tipo 'Crioula' tendo 'Morada' como porta-enxerto. A água de irrigação de condutividade elétrica entre 0,5 e 5,5 dS m-1 foi preparada mantendo-se proporção equivalente a 7:2:1, entre Na:Ca:Mg, respectivamente; o delineamento foi em blocos casualizados, com quatro repetições, 54 plantas...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Annona muricata; Salinidade; Condutividade elétrica; Água de irrigação; Salinity; Electrical conductivity; Irrigation water.
Ano: 2003 URL: http://www.alice.cnptia.embrapa.br/handle/doc/109682
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Groundwater markets and water use efficiency: The case of Karnataka AgEcon
Deepak, S.C.; Chandrakanth, Mysore G.; Nagaraj, N..
Research highlight based on a paper titled “Groundwater markets promoting efficiency in water use in agriculture in Karnataka.”
Tipo: Report Palavras-chave: Water market; Groundwater extraction; Water use efficiency; Wells; Crop production; Irrigation water; Domestic water; Pricing; Models; Policy; India; Karnataka; Demand and Price Analysis; Environmental Economics and Policy; Food Security and Poverty; Productivity Analysis.
Ano: 2005 URL: http://purl.umn.edu/53070
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Groundwater pollution and emerging environmental challenges of industrial effluent irrigation in Mettupalayam Taluk, Tamil Nadu AgEcon
Mukherjee, Sacchidananda; Nelliyat, Prakash.
Industrial disposal of effluents on land and the subsequent pollution of groundwater and soil of surrounding farmlands – is a relatively new area of research. The environmental and socioeconomic aspects of industrial effluent irrigation have not been studied as extensively as domestic sewage based irrigation practices, at least for a developing country like India. The disposal of effluents on land has become a regular practice for some industries. Industries located in Mettupalayam Taluk, Tamil Nadu, dispose their effluents on land, and the farmers of the adjacent farmlands have complained that their shallow open wells get polluted and also the salt content of the soil has started building up slowly. This study attempts to capture the environmental and...
Tipo: Working or Discussion Paper Palavras-chave: Groundwater; Water pollution; Income; Water quality; Irrigation water; Effluents; Wells; Drinking water; Domestic water; Households; Soil salinity; Crop management; Agricultural and Food Policy; Crop Production/Industries; Resource /Energy Economics and Policy.
Ano: 2007 URL: http://purl.umn.edu/91902
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Hygienic-sanitary conditions of vegetables and irrigation water from kitchen gardens in the municipality of Campinas, SP BJM
Simões,Marise; Pisani,Beatriz; Marques,Eneida Gonçalves Lemes; Prandi,Maria Angela Garnica; Martini,Maria Helena; Chiarini,Paulo Flávio Teixeira; Antunes,José Leopoldo Ferreira; Nogueira,Ana Paula.
We examined samples of irrigation water and vegetables from kitchen gardens in Campinas, Brazil. The bacterial analysis condemned 22.3% of the vegetable samples, and the parasitological examination condemned 14.5%. The criteria established by the Brazilian legislation condemned 11.8% of the irrigation water samples. Parasites were significantly more frequent in vegetables in the rainy season, while excessive fecal coliforms were more frequent in the dry season. A proper monitoring of the irrigation water supply is important to avoid the contamination of vegetables.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Vegetables; Irrigation water; Bacteria; Parasites.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822001000400015
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Hygienic-sanitary quality of vegetables and evaluation of treatments for the elimination of indigenous E. coli and E. coli O157:H7 from the surface of leaves of lettuce (Lactuca sativa L.) Ciênc. Tecnol. Aliment.
Santos,Ytana oliveira; Almeida,Rogeria Comastri de Castro; Guimarães,Alaise Gil; Almeida,Paulo Fernando.
The purpose of this study is to evaluate the hygienic-sanitary quality of vegetables and irrigation water and assess the effectiveness of lemon juice and vinegar in reducing E. coli strains inoculated on lettuce. One hundred and forty samples of vegetables and 45 samples of irrigation water were investigated for thermotolerant coliforms and Salmonella spp. In order to verify the effectiveness of natural household sanitizers in reducing E. coli in inoculated lettuce, four treatment solutions were tested: fresh lemon juice, alcohol vinegar, lemon juice-vinegar mixture, and lemon juice-vinegar-water mixture. The microbiological analysis revealed high rates of contamination by thermotolerant coliforms and identified the presence of E. coli in 32% of the tested...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Escherichia coli; Natural household sanitizers; Vegetables; Irrigation water.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612010000400038
Registros recuperados: 42
Primeira ... 123 ... Última
 

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