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A new methodology for assessing the impact of water-pricing scenarios: case study of small-scale irrigation schemes in South Africa AgEcon
Speelman, Stijn; Frija, Aymen; Farolfi, Stefano; Buysse, Jeroen; D'Haese, Marijke F.C.; D'Haese, Luc.
Worldwide growing water scarcity has increased the call for economic instruments to stimulate rational water use in agriculture. In addition cost-recovery is now widely accepted as a cornerstone of sustainable water management. As a consequence now in developing countries, where currently agricultural water use is often still heavily subsidized, a tendency exists of introducing water-pricing as a policy to achieve more sustainable water use. The exact impact of water pricing policies on irrigation water use or on the farmers’ production system is however mostly unknown. A new two-stage methodology that allows estimating at the farm level the effects of introducing or raising a water price on the agricultural production process and water demand is...
Tipo: Conference Paper or Presentation Palavras-chave: Water-pricing; Water savings; Irrigation; Data envelopment analysis; South Africa; Resource /Energy Economics and Policy.
Ano: 2008 URL: http://purl.umn.edu/43836
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Evaluation of the SIRMOD model for optimum furrow irrigation performance CIGR Journal
Alejo, Lanie Alejandro.
This study aimed to evaluate and optimize the irrigation performance of a furrow irrigation system in the Philippines using the Surface Irrigation Simulation, Evaluation and Design (SIRMOD) model. Observed infiltration using a double ring infiltrometer and water advance from actual irrigation experiments conducted on a cornfield was used to calibrate and validate the SIRMOD model in a silty clay loam soil. Simulations showed that with appropriate cutoff time of irrigation and inflow rates, water savings from 29% to 49% depending on furrow length can be realized. This study revealed that infiltration characteristics derived from infiltration data using double ring infiltrometer tests would suffice as input to the SIRMOD model to estimate advance time of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Irrigation infiltration characteristics; Water savings.
Ano: 2020 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5675
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Response of a clingstone peach cultivar to regulated deficit irrigation Scientia Agricola
Sotiropoulos,Thomas; Kalfountzos,Dimitrios; Aleksiou,Ioannis; Kotsopoulos,Spyros; Koutinas,Nikolaos.
Regulated deficit irrigation (RDI) involves inducing water stress during specific fruit growth phases by irrigating at less than full evapotranspiration. The objectives of this research were to study the effects of RDI perfomed at stage II of fruit growth and postharvest, on productivity of clingstone peaches, fruit quality as well as photosynthetic rate and midday leaf water potential. The research was conducted in a commercial clingstone peach (Prunus persica L. Batch cv. A-37) orchard in Greece. Trees were irrigated by means of microsprinklers and their frequency was determined using local meteorological station data and the FAO 56 Pennman-Monteith method. Photosynthetic rate was measured by a portable infrared gas analyzer. Midday leaf water potential...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fruit drop; Leaf water potential; Photosynthetic rate; Water savings.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000200006
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Water Conservation and Residential Landscapes: Household Preferences, Household Choices AgEcon
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
Registros recuperados: 4
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