Simulation ot the effects of water pricing scenarios on smallholder irrigators in South-Africa

Speelman Stijn, D'Haese Marijke, Buysse Jeroen, Frija Aymen, Farolfi Stefano, D'Haese Luc. 2008. Simulation ot the effects of water pricing scenarios on smallholder irrigators in South-Africa. In : Proceedings of the Second IASTED Africa Conference Water Resource Managment (Africa WRM 2008), September 8-10, 2008, Gaborone, Botswana. IASTED. s.l. : s.n., 7-12. IASTED Africa Conference Water Resource Management (Africa WRM 2008). 2, Gaborone, Botswana, 8 Septembre 2008/10 Septembre 2008.

Résumé : The growing water scarcity worldwide puts pressure on irrigation systems as main consumptive user to improve performance. In developing countries, where today agricultural water use is often still heavily subsidised, a tendency exists of introducing water pricing policies to stimulate rational water use. The exact impact of water pricing policies in terms of water saving or its effect on the farmers¿ production systems remains unknown. This study introduces a new two-stage method that allows estimating at farm level the effects on the agricultural production process and water demand of introducing or raising a water price. In the first stage the technical efficiency frontier is constructed and the technical and allocative efficiency levels of each farm are calculated. This representation of the technology is used in the second stage in a profit maximization model. Applying the method to small-scale irrigators in South Africa, it is shown that water demand of farmers is quite responsive even to small changes in the water price. Furthermore, introduction of a water price is found to significantly decrease farm profit, which is particularly problematic for poor farmers.

Mots-clés géographiques Agrovoc : Afrique du Sud

Classification Agris : P10 - Ressources en eau et leur gestion
U10 - Informatique, mathématiques et statistiques

Auteurs et affiliations

• Speelman Stijn, Ghent University (BEL)
• D'Haese Marijke, Ghent University (BEL)
• Buysse Jeroen, Ghent University (BEL)
• Frija Aymen, Ghent University (BEL)
• Farolfi Stefano, CIRAD-ES-UMR G-EAU (ZAF) ORCID: 0000-0003-4712-2497
• D'Haese Luc, Ghent University (BEL)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/546434/)

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