Cropping pattern; Irrigation systems; Positive mathematical programming; Sustainability; Water applied; Water management; Agriculture sectors; Complex dimensions; Environmental benefits; Objective functions; On-farm irrigation efficiency; Water pricing policies; Agronomy and Crop Science; Water Science and Technology; Soil Science; Earth-Surface Processes
Abstract :
[en] Water pricing and reducing the costs of the implementation and maintenance of irrigation systems have been a challenging topic for a long time. Water pricing issues combine two complex dimensions. The first dimension is the economy of the farm and its association with the broader economic system and farming practices. The second dimension is the hydrology and interconnection of the plot with the irrigation system, the river basin, and the underlying water policy framework. Accordingly, this study aimed to investigate how the institutionalization of water applied would affect water productivity through the implementation of a water-pricing policy. To this end, this study formulated a Positive Mathematical Programming (PMP) model with a gross margin maximizing objective function to assess the data collected from 213 farms in Hamadan-Bahar Plain, Iran. The results revealed that a water-pricing policy can change the cropping pattern and also irrigation system within the limitations of the case study. It can also be a driver to motivate farmers to use a modern and more efficient irrigation system. The potential environmental benefits from the improved on-farm irrigation efficiency depend on the government's ability to prevent the extension of the irrigated area. In absence of such controls, the aquifer depletion will be accelerated. Therefore, an appropriate water-pricing policy could improve water productivity and also reduce water applied.
Disciplines :
Agriculture & agronomy
Author, co-author :
Zamani, Omid; Thünen Institute of Market Analysis, Braunschweig, Germany ; Department of Agricultural Economics, Christian-Albrechts-University of Kiel, Germany
Azadi, Hossein ; Université de Liège - ULiège > TERRA Research Centre > Modélisation et développement ; Department of Geography, Ghent University, Belgium ; Research Group Climate Change and Security, Institute of Geography, University of Hamburg, Germany ; Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic
Mortazavi, Seyed Abolghasem; Department of Agricultural Economics, Tarbiat Modares University, Iran
Balali, Hamid; Department of Agricultural Economics, Bu-Ali Sina University, Iran
Moghaddam, Saghi Movahhed; Department of Agroecology, Environmental Sciences Research Institute, Shahid Beheshti University, Iran
Jurik, Lubos; Department of Water Resources and Environmental Engineering (WREE), Nitre Slovak University of Agriculture in Nitra, Slovakia
Language :
English
Title :
The impact of water-pricing policies on water productivity: Evidence of agriculture sector in Iran
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