Volume 13, Issue 3 (2024)
QJIA 2024, 13(3): 49-65 |
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hosseini S M, Keramatzadeh A, Eshraghi F, Enayat M. Estimating the Economic Value of Irrigation Water in Rice Production in Golestan Province. QJIA 2024; 13 (3) :49-65
URL: http://journal.sbkiran.ir/article-1-281-en.html
URL: http://journal.sbkiran.ir/article-1-281-en.html
Gorgan University of Agricultural Sciences and Natural Resources
Abstract: (180 Views)
Water is one of the most valuable common natural resources, which, as a primary input in the production of agricultural products, holds a special place in the sustainable development of the agricultural sector and the economic development of other sectors. Increasing population, changing living standards, and recurring droughts are among the factors that have led to an imbalance between the supply and demand for water. Creating a balance between supply and demand requires proper and integrated management. Pricing water is one of the most important economic tools for managing the increasing demand for water in the agricultural sector. In this regard, the aim of this study is to determine the economic value of water in rice (paddy) production in Golestan province using a production function approach. The necessary data was obtained through the completion of 168 questionnaires from rice farmers in the province during the agricultural year 2022-2023. Based on the results, the Cobb-Douglas production function was chosen as the superior production function, with the partial production elasticity concerning water input estimated at 0.73, the marginal product of irrigation water at 0.51 kg, and the economic value of water estimated at 153 thousand rials per cubic meter. Considering the results, the price paid by farmers for water is approximately 4.33% of the economic value of water. Therefore, it is recommended that in order to ensure the sustainability of water resources and improve the sustainability of the agricultural production system, water pricing should be gradually increased based on the economic value of water, thereby facilitating the proper use of water and conservation of this input.
Keywords: Cobb-Douglas function, Irrigation water, Production elasticity, Production function, Value Marginal product
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