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פותח על ידי קלירמאש פתרונות בע"מ -
A coupled agronomic-economic model to consider allocation of brackish irrigation water
Year:
2013
Source of publication :
Water Resources Research
Authors :
בן-גל, אלון
;
.
Volume :
49
Co-Authors:
Ben-Gal, A., Department of Environmental Physics and Irrigation, Agricultural Research Organization, Gilat Research Center, Mobile Post Negev II, 85280, Israel
Weikard, H.-P., Environmental Economics and Natural Resources Group, Wageningen University, Wageningen, Netherlands
Shah, S.H.H., Environmental Sciences Group, Wageningen University, Wageningen, Netherlands
Van Der Zee, S.E.A.T.M., Environmental Sciences Group, Wageningen University, Wageningen, Netherlands
Facilitators :
From page:
2861
To page:
2871
(
Total pages:
11
)
Abstract:
In arid and semiarid regions, irrigation water is scarce and often contains high concentrations of salts. To reduce negative effects on crop yields, the irrigated amounts must include water for leaching and therefore exceed evapotranspiration. The leachate (drainage) water returns to water sources such as rivers or groundwater aquifers and increases their level of salinity and the leaching requirement for irrigation water of any sequential user. We develop a conceptual sequential (upstream-downstream) model of irrigation that predicts crop yields and water consumption and tracks the water flow and level of salinity along a river dependent on irrigation management decisions. The model incorporates an agro-physical model of plant response to environmental conditions including feedbacks. For a system with limited water resources, the model examines the impacts of water scarcity, salinity and technically inefficient application on yields for specific crop, soil, and climate conditions. Moving beyond the formulation of a conceptual frame, we apply the model to the irrigation of Capsicum annum on Arava Sandy Loam soil. We show for this case how water application could be distributed between upstream and downstream plots or farms. We identify those situations where it is beneficial to trade water from upstream to downstream farms (assuming that the upstream farm holds the water rights). We find that water trade will improve efficiency except when loss levels are low. We compute the marginal value of water, i.e., the price water would command on a market, for different levels of water scarcity, salinity and levels of water loss. © 2013. American Geophysical Union. All Rights Reserved.
Note:
Related Files :
Agronomy
aquifers
drainage water
Economic Analysis
evapotranspiration
hydrogeology
irrigation
Soils
Water pricing
עוד תגיות
תוכן קשור
More details
DOI :
10.1002/wrcr.20258
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
20281
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:35
Scientific Publication
A coupled agronomic-economic model to consider allocation of brackish irrigation water
49
Ben-Gal, A., Department of Environmental Physics and Irrigation, Agricultural Research Organization, Gilat Research Center, Mobile Post Negev II, 85280, Israel
Weikard, H.-P., Environmental Economics and Natural Resources Group, Wageningen University, Wageningen, Netherlands
Shah, S.H.H., Environmental Sciences Group, Wageningen University, Wageningen, Netherlands
Van Der Zee, S.E.A.T.M., Environmental Sciences Group, Wageningen University, Wageningen, Netherlands
A coupled agronomic-economic model to consider allocation of brackish irrigation water
In arid and semiarid regions, irrigation water is scarce and often contains high concentrations of salts. To reduce negative effects on crop yields, the irrigated amounts must include water for leaching and therefore exceed evapotranspiration. The leachate (drainage) water returns to water sources such as rivers or groundwater aquifers and increases their level of salinity and the leaching requirement for irrigation water of any sequential user. We develop a conceptual sequential (upstream-downstream) model of irrigation that predicts crop yields and water consumption and tracks the water flow and level of salinity along a river dependent on irrigation management decisions. The model incorporates an agro-physical model of plant response to environmental conditions including feedbacks. For a system with limited water resources, the model examines the impacts of water scarcity, salinity and technically inefficient application on yields for specific crop, soil, and climate conditions. Moving beyond the formulation of a conceptual frame, we apply the model to the irrigation of Capsicum annum on Arava Sandy Loam soil. We show for this case how water application could be distributed between upstream and downstream plots or farms. We identify those situations where it is beneficial to trade water from upstream to downstream farms (assuming that the upstream farm holds the water rights). We find that water trade will improve efficiency except when loss levels are low. We compute the marginal value of water, i.e., the price water would command on a market, for different levels of water scarcity, salinity and levels of water loss. © 2013. American Geophysical Union. All Rights Reserved.
Scientific Publication
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