Hydrologic–Economic Model for Managing Irrigation Intensity in Irrigation Areas under Watertable and Soil Salinity Targets |
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Authors: | S Khan N O’Connel T Rana E Xevi |
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Institution: | (1) CSIRO Land and Water – Griffith, PMB 3, Griffith, NSW, 2680, Australia;(2) Charles Sturt University, Locked Bag 588, Wagga Wagga, NSW, 2678, Australia;(3) Cooperative Research Centre for Irrigation Futures, Toowoomba, QLD, Australia |
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Abstract: | This paper gives mathematical details and sample applications of SWAGMAN Farm (SWAGMAN, Salt Water and Groundwater Management),
a farm-scale hydrologic economic model that integrates agronomic, climatic, irrigation, hydrogeological and economic aspects
of irrigated agriculture. The model is capable of determining optimum mix of land use to keep watertable and soil salinity
within acceptable limits while maximising the economic returns. Alternatively, the model can simulate water and salt balance
and economics of a given cropping preference. Web-based and Geographic Information Systems versions of the model are available
for integration with the environmental reporting systems of the irrigation areas. |
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Keywords: | model cropping salinity irrigation watertable leakage groundwater irrigated agriculture SWAGMAN GAMS |
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