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Economic Aspects of Some Groundwater Disposal Options for Irrigated Dairy Farms: A Preliminary Evaluation

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  • Gyles, Oliver

Abstract

Net annual costs for disposal by pumping to the Murray River, an on-farm evaporation basin, conjunctive use with surface water to irrigate dairy pasture, and undiluted irrigation of a salt tolerant grass were estimated and compared. Total conjunctive use (TCU) is the cheapest option below 10dS/m groundwater salinity. TCU becomes more expensive than river disposal above 10 dS/m and than total evaporation above 15 dS/m. Above 10 dS/m, partial conjunctive use with disposal of some groundwater by irrigating salt tolerant forage is similar in cost to river disposal and less expensive than total on-farm evaporation. Farm and regional perspectives for optimising sustainable salt management are discussed.

Suggested Citation

  • Gyles, Oliver, 2001. "Economic Aspects of Some Groundwater Disposal Options for Irrigated Dairy Farms: A Preliminary Evaluation," 2001 Conference (45th), January 23-25, 2001, Adelaide, Australia 125646, Australian Agricultural and Resource Economics Society.
    • Handle: RePEc:ags:aare01:125646
    DOI: 10.22004/ag.econ.125646
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    1. Gyles, Oliver & Montecillo, Olive P., 1999. "Linear Programming and Future Landuse Scenarios: An Irrigated Catchment Case Study," 1999 Conference (43th), January 20-22, 1999, Christchurch, New Zealand 123809, Australian Agricultural and Resource Economics Society.
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