IMPROVING WATER USE EFFICIENCY BY REDUCING GROUNDWATER RECHARGE UNDER IRRIGATED PASTURES Final Report December 2001 Hayden Kingston, Matthew Bethune, Jahangir Alam Improving Water Use Efficiency by Reducing Groundwater Recharge under Irrigated Pastures FINAL REPORT Project DAN 11 December 2001 Hayden Kingston NSW Agriculture, Finley Matthew Bethune Institute of Sustainable Irrigated Agriculture, Tatura Jahangir Alam Formerly NSW Agriculture, Deniliquin This report summarises work conducted between July 1997 and December 2001. This project was funded by, Land and Water Australia, the Dairy Research and Development Corporation (DRDC) through the Murray Dairy Regional Development Program, Murray Community Land and Water Management Plans, NSW Agriculture and the Victorian Department of Natural Resources and Environment. For more information contact Hayden Kingston Matthew Bethune NSW Agriculture Institute of Sustainable Irrigated Agriculture, DNRE 241 Murray Street Private Bag 1, Ferguson Road Finley, NSW, 2713 Tatura, Vic, 3616 Phone 03 5883 1644 Phone 03 5833 5222 Fax 03 5883 1570 Fax 03 5833 5299 Email
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[email protected] Executive summary The project, ‘Improving Water Use Efficiency by Reducing Groundwater Recharge Under Irrigated Pastures’ (DAN11), was established to quantify recharge under well-managed flood irrigated pasture. A range of approaches, from field based experimental programs to lysimeters, was used to quantify recharge under flood irrigated pasture. The project focussed on the Berriquin and Shepparton irrigation areas. Recharge was estimated to be less than 0.2 ML/ha/y on most of the soils examined. The results indicate that recharge on the lighter soils was higher in 1996 than during 1998, 1999 or 2000 on the lighter soils in the Berriquin and Wakool areas.