Key Findings for NPSI Project CIF5121: 1. Ensuring rainfall flushes salt is the key to sustaining supplementary irrigation with saline groundwater 2.

Over the last decade, grape growers in SE South Australia have had their water entitlements converted to volumetric allocations, experienced a reduction in annual rainfall and seen a rise in the salinity of groundwate

This publication explores ongoing perennial horticultural production using supplementary irrigation with saline groundwater.

As a result of improved irrigation management and systems, growers in the Lower Murray (Riverland-Sunraysia) horticultural region have improved their water use efficiency (WUE) over the past two decades from about 50%

The project was developed to test the hypothesis: a depressed leaching efficiency (LE) in the Lower Murray irrigation districts raises the root zone salinity and, improved water use efficiency (WUE) has an upper limit