salinity, and low exchangeable K concentrations are common constraints in many cracking clays. Recommendations for ameliorating sodicity include applying gypsum alone or in combination with deep tillage.

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

The National Program for Sustainable Irrigation provided funds to undertake an 8-week research study on-farm during the 2010-2011 summer.