The
effects of climate change are likely to exacerbate high natural climatic
variability on broadacre crop production systems in semiarid
environments in Australia (Hayman et al., 2012; IPCC, 2007).
The intensive rainfed farming systems of WSA are climatically sensitive,
as demonstrated by the significant fluctuations in regional
crop yields in dry and wet years (ABARES, 2013; Hennessy et al.,
2007). Such yield variation could be amplified by projected climate
changes