'...Major leaps in the productivity of agricultural systems rarely arise from interventions related to single factors, but rather from synergistic interactions among many interventions working together...'

Source: Watt M, Kirkegaard JA, Passioura JB (2006) Australian Journal of Soil Research 44, 299-317.

Total land use for agriculture in Australia is around 440 million hectares, of which 90% is extensively grazed, about 26 million hectares sown to grass and legume pasture, and 22 million hectares used for cropping.

More than half of the cropping in Australia occurs in two states - Western Australia (33% of total) and New South Wales (28%) (ABARES 2011).