Latest ABARE forecast (12th Sept) for this year's winter crop: http://data.daff.gov.au/data/warehouse/aucrpd9abcc003/aucrpd9aba_20170912_yGQh0/AustCropRrt20170912_v1.0.0.pdf
"In 2017–18 total winter crop production in Victoria is forecast to fall by 34 per cent to 6.8 million tonnes, driven by expected falls in yields from the record highs set in 2016–17. This forecast production is 28 per cent above the 10-year average to 2015–16. Planted area is estimated to have remained largely unchanged.
Wheat production in 2017–18 is forecast to decrease by 33 per cent to 3.5 million tonnes. The average yield forecast to fall by 33 per cent to an above average 2.3 tonnes a hectare.
In 2017–18 barley production is forecast to fall by 38 per cent to 2.0 million tonnes, as a result of a forecast 35 per cent fall in the average yield. Planted area is estimated to have decreased by 4 per cent to 900,000 hectares, reflecting unfavourable expected returns compared with canola and pulses."