It looks like your membership has expired, Anonymous
The section on Mudgee GI includes the following text: ‘Cabernet Sauvignon and Merlot are the region’s most planted varieties, and red grapes outnumber white grapes by four to one.’ I, for one, would be curious to know the source for that claim. James Halliday’s Wine Atlas of Australia 2014 Edition has Shiraz as the most-planted grape variety based on 2012 data. And it’s odd that Wine Australia’s site does not include Shiraz as one of the ‘Top Varieties Grown in Mudgee’, yet Wine Australia’s 2021 Vintage Report (available here) indicates that Shiraz had more tons produced than any other grape variety in the Mudgee GI. Furthermore, Wine Australia’s VinSites project states that area-by-grape-variety data have not been collected since 2015, which makes me wonder when the data were collected and where they were reported . . .
Hi Keith, the data likely came from Wine Australia, but I can't be sure which report. I've softened the language above and included Shiraz. While tonnage and acreage %s can be wildly different, it's difficult to imagine that Shiraz is not among the most highly planted based on the 2020 data. However, it's worth keeping in mind that 2020 was a not a typical vintage there, and it's difficult to know the role that drought and fires/smoke may have played on the yields.
Taking a look at Mudgee's regional site, it looks like they may be trying to deemphasize Shiraz and Cabernet in the future, so perhaps this is why Shiraz does not appear on Mudgee's page on Wine Australia's site.
At every turn, things only get more fascinating. Thanks for the additional background, Jennifer, very helpful to know!