More current event knowledge on Port Vintages last week from Greg B. Carlstrom, guildsomm user, Rachael Ryan and Xoel Cantero Alvarez.
This week: What is the Barossa Old Vine Charter? Is there any other systems like it in the world of wine?
This classification system was formalized in 2009. Up until then there was nothing in place to preserve and promote these unique areas. The vineyards are registered by age and each of the 4 levels holds significant attributes such as fruit quality, yield, dry farming, rootstock and viticultural tradition. I don't know that there are formal systems in these places but one of the world's oldest vines is NE Italy in South Tyrol planted to Versoaln where 350 year old vines are still producing wine in small amounts. Some of the oldest thought to be vines are also located in SW England and the area is called The Great Vine at Hampton Court Place and planted to Black Hamburg. I think they are protected sites but again not sure about a formal system.