I'll let Professor Cassandra Collins speak for herself on this topic. Here's the link:
https://www.wineaustralia.com/news/articles/organic-and-biodynamic-wine-practice?utm_source=Wine+Australia+RD%26E+News&utm_campaign=ed62fdc0ba-RD_E_News_April_2019&utm_medium=email&utm_term=0_440931c1c7-ed62fdc0ba-210375317