>>5676900 (lb)
Biodynamics is a method of agriculture, far beyond "organic".
It's popular in wine because it works best with perennial crops like grapes.
The fertilizers are (more than) a bit wacky - composts made with cow horns filled with fermented manure, etc.
It's out there stuff - very "new agey" - but AFAIK, nothing nefarious (not an expert tho).
Won't defend it at all, but have learned a lot about soil through studying it a bit.
Another thing - it was invented by Rudolf Steiner, founder of Waldorf Education & Theosophy which is a giant can of worms.