Life in a biodynamical topsoil is 5 times as rich as in a soil fertilized with mineral fertilizers. Deeper down in the soil, the difference is even greater.
(Source: Kjellenberg, L.; Granstedt, A.; Pettersson, B.D. The connection between soil, crop and manure. Results from the K-trial, a 33-year study on the effect of fertilization on the properties of soil and crop; 2005. Nordisk Forskningsrings meddelande nr 36)