What a wonderful discussion, not because I have used identifiable biodynamic preparations, but because, as Redhawk shared, I too am connected to our blessed mother Sophia-Gaia deeply and as I tend the garden, I can feel her energy. It has been scientifically measured that the earth emits negative ions, and when we connect with bare feet and hands to the ground, it balances the body, which spends far too much time separated from these ions--think rubber soled shoes.
As a student of biology, it also strikes me when folks "discover" that getting dirty improves the immune system. In fact there is even a healing method that involves eating earth. Getting our hands in the dirt and in contact with the earth's biome also improves mood. Without micro organisms we couldn't digest most foods!
I also love to tinker in the compost. I create brews from food scraps, coffee filters, dynamic accumulators and compost activators and put them into the big compost pile and dang it spikes the process. Not only that. It spikes the insect activity, which spikes the bird activity. In fact, the other day, I couldn't dig in the pile because a family of wrens was indignant that I would disturb their dinner of crawlies with a compost run!
One thing, being on a plot with 20 mature oaks-very old and over 100 feet tall each, I am very interested in the mychorizha relationship. I had one tree that was struggling and so I bedded its base with oak leaf mulch and sprinkled on some sterile soil that was innoculated with these fungal colonies. It took a few months to establish, but now the tree is thriving! Other trees already have the perfect balance as there are wild flowers like wintergreen and ghost pipe that will ONLY grow where the tree roots are that have the perfect fungal conditions. You can't even transplant these wild flowers or grow them from seed. They will only sprout in exactly the perfect place....and that is such a joy...and a sign that all is in balance in my space of love!
I am considering a round of compost tea to spray in my side yard that I am reclaiming after Hurricane Sandy damage--but I must first rid it of invasives and poison ivy--slow process, but on it goes...