I used to sub to Organic Gardening, too, and still have quite a few of their books. One tidbit I learned from their editor back in the 1990s was about using mushroom compost. Back then, he was able to buy one of those long dump-truck loads for $100. I looked online and most of the prices for the average person go for $25 per half yard! Quite a change. I guess as more people learned they could use that sterilized compost, the suppliers bumped up the prices, just a little too much in my opinion.
I don't know what your resources are for compost, but there was one tool I learned how to use, at least for driving a pair of mules in pulling it: a manure spreader. It was turn of the 19th century era, mind you, yet it still worked. I learned that on a former working farm for demonstrations (part of a nature center south of here.) Of course, it would take more than a handful of farm animals to make enough manure for a sizable operation. You'd probably have to buy that, too.
One thing I learned from the man that taught those skills was for the organic gardener and/or suburbanite (as in "lawn care"
to use sheep feed, or alfalfa pellets, as a form of organic "fertilizer". It adds all the nitrogen you need, plus it adds organic matter to the soil.
Do you happen to have a blog about your farming "adventures"? Because I'd like to read it, especially about whatever you have attempted with biodynamics. Oh, a couple more links, and I may bury you if you attempt to read it all! 
Rex Research - Agriculture
Rex Research - Water
Just pick out the topics that seem the most pertinent. I know some of them probably don't work, or aren't feasible, but there's some good ideas in there, too 
(edit - spailing airer)
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