I've read the posts on soil testing, and I realize it's cheap and widely available through local universities, etc.
Question: Is it possible to do my own soil testing? Are there some compounds that it's very difficult to test for without a big fancy lab like at the university? Can the same chemistry be used to test for compounds in things like compost, manure, etc?
In other words, if I invest in a little chemistry lab and follow instructions, can I test any mulch, compost, whatever that comes my way for chemical quantities, and make use of those numbers in deciding how to mix them and how long to let it age?