Got my soil test back... the power of mulch!
My vegetable garden was a weedy patch of lawn in April. This weekend I dug up some samples in various places around my property to send them off for soil testing, including the garden.
3 months later, with nothing but vegetables and 10" of old straw for mulch (which is now about 2"), my soil has visibly approved in appearance, depth of color and tilth. The dirt directly adjacent to it is still clay, but the vegetable garden came back as light clay or loam.
I could use a little phosphorus, but that is easily corrected. And maybe a little lime to offset the recent pH drop.
This is probably the best native soil I've ever had -- no wonder the garden is gangbusters this year -- and I've scarcely started working on it! Of course, go over a foot down and you still start hitting rocks and hard clay, but give it time.
For the geeks:
Soil pH = 5.3 pH (was 5.9... drop probably due to increased organic matter in soil)
Phosphorus P = 30 lb/acre
Potassium K = 233 lb/acre
Magnesium Mg = 182 lb/acre
Calcium Ca = 1567 lb/acre
CEC = 4.6-9.0 cmolckg-1