O
OrganicOzarks
If you do a lab test with Logan Labs and send the result to these guys (www.kisorganics.com), they will send you back recommended rates of application and can help source anything that you may have trouble finding locally in small quantities (eg. zinc sulfate, copper sulfate, etc...). It's based on the latest book by Steve Solomon, "The Intelligent Gardener"
Shameless self promotion much?