If it's any help, I did pay a fee to growabundant.com to use their Organicalc spreadsheet and get access to info for one year. Being new to the whole soil thing, I thought it would help confirm what I had worked out on paper, which it did. You fill out the Organicalc spreadsheet with your soil lab test results and it spits out a report with recommended soil amendments based on all of the lab info. I did get an email with personalized recommendations from Erica Reinheimer who helped write the book. Since I've subscribed for one year, I'll do another soil test in the fall and use the spreadsheet for a second time - basically $4.50 each for help on two soil tests.
