well that might work, but I suggest you just use a compamy that does it for a living, tell them what you plan to plant and they will tell you exactly how much lime, fert you need based on what size plot you want
go to this link, and download a form, follow instructions and mail the smaple to them, its like 10 bucks, and you get a fast accurate result and info
all the big name seed companys I know of use the same dam lab too, but they all charge there won different fee's LOL
Bio logic has been the cheapest
Unless you know your local soil conservation dept office, and some will do them for free, but hard to beat 10 bucks in the mail a d a e mailed result or hard copied mailed back to you, gas to drive to the soil office will cost me more! even if the service is free!!
when you get your soil sample, try NOT to use a rusty shovel, so it doesn't alter the test results, and take a bunch of samples from all over the site, and mix very well ina VERY CLEAN bucket, then place in baggie and mail that out!
http://www.plantbiologic.com/t-soil.aspx
http://www.plantbiologic.com/images/...t/soiltest.pdf