On 7/7/2013 1:24 AM, Guv Bob wrote [in part]:
County agents only deal with commercial farms here. They charge a LOT
to test soil, so the home kits are the only practical way to do.


Yes, county agricultural agents deal with commercial agriculture. You
should have contacted your county agricultural extension. The latter
operates a master gardener program that advises and trains home
gardeners for free. See http://ucanr.edu/County_Offices/ to find the
extension office for your county.

--
David E. Ross
Climate: California Mediterranean, see
http://www.rossde.com/garden/climate.html
Gardening diary at http://www.rossde.com/garden/diary