Hayinhere - 9/9/2009 11:49 [I guess you're saying that a person should apply carbonate without calcium to lower PH. That sounds like really bad advice. Or maybe we could just give you the benefit of the doubt and assume you mean CALCIUM carbonate or something other than just plain carbonate. Calcium is a cation -- it is inherently acidic. Calcium cannot displace hydrogen from the cation-exchange sites on the soil matrix. This is precisely the reason that you cannot use gypsum (calcium sulfate) to raise soil pH. I have given no advice anywhere in this thread. | 
A soil sample result. Copy attached.
