[Terrapreta] USDA organic certification standards

[rukurt at westnet.com.au]

Douglas Clayton wrote:
> Greensand supplies marine potash, silica, iron oxide, magnesia, lime, 
> phosphoric acid and 22 trace minerals.  I've used it every year for 
> the past 27.    'tis not the same thing as "geen sand".
>
> http://www.state.ar.us/agc/greensan1.htm
> Doug
>
Well, there you are. These discussions are a good thing, we all learn 
something. Also shows the care that is needed with Google.

Thanks,


Kurt