[NAFEX] gypsum / organinc cert.
northernlights2n at yahoo.com
Sun Apr 17 08:39:34 EDT 2005
Thanks for the commentaries: regarding stuff breaking up and blowing around - the two
4'x4' test pieces I laid 3 years ago have simply dissolved into the soil, and they did
an admirable job for a couple years of smothering weeds next to the trees ( the other
short term use for sheetrock) which of course a powder wouldn't do. I appreciate the
heads up on organic certifying agency objections. Which leads to a question: I'll be
growing 'organic' - whether I am certified or not, a personal bent of mine. From the
restrictions I have seen I think I'll be certified crazy if I do get 'certified'! But I
figure I might as well reap the extra $ per pound if indeed I already deserve the
classification. Since this is not a forum for organic growers can someone recommend an
online forum for such discussions? thanks, Del
> > A fellow orchardist uses sheetrock (gypsum board ) to both add gypsum
> > and smother sod and
> > kill weeds around new trees. > > Del
> If you are contemplating getting certified, before applying ANYTHING
> check with the agency you intend to certify with.
> I just took a fast look at my 2004 print version of the OMRI (organic
> materials review institute) generic list. It says: "Gypsum - mined
> source: Nonsynthertic, Calcium sulfate; only mined forms are
> acceptable. See Gypsum By-products and Mined Minerals - Unprocessed."
> The next item says: "Gypsum By-Products: Synthetic. Gypsum produced as
> a by-product of superphosphate manufacture . . . from precipitation of
> sulfur-dioxide gas with limestone, or from dry-wall rejects is
> So it sounds to me like you'd better not use it. But you could check
> with a certifying agency to be sure.
> Finger Lakes NY; zone 5 mostly> _______________________________________________
> nafex mailing list
> nafex at lists.ibiblio.org
> **YOU MUST BE SUBSCRIBED TO POST!**
> All other messages are discarded.
> No exceptions.
> To subscribe or unsubscribe, go to the bottom of this page (also can be used to change
> other email options):
> File attachments are NOT stripped by this list
> TAKE STEPS TO PROTECT YOURSELF FROM COMPUTER VIRUSES!
> Please do not send binary files.
> Use plain text ONLY in emails!
> Message archives are here:
> NAFEX web site: http://www.nafex.org/
Del Stubbs http://www.pinewoodforge.com zone 3 N. MN
Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around
More information about the nafex