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Old 23-08-2007, 03:52 PM posted to rec.gardens
Eigenvector Eigenvector is offline
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First recorded activity by GardenBanter: Oct 2006
Posts: 125
Default Joint compound as fertilizer/conditioner


"cat daddy" wrote in message
...

"Eigenvector" wrote in message
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Any reason why joint compound can't be worked into the soil to add in
nutrients, like calcium, or as a way to control the ph of the soil? I

have
about 3 lbs of the stuff from a previous drywall project and didn't want

to
toss it out, when I could toss it on the compost pile or toss it in the

dirt
to break down.


http://en.wikipedia.org/wiki/Joint_compound

"The compound is a complex combination of water, limestone, expanded
perlite, ethylene-vinyl acetate polymer and attapulgite."

http://en.wikipedia.org/wiki/Ethylene-vinyl_acetate
"EVA is one of the materials popularly known as 'expanded rubber' or
'foam rubber'."

http://en.wikipedia.org/wiki/Attapulgite
"It is one of the types of fuller's earth."
"Until 2003, it was the active ingredient used in Kaopectate,"



I appreciate the links, I actually already knew what it was made from, but
it was how those ingredients interacted with plants that I was unsure of.

Really the EVA is the only thing that concerns me, but I wouldn't expect it
to be a large amount of the joint compound. Perlite is another potential
problem, don't have any real knowledge of that stuff and what its good for.