Lawrence F. London, Jr.
london at sunsite.unc.edu
Sat Apr 25 22:50:29 EDT 1998
london at sunSITE.unc.edu llondon at bellsouth.net
On Sat, 25 Apr 1998, Permaculture West wrote:
> Does anyone have a good reference that shows all the mineral amendments
> (gypsum, lignite, rock phosphate, kelp, etc.) and what quantities should be
> spread over what surface area?
See Eliot Coleman's book, "The New Organic Grower" for starters.
& ask Steve Diver at ATTRA about this ...
A few readily available mineral amendments are:
glauconite or New Jersey Greensand (very high potash and trace minerals)
colloidal phosphate (less P than R.P. but releases quicker)
dolomitic limestone (calcium & magnesium)
high calcium limestone
ground shell meal (high calcium)
pyrophyllite (tailings have good trace minerals and some potash, are a
mixed aggregate containing sand-sized particles down to powder from
the small amounts of talcum - this is an amazing product: good
to excellent mineral amendment for soils, excellent to fantastic
soil texturizer, increases soil tilth rapidly; is an unbelievable
potting soil for seedlings or nursery stock for starting and growing
out - the root systems of plants that develop rapidly in this medium
are almost unbelievable ...
rock dusts of various compositions from rock quarries
granite, basalt, feldspar, etc.; that found in the settling ponds
(used to purify the wash water used to clean the crushed rock)
is of _extremely_ fine grit & is almost like silt & will break
down and release minerals into garden soil sooner
hybrid granite dust, very high in potash and trace minerals
(Ex.: Hybro-Tite, from Hybro-Tite Corp. in Lithonia, Ga., near Stone
- There are many other fine products out there - look around.
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