In article ,
Jan Flora wrote:

In article
,
Billy Rose wrote:

In article ,
"David E. Ross" wrote:

Billy Rose wrote:
In article ,
"David E. Ross" wrote:

George.com wrote:

[...]

Look mate, we are talking fertilizer. We are talking PO4 -3 (phosphate,
not phosphorous which our military is keen on firing into highly
populated areas like Fallujah, which is a war crime because it kills
indiscriminately when it explodes into fire on contact with air. Do not
add phosphorous to your garden. ) Think, Rock Phosphate, Bone Meal,
Single Super Phosphate, or Triple Super Phosphate.

- Billy
Coloribus gustibus non disputatum (mostly)

Okay, here's an oddball question for you: can I use di-calcium phosphate
in the garden? I have a bunch of it, but the horse that I bought it
for (as a feed supplement) died. (He was in his 30's.)

I tried looking it up and couldn't find anything.

I'm using codfish bonemeal right now. Stinky stuff, but the organic
diva next door swears by it.

TIA,

Jan


"Civilization is the interval between Ice Ages." -- Will Durant.

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

Dicalcium phosphate, also known as calcium monohydrogen phosphate, is a
dibasic, calcium phosphate.It is usually found as the dihydrate, with
the chemical formula of CaHPO4 € 2H2O, but it can be thermally converted
to the anhydrous form. It is practically insoluble in water, with a
solubility of 0.02 g per 100 ml at 25°C. It contains about 23 percent
calcium (dihydrate form), and is mainly used as a dietary supplement in
prepared breakfast cereals, enriched flour, and noodle products, and as
a tableting agent ( filler).

http://www.springerlink.com/content/t33v55v1h45n0814/

G. J. Racz1 and R. J. Soper1
(1) Department of Soil Science, University of Manitoba, Winnipeg,
Manitoba

Received: 9 July 1968
Summary The solubility of phosphorus was found to approximate that of
dicalcium phosphate dihydrate and/or dimagnesium phosphate trihydrate
when KH2-PO4, H3PO4 and K2HPO4 were added to four Manitoba soils. Eighty
to one hundred, seventy to ninety and sixty to eighty per cent of the
phosphorus added remained in solution when H3PO4, KH2PO4 and K2HPO4 were
added, respectively. The solubility of the added phosphorus was high in
all samples and relatively soluble compounds, dicalcium phosphate
dihydrate and dimagnesium phosphate trihydrate, were most likely formed
in the samples indicating that phosphorus added to these soils would be
readily available to plants.
Associate Professor and Professor respectively.

The short answer is yes.

I want to look at the disassociation constants but from the two articles
above, I don't see a problem.

- Bill
Coloribus gustibus non disputatum (mostly)