[permaculture] Phosphorus sources without calcium
Stephen Sherman
spsherm at msn.com
Tue May 12 13:56:06 EDT 2009
I have been following the Albrecht's soil analysis methods in trying to
build my soil. This year the tests showed that my soil's calcium levels
were getting too high, however the soils still lacked phosphorus. That
created an unusual problem in that most natural sources of P contain
large amounts of calcium (rock phosphate, bone meal, etc).
Does anyone have any ideas about P sources that do not have calcium with
them?
TIA
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