I have one: dolomite vs gypsum+epsom_salt
(The epsom salt supplies magnesium to the one
that gets gypsum.)
The question is whether either plant gets BER.
(Did the dolomite break down sufficiently over
the course of the season to supply enough calcium
to prevent BER?) You would have to fertilize both
with a fertilizer that contains no calcium to take
that out as a variable. I assume that the potting mix
has negligible amounts of it.
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