Posted 6/25/2015 23:08 (#4646426 - in reply to #4645119) Subject: RE: Soil Amendment for Hard Clay?
oregon
I'd take a sample of the mushroom compost that has been mentioned. I know they use salt and gypsum in the mix (here at least) and my experience has been excessive sodium with very little N after you get it.
of course your oxidized soils are much different than here so maybe disregard
Soil Amendment for Hard Clay?
