Posted 2/13/2020 18:20 (#8039690 - in reply to #8039299) Subject: RE: K2O test
Nova Scotia
Blroberts - 2/13/2020 16:35
some clay minerals trap the K+ between the clay layers. It didn't go away but it is no longer exchangeable and thus not extracted by the solution in the lab.
Can you get the clay minerals to grab onto something else instead of the K+?