MemberFebruary 18, 2021 at 11:48 am1001005077
Good responses here already.
I would add that there is also a likelihood your high K levels are limiting Ca absorption. I would suggest reducing or eliminating any K applications.
I would also suggest increasing soil boron to 3-4 ppm range. This is likely to give you much better Ca uptake.
You might also find these links useful: