Posted 3/8/2019 17:35 (#7367942 - in reply to #7367927) Subject: RE: How much gypsum do I need to lower this 40% BS MG soil?
NW IL
In a lighter tillage situation it will take 5 tons of gypsum to lower your 40% mg to 20%. In a deep tillage situation it will take around 7.5 tons of gypsum to lower your Mg to 20%.
However your Ca May not currently be high enough to make it work. The numbers you gave us indicate that your Ca may only be at 47% right now